diff options
Diffstat (limited to 'MdeModulePkg/Bus/Pci/NonDiscoverablePciDeviceDxe/NonDiscoverablePciDeviceIo.c')
| -rw-r--r-- | MdeModulePkg/Bus/Pci/NonDiscoverablePciDeviceDxe/NonDiscoverablePciDeviceIo.c | 1502 |
1 files changed, 0 insertions, 1502 deletions
diff --git a/MdeModulePkg/Bus/Pci/NonDiscoverablePciDeviceDxe/NonDiscoverablePciDeviceIo.c b/MdeModulePkg/Bus/Pci/NonDiscoverablePciDeviceDxe/NonDiscoverablePciDeviceIo.c deleted file mode 100644 index c836ad6a91..0000000000 --- a/MdeModulePkg/Bus/Pci/NonDiscoverablePciDeviceDxe/NonDiscoverablePciDeviceIo.c +++ /dev/null @@ -1,1502 +0,0 @@ -/** @file
-
- Copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>
- Copyright (c) 2016, Linaro, Ltd. 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 "NonDiscoverablePciDeviceIo.h"
-
-#include <Library/DxeServicesTableLib.h>
-
-#include <IndustryStandard/Acpi.h>
-
-#include <Protocol/PciRootBridgeIo.h>
-
-typedef struct {
- EFI_PHYSICAL_ADDRESS AllocAddress;
- VOID *HostAddress;
- EFI_PCI_IO_PROTOCOL_OPERATION Operation;
- UINTN NumberOfBytes;
-} NON_DISCOVERABLE_PCI_DEVICE_MAP_INFO;
-
-/**
- Get the resource associated with BAR number 'BarIndex'.
-
- @param Dev Point to the NON_DISCOVERABLE_PCI_DEVICE instance.
- @param BarIndex The BAR index of the standard PCI Configuration header to use as the
- base address for the memory operation to perform.
- @param Descriptor Points to the address space descriptor
-**/
-STATIC
-EFI_STATUS
-GetBarResource (
- IN NON_DISCOVERABLE_PCI_DEVICE *Dev,
- IN UINT8 BarIndex,
- OUT EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR **Descriptor
- )
-{
- EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR *Desc;
-
- if (BarIndex < Dev->BarOffset) {
- return EFI_NOT_FOUND;
- }
-
- BarIndex -= (UINT8)Dev->BarOffset;
-
- for (Desc = Dev->Device->Resources;
- Desc->Desc != ACPI_END_TAG_DESCRIPTOR;
- Desc = (VOID *)((UINT8 *)Desc + Desc->Len + 3)) {
-
- if (BarIndex == 0) {
- *Descriptor = Desc;
- return EFI_SUCCESS;
- }
-
- BarIndex -= 1;
- }
- return EFI_NOT_FOUND;
-}
-
-/**
- Reads from the memory space of a PCI controller. Returns either when the polling exit criteria is
- satisfied or after a defined duration.
-
- @param This A pointer to the EFI_PCI_IO_PROTOCOL instance.
- @param Width Signifies the width of the memory or I/O operations.
- @param BarIndex The BAR index of the standard PCI Configuration header to use as the
- base address for the memory operation to perform.
- @param Offset The offset within the selected BAR to start the memory operation.
- @param Mask Mask used for the polling criteria.
- @param Value The comparison value used for the polling exit criteria.
- @param Delay The number of 100 ns units to poll.
- @param Result Pointer to the last value read from the memory location.
-
-**/
-STATIC
-EFI_STATUS
-EFIAPI
-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;
-}
-
-/**
- Reads from the memory space of a PCI controller. Returns either when the polling exit criteria is
- satisfied or after a defined duration.
-
- @param This A pointer to the EFI_PCI_IO_PROTOCOL instance.
- @param Width Signifies the width of the memory or I/O operations.
- @param BarIndex The BAR index of the standard PCI Configuration header to use as the
- base address for the memory operation to perform.
- @param Offset The offset within the selected BAR to start the memory operation.
- @param Mask Mask used for the polling criteria.
- @param Value The comparison value used for the polling exit criteria.
- @param Delay The number of 100 ns units to poll.
- @param Result Pointer to the last value read from the memory location.
-
-**/
-STATIC
-EFI_STATUS
-EFIAPI
-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;
-}
-
-/**
- Enable a PCI driver to access PCI controller registers in the PCI memory or I/O space.
-
- @param Width Signifies the width of the memory or I/O operations.
- @param Count The number of memory or I/O operations to perform.
- @param DstStride The stride of the destination buffer.
- @param Dst For read operations, the destination buffer to store the results. For write
- operations, the destination buffer to write data to.
- @param SrcStride The stride of the source buffer.
- @param Src For read operations, the source buffer to read data from. For write
- operations, the source buffer to write data from.
-
- @retval EFI_SUCCESS The data was read from or written to the PCI controller.
- @retval EFI_INVALID_PARAMETER One or more parameters are invalid.
-
-**/
-STATIC
-EFI_STATUS
-EFIAPI
-PciIoMemRW (
- IN EFI_PCI_IO_PROTOCOL_WIDTH Width,
- IN UINTN Count,
- IN UINTN DstStride,
- IN VOID *Dst,
- IN UINTN SrcStride,
- OUT CONST VOID *Src
- )
-{
- volatile UINT8 *Dst8;
- volatile UINT16 *Dst16;
- volatile UINT32 *Dst32;
- volatile CONST UINT8 *Src8;
- volatile CONST UINT16 *Src16;
- volatile CONST UINT32 *Src32;
-
- //
- // Loop for each iteration and move the data
- //
- switch (Width & 0x3) {
- case EfiPciWidthUint8:
- Dst8 = (UINT8 *)Dst;
- Src8 = (UINT8 *)Src;
- for (;Count > 0; Count--, Dst8 += DstStride, Src8 += SrcStride) {
- *Dst8 = *Src8;
- }
- break;
- case EfiPciWidthUint16:
- Dst16 = (UINT16 *)Dst;
- Src16 = (UINT16 *)Src;
- for (;Count > 0; Count--, Dst16 += DstStride, Src16 += SrcStride) {
- *Dst16 = *Src16;
- }
- break;
- case EfiPciWidthUint32:
- Dst32 = (UINT32 *)Dst;
- Src32 = (UINT32 *)Src;
- for (;Count > 0; Count--, Dst32 += DstStride, Src32 += SrcStride) {
- *Dst32 = *Src32;
- }
- break;
- default:
- return EFI_INVALID_PARAMETER;
- }
-
- return EFI_SUCCESS;
-}
-
-/**
- Enable a PCI driver to access PCI controller registers in the PCI memory or I/O space.
-
- @param This A pointer to the EFI_PCI_IO_PROTOCOL instance.
- @param Width Signifies the width of the memory or I/O operations.
- @param BarIndex The BAR index of the standard PCI Configuration header to use as the
- base address for the memory or I/O operation to perform.
- @param Offset The offset within the selected BAR to start the memory or I/O operation.
- @param Count The number of memory or I/O 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 controller.
- @retval EFI_UNSUPPORTED BarIndex not valid for this PCI controller.
- @retval EFI_UNSUPPORTED The address range specified by Offset, Width, and Count is not
- valid for the PCI BAR specified by BarIndex.
- @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.
-
-**/
-STATIC
-EFI_STATUS
-EFIAPI
-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
- )
-{
- NON_DISCOVERABLE_PCI_DEVICE *Dev;
- UINTN AlignMask;
- VOID *Address;
- EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR *Desc;
- EFI_STATUS Status;
-
- if (Buffer == NULL) {
- return EFI_INVALID_PARAMETER;
- }
-
- Dev = NON_DISCOVERABLE_PCI_DEVICE_FROM_PCI_IO(This);
-
- //
- // Only allow accesses to the BARs we emulate
- //
- Status = GetBarResource (Dev, BarIndex, &Desc);
- if (EFI_ERROR (Status)) {
- return Status;
- }
-
- if (Offset + (Count << (Width & 0x3)) > Desc->AddrLen) {
- return EFI_UNSUPPORTED;
- }
-
- Address = (VOID *)(UINTN)(Desc->AddrRangeMin + Offset);
- AlignMask = (1 << (Width & 0x03)) - 1;
- if ((UINTN)Address & AlignMask) {
- return EFI_INVALID_PARAMETER;
- }
-
- switch (Width) {
- case EfiPciIoWidthUint8:
- case EfiPciIoWidthUint16:
- case EfiPciIoWidthUint32:
- case EfiPciIoWidthUint64:
- return PciIoMemRW (Width, Count, 1, Buffer, 1, Address);
-
- case EfiPciIoWidthFifoUint8:
- case EfiPciIoWidthFifoUint16:
- case EfiPciIoWidthFifoUint32:
- case EfiPciIoWidthFifoUint64:
- return PciIoMemRW (Width, Count, 1, Buffer, 0, Address);
-
- case EfiPciIoWidthFillUint8:
- case EfiPciIoWidthFillUint16:
- case EfiPciIoWidthFillUint32:
- case EfiPciIoWidthFillUint64:
- return PciIoMemRW (Width, Count, 0, Buffer, 1, Address);
-
- default:
- break;
- }
- return EFI_INVALID_PARAMETER;
-}
-
-/**
- Enable a PCI driver to access PCI controller registers in the PCI memory or I/O space.
-
- @param This A pointer to the EFI_PCI_IO_PROTOCOL instance.
- @param Width Signifies the width of the memory or I/O operations.
- @param BarIndex The BAR index of the standard PCI Configuration header to use as the
- base address for the memory or I/O operation to perform.
- @param Offset The offset within the selected BAR to start the memory or I/O operation.
- @param Count The number of memory or I/O 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 controller.
- @retval EFI_UNSUPPORTED BarIndex not valid for this PCI controller.
- @retval EFI_UNSUPPORTED The address range specified by Offset, Width, and Count is not
- valid for the PCI BAR specified by BarIndex.
- @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.
-
-**/
-STATIC
-EFI_STATUS
-EFIAPI
-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
- )
-{
- NON_DISCOVERABLE_PCI_DEVICE *Dev;
- UINTN AlignMask;
- VOID *Address;
- EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR *Desc;
- EFI_STATUS Status;
-
- if (Buffer == NULL) {
- return EFI_INVALID_PARAMETER;
- }
-
- Dev = NON_DISCOVERABLE_PCI_DEVICE_FROM_PCI_IO(This);
-
- //
- // Only allow accesses to the BARs we emulate
- //
- Status = GetBarResource (Dev, BarIndex, &Desc);
- if (EFI_ERROR (Status)) {
- return Status;
- }
-
- if (Offset + (Count << (Width & 0x3)) > Desc->AddrLen) {
- return EFI_UNSUPPORTED;
- }
-
- Address = (VOID *)(UINTN)(Desc->AddrRangeMin + Offset);
- AlignMask = (1 << (Width & 0x03)) - 1;
- if ((UINTN)Address & AlignMask) {
- return EFI_INVALID_PARAMETER;
- }
-
- switch (Width) {
- case EfiPciIoWidthUint8:
- case EfiPciIoWidthUint16:
- case EfiPciIoWidthUint32:
- case EfiPciIoWidthUint64:
- return PciIoMemRW (Width, Count, 1, Address, 1, Buffer);
-
- case EfiPciIoWidthFifoUint8:
- case EfiPciIoWidthFifoUint16:
- case EfiPciIoWidthFifoUint32:
- case EfiPciIoWidthFifoUint64:
- return PciIoMemRW (Width, Count, 0, Address, 1, Buffer);
-
- case EfiPciIoWidthFillUint8:
- case EfiPciIoWidthFillUint16:
- case EfiPciIoWidthFillUint32:
- case EfiPciIoWidthFillUint64:
- return PciIoMemRW (Width, Count, 1, Address, 0, Buffer);
-
- default:
- break;
- }
- return EFI_INVALID_PARAMETER;
-}
-
-/**
- Enable a PCI driver to access PCI controller registers in the PCI memory or I/O space.
-
- @param This A pointer to the EFI_PCI_IO_PROTOCOL instance.
- @param Width Signifies the width of the memory or I/O operations.
- @param BarIndex The BAR index of the standard PCI Configuration header to use as the
- base address for the memory or I/O operation to perform.
- @param Offset The offset within the selected BAR to start the memory or I/O operation.
- @param Count The number of memory or I/O 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.
-
-**/
-STATIC
-EFI_STATUS
-EFIAPI
-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;
-}
-
-/**
- Enable a PCI driver to access PCI controller registers in the PCI memory or I/O space.
-
- @param This A pointer to the EFI_PCI_IO_PROTOCOL instance.
- @param Width Signifies the width of the memory or I/O operations.
- @param BarIndex The BAR index of the standard PCI Configuration header to use as the
- base address for the memory or I/O operation to perform.
- @param Offset The offset within the selected BAR to start the memory or I/O operation.
- @param Count The number of memory or I/O 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.
-
-**/
-STATIC
-EFI_STATUS
-EFIAPI
-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 access PCI config space.
-
- @param This A pointer to the EFI_PCI_IO_PROTOCOL instance.
- @param Width Signifies the width of the memory or I/O operations.
- @param Offset The offset within the selected BAR to start the memory or I/O operation.
- @param Count The number of memory or I/O 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.
-
-**/
-STATIC
-EFI_STATUS
-EFIAPI
-PciIoPciRead (
- IN EFI_PCI_IO_PROTOCOL *This,
- IN EFI_PCI_IO_PROTOCOL_WIDTH Width,
- IN UINT32 Offset,
- IN UINTN Count,
- IN OUT VOID *Buffer
- )
-{
- NON_DISCOVERABLE_PCI_DEVICE *Dev;
- VOID *Address;
- UINTN Length;
-
- if (Width < 0 || Width >= EfiPciIoWidthMaximum || Buffer == NULL) {
- return EFI_INVALID_PARAMETER;
- }
-
- Dev = NON_DISCOVERABLE_PCI_DEVICE_FROM_PCI_IO(This);
- Address = (UINT8 *)&Dev->ConfigSpace + Offset;
- Length = Count << ((UINTN)Width & 0x3);
-
- if (Offset + Length > sizeof (Dev->ConfigSpace)) {
- //
- // Read all zeroes for config space accesses beyond the first
- // 64 bytes
- //
- Length -= sizeof (Dev->ConfigSpace) - Offset;
- ZeroMem ((UINT8 *)Buffer + sizeof (Dev->ConfigSpace) - Offset, Length);
-
- Count -= Length >> ((UINTN)Width & 0x3);
- }
- return PciIoMemRW (Width, Count, 1, Buffer, 1, Address);
-}
-
-/**
- Enable a PCI driver to access PCI config space.
-
- @param This A pointer to the EFI_PCI_IO_PROTOCOL instance.
- @param Width Signifies the width of the memory or I/O operations.
- @param Offset The offset within the selected BAR to start the memory or I/O operation.
- @param Count The number of memory or I/O 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 controller.
- @retval EFI_UNSUPPORTED The address range specified by Offset, Width, and Count is not
- valid for the PCI BAR specified by BarIndex.
- @retval EFI_INVALID_PARAMETER One or more parameters are invalid.
-
-**/
-STATIC
-EFI_STATUS
-EFIAPI
-PciIoPciWrite (
- IN EFI_PCI_IO_PROTOCOL *This,
- IN EFI_PCI_IO_PROTOCOL_WIDTH Width,
- IN UINT32 Offset,
- IN UINTN Count,
- IN OUT VOID *Buffer
- )
-{
- NON_DISCOVERABLE_PCI_DEVICE *Dev;
- VOID *Address;
-
- if (Width < 0 || Width >= EfiPciIoWidthMaximum || Buffer == NULL) {
- return EFI_INVALID_PARAMETER;
- }
-
- Dev = NON_DISCOVERABLE_PCI_DEVICE_FROM_PCI_IO(This);
- Address = (UINT8 *)&Dev->ConfigSpace + Offset;
-
- if (Offset + (Count << ((UINTN)Width & 0x3)) > sizeof (Dev->ConfigSpace)) {
- return EFI_UNSUPPORTED;
- }
-
- return PciIoMemRW (Width, Count, 1, Address, 1, Buffer);
-}
-
-/**
- Enables a PCI driver to copy one region of PCI memory space to another region of PCI
- memory space.
-
- @param This A pointer to the EFI_PCI_IO_PROTOCOL instance.
- @param Width Signifies the width of the memory operations.
- @param DestBarIndex The BAR index in the standard PCI Configuration header to use as the
- base address for the memory operation to perform.
- @param DestOffset The destination offset within the BAR specified by DestBarIndex to
- start the memory writes for the copy operation.
- @param SrcBarIndex The BAR index in the standard PCI Configuration header to use as the
- base address for the memory operation to perform.
- @param SrcOffset The source offset within the BAR specified by SrcBarIndex to start
- the memory reads for the copy operation.
- @param Count The number of memory operations to perform. Bytes moved is Width
- size * Count, starting at DestOffset and SrcOffset.
-
-**/
-STATIC
-EFI_STATUS
-EFIAPI
-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;
-}
-
-/**
- Provides the PCI controller-specific addresses needed to access system memory.
-
- @param This A pointer to the EFI_PCI_IO_PROTOCOL instance.
- @param Operation Indicates if the bus master is going to read or write to system memory.
- @param HostAddress The system memory address to map to the PCI controller.
- @param NumberOfBytes On input the number of bytes to map. On output the number of bytes
- that were mapped.
- @param DeviceAddress The resulting map address for the bus master PCI controller to use to
- access the hosts HostAddress.
- @param Mapping A resulting value to pass to Unmap().
-
- @retval EFI_SUCCESS The range was mapped for the returned NumberOfBytes.
- @retval EFI_UNSUPPORTED The HostAddress cannot be mapped as a common buffer.
- @retval EFI_INVALID_PARAMETER One or more parameters are invalid.
- @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of resources.
- @retval EFI_DEVICE_ERROR The system hardware could not map the requested address.
-
-**/
-STATIC
-EFI_STATUS
-EFIAPI
-CoherentPciIoMap (
- 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
- )
-{
- NON_DISCOVERABLE_PCI_DEVICE *Dev;
- EFI_STATUS Status;
- NON_DISCOVERABLE_PCI_DEVICE_MAP_INFO *MapInfo;
-
- //
- // If HostAddress exceeds 4 GB, and this device does not support 64-bit DMA
- // addressing, we need to allocate a bounce buffer and copy over the data.
- //
- Dev = NON_DISCOVERABLE_PCI_DEVICE_FROM_PCI_IO(This);
- if ((Dev->Attributes & EFI_PCI_IO_ATTRIBUTE_DUAL_ADDRESS_CYCLE) == 0 &&
- (EFI_PHYSICAL_ADDRESS)(UINTN)HostAddress + *NumberOfBytes > SIZE_4GB) {
-
- //
- // Bounce buffering is not possible for consistent mappings
- //
- if (Operation == EfiPciIoOperationBusMasterCommonBuffer) {
- return EFI_UNSUPPORTED;
- }
-
- MapInfo = AllocatePool (sizeof *MapInfo);
- if (MapInfo == NULL) {
- return EFI_OUT_OF_RESOURCES;
- }
-
- MapInfo->AllocAddress = MAX_UINT32;
- MapInfo->HostAddress = HostAddress;
- MapInfo->Operation = Operation;
- MapInfo->NumberOfBytes = *NumberOfBytes;
-
- Status = gBS->AllocatePages (AllocateMaxAddress, EfiBootServicesData,
- EFI_SIZE_TO_PAGES (MapInfo->NumberOfBytes),
- &MapInfo->AllocAddress);
- if (EFI_ERROR (Status)) {
- //
- // If we fail here, it is likely because the system has no memory below
- // 4 GB to begin with. There is not much we can do about that other than
- // fail the map request.
- //
- FreePool (MapInfo);
- return EFI_DEVICE_ERROR;
- }
- if (Operation == EfiPciIoOperationBusMasterRead) {
- gBS->CopyMem ((VOID *)(UINTN)MapInfo->AllocAddress, HostAddress,
- *NumberOfBytes);
- }
- *DeviceAddress = MapInfo->AllocAddress;
- *Mapping = MapInfo;
- } else {
- *DeviceAddress = (EFI_PHYSICAL_ADDRESS)(UINTN)HostAddress;
- *Mapping = NULL;
- }
- return EFI_SUCCESS;
-}
-
-/**
- Completes the Map() operation and releases any corresponding resources.
-
- @param This A pointer to the EFI_PCI_IO_PROTOCOL instance.
- @param Mapping The mapping value returned from Map().
-
- @retval EFI_SUCCESS The range was unmapped.
-
-**/
-STATIC
-EFI_STATUS
-EFIAPI
-CoherentPciIoUnmap (
- IN EFI_PCI_IO_PROTOCOL *This,
- IN VOID *Mapping
- )
-{
- NON_DISCOVERABLE_PCI_DEVICE_MAP_INFO *MapInfo;
-
- MapInfo = Mapping;
- if (MapInfo != NULL) {
- if (MapInfo->Operation == EfiPciIoOperationBusMasterWrite) {
- gBS->CopyMem (MapInfo->HostAddress, (VOID *)(UINTN)MapInfo->AllocAddress,
- MapInfo->NumberOfBytes);
- }
- gBS->FreePages (MapInfo->AllocAddress,
- EFI_SIZE_TO_PAGES (MapInfo->NumberOfBytes));
- FreePool (MapInfo);
- }
- return EFI_SUCCESS;
-}
-
-/**
- Allocates pages.
-
- @param This A pointer to the EFI_PCI_IO_PROTOCOL instance.
- @param Type This parameter is not used and must be ignored.
- @param MemoryType The type of memory to allocate, EfiBootServicesData or
- EfiRuntimeServicesData.
- @param Pages The number of pages to allocate.
- @param HostAddress A pointer to store the base system memory address of the
- allocated range.
- @param Attributes The requested bit mask of attributes for the allocated range.
-
- @retval EFI_SUCCESS The requested memory pages were allocated.
- @retval EFI_UNSUPPORTED Attributes is unsupported. The only legal attribute bits are
- MEMORY_WRITE_COMBINE and MEMORY_CACHED.
- @retval EFI_INVALID_PARAMETER One or more parameters are invalid.
- @retval EFI_OUT_OF_RESOURCES The memory pages could not be allocated.
-
-**/
-STATIC
-EFI_STATUS
-EFIAPI
-CoherentPciIoAllocateBuffer (
- 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
- )
-{
- NON_DISCOVERABLE_PCI_DEVICE *Dev;
- EFI_PHYSICAL_ADDRESS AllocAddress;
- EFI_ALLOCATE_TYPE AllocType;
- EFI_STATUS Status;
-
- if ((Attributes & ~(EFI_PCI_ATTRIBUTE_MEMORY_WRITE_COMBINE |
- EFI_PCI_ATTRIBUTE_MEMORY_CACHED)) != 0) {
- return EFI_UNSUPPORTED;
- }
-
- //
- // Allocate below 4 GB if the dual address cycle attribute has not
- // been set. If the system has no memory available below 4 GB, there
- // is little we can do except propagate the error.
- //
- Dev = NON_DISCOVERABLE_PCI_DEVICE_FROM_PCI_IO(This);
- if ((Dev->Attributes & EFI_PCI_IO_ATTRIBUTE_DUAL_ADDRESS_CYCLE) == 0) {
- AllocAddress = MAX_UINT32;
- AllocType = AllocateMaxAddress;
- } else {
- AllocType = AllocateAnyPages;
- }
-
- Status = gBS->AllocatePages (AllocType, MemoryType, Pages, &AllocAddress);
- if (!EFI_ERROR (Status)) {
- *HostAddress = (VOID *)(UINTN)AllocAddress;
- }
- return Status;
-}
-
-/**
- Frees memory that was allocated in function CoherentPciIoAllocateBuffer ().
-
- @param This A pointer to the EFI_PCI_IO_PROTOCOL instance.
- @param Pages The number of pages to free.
- @param HostAddress The base system memory address of the allocated range.
-
- @retval EFI_SUCCESS The requested memory pages were freed.
-
-**/
-STATIC
-EFI_STATUS
-EFIAPI
-CoherentPciIoFreeBuffer (
- IN EFI_PCI_IO_PROTOCOL *This,
- IN UINTN Pages,
- IN VOID *HostAddress
- )
-{
- FreePages (HostAddress, Pages);
- return EFI_SUCCESS;
-}
-
-/**
- Frees memory that was allocated in function NonCoherentPciIoAllocateBuffer ().
-
- @param This A pointer to the EFI_PCI_IO_PROTOCOL instance.
- @param Pages The number of pages to free.
- @param HostAddress The base system memory address of the allocated range.
-
- @retval EFI_SUCCESS The requested memory pages were freed.
- @retval others The operation contain some errors.
-
-**/
-STATIC
-EFI_STATUS
-EFIAPI
-NonCoherentPciIoFreeBuffer (
- IN EFI_PCI_IO_PROTOCOL *This,
- IN UINTN Pages,
- IN VOID *HostAddress
- )
-{
- NON_DISCOVERABLE_PCI_DEVICE *Dev;
- LIST_ENTRY *Entry;
- EFI_STATUS Status;
- NON_DISCOVERABLE_DEVICE_UNCACHED_ALLOCATION *Alloc;
- BOOLEAN Found;
-
- Dev = NON_DISCOVERABLE_PCI_DEVICE_FROM_PCI_IO(This);
-
- Found = FALSE;
- Alloc = NULL;
-
- //
- // Find the uncached allocation list entry associated
- // with this allocation
- //
- for (Entry = Dev->UncachedAllocationList.ForwardLink;
- Entry != &Dev->UncachedAllocationList;
- Entry = Entry->ForwardLink) {
-
- Alloc = BASE_CR (Entry, NON_DISCOVERABLE_DEVICE_UNCACHED_ALLOCATION, List);
- if (Alloc->HostAddress == HostAddress && Alloc->NumPages == Pages) {
- //
- // We are freeing the exact allocation we were given
- // before by AllocateBuffer()
- //
- Found = TRUE;
- break;
- }
- }
-
- if (!Found) {
- ASSERT_EFI_ERROR (EFI_NOT_FOUND);
- return EFI_NOT_FOUND;
- }
-
- RemoveEntryList (&Alloc->List);
-
- Status = gDS->SetMemorySpaceAttributes (
- (EFI_PHYSICAL_ADDRESS)(UINTN)HostAddress,
- EFI_PAGES_TO_SIZE (Pages),
- Alloc->Attributes);
- if (EFI_ERROR (Status)) {
- goto FreeAlloc;
- }
-
- //
- // If we fail to restore the original attributes, it is better to leak the
- // memory than to return it to the heap
- //
- FreePages (HostAddress, Pages);
-
-FreeAlloc:
- FreePool (Alloc);
- return Status;
-}
-
-/**
- Allocates pages.
-
- @param This A pointer to the EFI_PCI_IO_PROTOCOL instance.
- @param Type This parameter is not used and must be ignored.
- @param MemoryType The type of memory to allocate, EfiBootServicesData or
- EfiRuntimeServicesData.
- @param Pages The number of pages to allocate.
- @param HostAddress A pointer to store the base system memory address of the
- allocated range.
- @param Attributes The requested bit mask of attributes for the allocated range.
-
- @retval EFI_SUCCESS The requested memory pages were allocated.
- @retval EFI_UNSUPPORTED Attributes is unsupported. The only legal attribute bits are
- MEMORY_WRITE_COMBINE and MEMORY_CACHED.
- @retval EFI_INVALID_PARAMETER One or more parameters are invalid.
- @retval EFI_OUT_OF_RESOURCES The memory pages could not be allocated.
-
-**/
-STATIC
-EFI_STATUS
-EFIAPI
-NonCoherentPciIoAllocateBuffer (
- 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
- )
-{
- NON_DISCOVERABLE_PCI_DEVICE *Dev;
- EFI_GCD_MEMORY_SPACE_DESCRIPTOR GcdDescriptor;
- EFI_STATUS Status;
- UINT64 MemType;
- NON_DISCOVERABLE_DEVICE_UNCACHED_ALLOCATION *Alloc;
- VOID *AllocAddress;
-
- Dev = NON_DISCOVERABLE_PCI_DEVICE_FROM_PCI_IO(This);
-
- Status = CoherentPciIoAllocateBuffer (This, Type, MemoryType, Pages,
- &AllocAddress, Attributes);
- if (EFI_ERROR (Status)) {
- return Status;
- }
-
- Status = gDS->GetMemorySpaceDescriptor (
- (EFI_PHYSICAL_ADDRESS)(UINTN)AllocAddress,
- &GcdDescriptor);
- if (EFI_ERROR (Status)) {
- goto FreeBuffer;
- }
-
- if ((GcdDescriptor.Capabilities & (EFI_MEMORY_WC | EFI_MEMORY_UC)) == 0) {
- Status = EFI_UNSUPPORTED;
- goto FreeBuffer;
- }
-
- //
- // Set the preferred memory attributes
- //
- if ((Attributes & EFI_PCI_ATTRIBUTE_MEMORY_WRITE_COMBINE) != 0 ||
- (GcdDescriptor.Capabilities & EFI_MEMORY_UC) == 0) {
- //
- // Use write combining if it was requested, or if it is the only
- // type supported by the region.
- //
- MemType = EFI_MEMORY_WC;
- } else {
- MemType = EFI_MEMORY_UC;
- }
-
- Alloc = AllocatePool (sizeof *Alloc);
- if (Alloc == NULL) {
- goto FreeBuffer;
- }
-
- Alloc->HostAddress = AllocAddress;
- Alloc->NumPages = Pages;
- Alloc->Attributes = GcdDescriptor.Attributes;
-
- //
- // Record this allocation in the linked list, so we
- // can restore the memory space attributes later
- //
- InsertHeadList (&Dev->UncachedAllocationList, &Alloc->List);
-
- Status = gDS->SetMemorySpaceAttributes (
- (EFI_PHYSICAL_ADDRESS)(UINTN)AllocAddress,
- EFI_PAGES_TO_SIZE (Pages),
- MemType);
- if (EFI_ERROR (Status)) {
- goto RemoveList;
- }
-
- Status = mCpu->FlushDataCache (
- mCpu,
- (EFI_PHYSICAL_ADDRESS)(UINTN)AllocAddress,
- EFI_PAGES_TO_SIZE (Pages),
- EfiCpuFlushTypeInvalidate);
- if (EFI_ERROR (Status)) {
- goto RemoveList;
- }
-
- *HostAddress = AllocAddress;
-
- return EFI_SUCCESS;
-
-RemoveList:
- RemoveEntryList (&Alloc->List);
- FreePool (Alloc);
-
-FreeBuffer:
- CoherentPciIoFreeBuffer (This, Pages, AllocAddress);
- return Status;
-}
-
-/**
- Provides the PCI controller-specific addresses needed to access system memory.
-
- @param This A pointer to the EFI_PCI_IO_PROTOCOL instance.
- @param Operation Indicates if the bus master is going to read or write to system memory.
- @param HostAddress The system memory address to map to the PCI controller.
- @param NumberOfBytes On input the number of bytes to map. On output the number of bytes
- that were mapped.
- @param DeviceAddress The resulting map address for the bus master PCI controller to use to
- access the hosts HostAddress.
- @param Mapping A resulting value to pass to Unmap().
-
- @retval EFI_SUCCESS The range was mapped for the returned NumberOfBytes.
- @retval EFI_UNSUPPORTED The HostAddress cannot be mapped as a common buffer.
- @retval EFI_INVALID_PARAMETER One or more parameters are invalid.
- @retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of resources.
- @retval EFI_DEVICE_ERROR The system hardware could not map the requested address.
-
-**/
-STATIC
-EFI_STATUS
-EFIAPI
-NonCoherentPciIoMap (
- 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
- )
-{
- NON_DISCOVERABLE_PCI_DEVICE *Dev;
- EFI_STATUS Status;
- NON_DISCOVERABLE_PCI_DEVICE_MAP_INFO *MapInfo;
- UINTN AlignMask;
- VOID *AllocAddress;
- EFI_GCD_MEMORY_SPACE_DESCRIPTOR GcdDescriptor;
- BOOLEAN Bounce;
-
- MapInfo = AllocatePool (sizeof *MapInfo);
- if (MapInfo == NULL) {
- return EFI_OUT_OF_RESOURCES;
- }
-
- MapInfo->HostAddress = HostAddress;
- MapInfo->Operation = Operation;
- MapInfo->NumberOfBytes = *NumberOfBytes;
-
- Dev = NON_DISCOVERABLE_PCI_DEVICE_FROM_PCI_IO(This);
-
- //
- // If this device does not support 64-bit DMA addressing, we need to allocate
- // a bounce buffer and copy over the data in case HostAddress >= 4 GB.
- //
- Bounce = ((Dev->Attributes & EFI_PCI_IO_ATTRIBUTE_DUAL_ADDRESS_CYCLE) == 0 &&
- (EFI_PHYSICAL_ADDRESS)(UINTN)HostAddress + *NumberOfBytes > SIZE_4GB);
-
- if (!Bounce) {
- switch (Operation) {
- case EfiPciIoOperationBusMasterRead:
- case EfiPciIoOperationBusMasterWrite:
- //
- // For streaming DMA, it is sufficient if the buffer is aligned to
- // the CPUs DMA buffer alignment.
- //
- AlignMask = mCpu->DmaBufferAlignment - 1;
- if ((((UINTN) HostAddress | *NumberOfBytes) & AlignMask) == 0) {
- break;
- }
- // fall through
-
- case EfiPciIoOperationBusMasterCommonBuffer:
- //
- // Check whether the host address refers to an uncached mapping.
- //
- Status = gDS->GetMemorySpaceDescriptor (
- (EFI_PHYSICAL_ADDRESS)(UINTN)HostAddress,
- &GcdDescriptor);
- if (EFI_ERROR (Status) ||
- (GcdDescriptor.Attributes & (EFI_MEMORY_WB|EFI_MEMORY_WT)) != 0) {
- Bounce = TRUE;
- }
- break;
-
- default:
- ASSERT (FALSE);
- }
- }
-
- if (Bounce) {
- if (Operation == EfiPciIoOperationBusMasterCommonBuffer) {
- Status = EFI_DEVICE_ERROR;
- goto FreeMapInfo;
- }
-
- Status = NonCoherentPciIoAllocateBuffer (This, AllocateAnyPages,
- EfiBootServicesData, EFI_SIZE_TO_PAGES (MapInfo->NumberOfBytes),
- &AllocAddress, EFI_PCI_ATTRIBUTE_MEMORY_WRITE_COMBINE);
- if (EFI_ERROR (Status)) {
- goto FreeMapInfo;
- }
- MapInfo->AllocAddress = (EFI_PHYSICAL_ADDRESS)(UINTN)AllocAddress;
- if (Operation == EfiPciIoOperationBusMasterRead) {
- gBS->CopyMem (AllocAddress, HostAddress, *NumberOfBytes);
- }
- *DeviceAddress = MapInfo->AllocAddress;
- } else {
- MapInfo->AllocAddress = 0;
- *DeviceAddress = (EFI_PHYSICAL_ADDRESS)(UINTN)HostAddress;
-
- //
- // We are not using a bounce buffer: the mapping is sufficiently
- // aligned to allow us to simply flush the caches. Note that cleaning
- // the caches is necessary for both data directions:
- // - for bus master read, we want the latest data to be present
- // in main memory
- // - for bus master write, we don't want any stale dirty cachelines that
- // may be written back unexpectedly, and clobber the data written to
- // main memory by the device.
- //
- mCpu->FlushDataCache (mCpu, (EFI_PHYSICAL_ADDRESS)(UINTN)HostAddress,
- *NumberOfBytes, EfiCpuFlushTypeWriteBack);
- }
-
- *Mapping = MapInfo;
- return EFI_SUCCESS;
-
-FreeMapInfo:
- FreePool (MapInfo);
-
- return Status;
-}
-
-/**
- Completes the Map() operation and releases any corresponding resources.
-
- @param This A pointer to the EFI_PCI_IO_PROTOCOL instance.
- @param Mapping The mapping value returned from Map().
-
- @retval EFI_SUCCESS The range was unmapped.
-
-**/
-STATIC
-EFI_STATUS
-EFIAPI
-NonCoherentPciIoUnmap (
- IN EFI_PCI_IO_PROTOCOL *This,
- IN VOID *Mapping
- )
-{
- NON_DISCOVERABLE_PCI_DEVICE_MAP_INFO *MapInfo;
-
- if (Mapping == NULL) {
- return EFI_DEVICE_ERROR;
- }
-
- MapInfo = Mapping;
- if (MapInfo->AllocAddress != 0) {
- //
- // We are using a bounce buffer: copy back the data if necessary,
- // and free the buffer.
- //
- if (MapInfo->Operation == EfiPciIoOperationBusMasterWrite) {
- gBS->CopyMem (MapInfo->HostAddress, (VOID *)(UINTN)MapInfo->AllocAddress,
- MapInfo->NumberOfBytes);
- }
- NonCoherentPciIoFreeBuffer (This,
- EFI_SIZE_TO_PAGES (MapInfo->NumberOfBytes),
- (VOID *)(UINTN)MapInfo->AllocAddress);
- } else {
- //
- // We are *not* using a bounce buffer: if this is a bus master write,
- // we have to invalidate the caches so the CPU will see the uncached
- // data written by the device.
- //
- if (MapInfo->Operation == EfiPciIoOperationBusMasterWrite) {
- mCpu->FlushDataCache (mCpu,
- (EFI_PHYSICAL_ADDRESS)(UINTN)MapInfo->HostAddress,
- MapInfo->NumberOfBytes, EfiCpuFlushTypeInvalidate);
- }
- }
- FreePool (MapInfo);
- return EFI_SUCCESS;
-}
-
-/**
- Flushes all PCI posted write transactions from a PCI host bridge to system memory.
-
- @param This A pointer to the EFI_PCI_IO_PROTOCOL instance.
-
-**/
-STATIC
-EFI_STATUS
-EFIAPI
-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 This A pointer to the EFI_PCI_IO_PROTOCOL instance.
- @param SegmentNumber The PCI controller's current PCI segment number.
- @param BusNumber The PCI controller's current PCI bus number.
- @param DeviceNumber The PCI controller's current PCI device number.
- @param FunctionNumber The PCI controller's current PCI function number.
-
- @retval EFI_SUCCESS The PCI controller location was returned.
- @retval EFI_INVALID_PARAMETER One or more parameters are invalid.
-
-**/
-STATIC
-EFI_STATUS
-EFIAPI
-PciIoGetLocation (
- IN EFI_PCI_IO_PROTOCOL *This,
- OUT UINTN *SegmentNumber,
- OUT UINTN *BusNumber,
- OUT UINTN *DeviceNumber,
- OUT UINTN *FunctionNumber
- )
-{
- if (SegmentNumber == NULL ||
- BusNumber == NULL ||
- DeviceNumber == NULL ||
- FunctionNumber == NULL) {
- return EFI_INVALID_PARAMETER;
- }
-
- *SegmentNumber = 0;
- *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 This A pointer to the EFI_PCI_IO_PROTOCOL instance.
- @param Operation The operation to perform on the attributes for this PCI controller.
- @param Attributes The mask of attributes that are used for Set, Enable, and Disable
- operations.
- @param Result A pointer to the result mask of attributes that are returned for the Get
- and Supported operations.
-
- @retval EFI_SUCCESS The operation on the PCI controller's attributes was completed.
- @retval EFI_INVALID_PARAMETER One or more parameters are invalid.
- @retval EFI_UNSUPPORTED one or more of the bits set in
- Attributes are not supported by this PCI controller or one of
- its parent bridges when Operation is Set, Enable or Disable.
-
-**/
-STATIC
-EFI_STATUS
-EFIAPI
-PciIoAttributes (
- IN EFI_PCI_IO_PROTOCOL *This,
- IN EFI_PCI_IO_PROTOCOL_ATTRIBUTE_OPERATION Operation,
- IN UINT64 Attributes,
- OUT UINT64 *Result OPTIONAL
- )
-{
- NON_DISCOVERABLE_PCI_DEVICE *Dev;
- BOOLEAN Enable;
-
- Dev = NON_DISCOVERABLE_PCI_DEVICE_FROM_PCI_IO(This);
-
- Enable = FALSE;
- switch (Operation) {
- case EfiPciIoAttributeOperationGet:
- if (Result == NULL) {
- return EFI_INVALID_PARAMETER;
- }
- *Result = Dev->Attributes;
- break;
-
- case EfiPciIoAttributeOperationSupported:
- if (Result == NULL) {
- return EFI_INVALID_PARAMETER;
- }
- *Result = EFI_PCI_DEVICE_ENABLE | EFI_PCI_IO_ATTRIBUTE_DUAL_ADDRESS_CYCLE;
- break;
-
- case EfiPciIoAttributeOperationEnable:
- Attributes |= Dev->Attributes;
- case EfiPciIoAttributeOperationSet:
- Enable = ((~Dev->Attributes & Attributes) & EFI_PCI_DEVICE_ENABLE) != 0;
- Dev->Attributes = Attributes;
- break;
-
- case EfiPciIoAttributeOperationDisable:
- Dev->Attributes &= ~Attributes;
- break;
-
- default:
- return EFI_INVALID_PARAMETER;
- };
-
- //
- // If we're setting any of the EFI_PCI_DEVICE_ENABLE bits, perform
- // the device specific initialization now.
- //
- if (Enable && !Dev->Enabled && Dev->Device->Initialize != NULL) {
- Dev->Device->Initialize (Dev->Device);
- Dev->Enabled = TRUE;
- }
- return EFI_SUCCESS;
-}
-
-/**
- Gets the attributes that this PCI controller supports setting on a BAR using
- SetBarAttributes(), and retrieves the list of resource descriptors for a BAR.
-
- @param This A pointer to the EFI_PCI_IO_PROTOCOL instance.
- @param BarIndex The BAR index of the standard PCI Configuration header to use as the
- base address for resource range. The legal range for this field is 0..5.
- @param Supports A pointer to the mask of attributes that this PCI controller supports
- setting for this BAR with SetBarAttributes().
- @param Resources A pointer to the ACPI 2.0 resource descriptors that describe the current
- configuration of this BAR of the PCI controller.
-
- @retval EFI_SUCCESS If Supports is not NULL, then the attributes that the PCI
- controller supports are returned in Supports. If Resources
- is not NULL, then the ACPI 2.0 resource descriptors that the PCI
- controller is currently using are returned in Resources.
- @retval EFI_INVALID_PARAMETER Both Supports and Attributes are NULL.
- @retval EFI_UNSUPPORTED BarIndex not valid for this PCI controller.
- @retval EFI_OUT_OF_RESOURCES There are not enough resources available to allocate
- Resources.
-
-**/
-STATIC
-EFI_STATUS
-EFIAPI
-PciIoGetBarAttributes (
- IN EFI_PCI_IO_PROTOCOL *This,
- IN UINT8 BarIndex,
- OUT UINT64 *Supports OPTIONAL,
- OUT VOID **Resources OPTIONAL
- )
-{
- NON_DISCOVERABLE_PCI_DEVICE *Dev;
- EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR *Descriptor;
- EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR *BarDesc;
- EFI_ACPI_END_TAG_DESCRIPTOR *End;
- EFI_STATUS Status;
-
- if (Supports == NULL && Resources == NULL) {
- return EFI_INVALID_PARAMETER;
- }
-
- Dev = NON_DISCOVERABLE_PCI_DEVICE_FROM_PCI_IO(This);
-
- Status = GetBarResource (Dev, BarIndex, &BarDesc);
- if (EFI_ERROR (Status)) {
- return Status;
- }
-
- //
- // Don't expose any configurable attributes for our emulated BAR
- //
- if (Supports != NULL) {
- *Supports = 0;
- }
-
- if (Resources != NULL) {
- Descriptor = AllocatePool (sizeof (EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR) +
- sizeof (EFI_ACPI_END_TAG_DESCRIPTOR));
- if (Descriptor == NULL) {
- return EFI_OUT_OF_RESOURCES;
- }
-
- CopyMem (Descriptor, BarDesc, sizeof *Descriptor);
-
- End = (EFI_ACPI_END_TAG_DESCRIPTOR *) (Descriptor + 1);
- End->Desc = ACPI_END_TAG_DESCRIPTOR;
- End->Checksum = 0;
-
- *Resources = Descriptor;
- }
- return EFI_SUCCESS;
-}
-
-/**
- Sets the attributes for a range of a BAR on a PCI controller.
-
- @param This A pointer to the EFI_PCI_IO_PROTOCOL instance.
- @param Attributes The mask of attributes to set for the resource range specified by
- BarIndex, Offset, and Length.
- @param BarIndex The BAR index of the standard PCI Configuration header to use as the
- base address for resource range. The legal range for this field is 0..5.
- @param Offset A pointer to the BAR relative base address of the resource range to be
- modified by the attributes specified by Attributes.
- @param Length A pointer to the length of the resource range to be modified by the
- attributes specified by Attributes.
-**/
-STATIC
-EFI_STATUS
-EFIAPI
-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;
-}
-
-STATIC CONST EFI_PCI_IO_PROTOCOL PciIoTemplate =
-{
- PciIoPollMem,
- PciIoPollIo,
- { PciIoMemRead, PciIoMemWrite },
- { PciIoIoRead, PciIoIoWrite },
- { PciIoPciRead, PciIoPciWrite },
- PciIoCopyMem,
- CoherentPciIoMap,
- CoherentPciIoUnmap,
- CoherentPciIoAllocateBuffer,
- CoherentPciIoFreeBuffer,
- PciIoFlush,
- PciIoGetLocation,
- PciIoAttributes,
- PciIoGetBarAttributes,
- PciIoSetBarAttributes,
- 0,
- 0
-};
-
-/**
- Initialize PciIo Protocol.
-
- @param Dev Point to NON_DISCOVERABLE_PCI_DEVICE instance.
-
-**/
-VOID
-InitializePciIoProtocol (
- NON_DISCOVERABLE_PCI_DEVICE *Dev
- )
-{
- EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR *Desc;
- INTN Idx;
-
- InitializeListHead (&Dev->UncachedAllocationList);
-
- Dev->ConfigSpace.Hdr.VendorId = PCI_ID_VENDOR_UNKNOWN;
- Dev->ConfigSpace.Hdr.DeviceId = PCI_ID_DEVICE_DONTCARE;
-
- // Copy protocol structure
- CopyMem(&Dev->PciIo, &PciIoTemplate, sizeof PciIoTemplate);
-
- if (Dev->Device->DmaType == NonDiscoverableDeviceDmaTypeNonCoherent) {
- Dev->PciIo.AllocateBuffer = NonCoherentPciIoAllocateBuffer;
- Dev->PciIo.FreeBuffer = NonCoherentPciIoFreeBuffer;
- Dev->PciIo.Map = NonCoherentPciIoMap;
- Dev->PciIo.Unmap = NonCoherentPciIoUnmap;
- }
-
- if (CompareGuid (Dev->Device->Type, &gEdkiiNonDiscoverableAhciDeviceGuid)) {
- Dev->ConfigSpace.Hdr.ClassCode[0] = PCI_IF_MASS_STORAGE_AHCI;
- Dev->ConfigSpace.Hdr.ClassCode[1] = PCI_CLASS_MASS_STORAGE_SATADPA;
- Dev->ConfigSpace.Hdr.ClassCode[2] = PCI_CLASS_MASS_STORAGE;
- Dev->BarOffset = 5;
- } else if (CompareGuid (Dev->Device->Type,
- &gEdkiiNonDiscoverableEhciDeviceGuid)) {
- Dev->ConfigSpace.Hdr.ClassCode[0] = PCI_IF_EHCI;
- Dev->ConfigSpace.Hdr.ClassCode[1] = PCI_CLASS_SERIAL_USB;
- Dev->ConfigSpace.Hdr.ClassCode[2] = PCI_CLASS_SERIAL;
- Dev->BarOffset = 0;
- } else if (CompareGuid (Dev->Device->Type,
- &gEdkiiNonDiscoverableNvmeDeviceGuid)) {
- Dev->ConfigSpace.Hdr.ClassCode[0] = 0x2; // PCI_IF_NVMHCI
- Dev->ConfigSpace.Hdr.ClassCode[1] = 0x8; // PCI_CLASS_MASS_STORAGE_NVM
- Dev->ConfigSpace.Hdr.ClassCode[2] = PCI_CLASS_MASS_STORAGE;
- Dev->BarOffset = 0;
- } else if (CompareGuid (Dev->Device->Type,
- &gEdkiiNonDiscoverableOhciDeviceGuid)) {
- Dev->ConfigSpace.Hdr.ClassCode[0] = PCI_IF_OHCI;
- Dev->ConfigSpace.Hdr.ClassCode[1] = PCI_CLASS_SERIAL_USB;
- Dev->ConfigSpace.Hdr.ClassCode[2] = PCI_CLASS_SERIAL;
- Dev->BarOffset = 0;
- } else if (CompareGuid (Dev->Device->Type,
- &gEdkiiNonDiscoverableSdhciDeviceGuid)) {
- Dev->ConfigSpace.Hdr.ClassCode[0] = 0x0; // don't care
- Dev->ConfigSpace.Hdr.ClassCode[1] = PCI_SUBCLASS_SD_HOST_CONTROLLER;
- Dev->ConfigSpace.Hdr.ClassCode[2] = PCI_CLASS_SYSTEM_PERIPHERAL;
- Dev->BarOffset = 0;
- } else if (CompareGuid (Dev->Device->Type,
- &gEdkiiNonDiscoverableXhciDeviceGuid)) {
- Dev->ConfigSpace.Hdr.ClassCode[0] = PCI_IF_XHCI;
- Dev->ConfigSpace.Hdr.ClassCode[1] = PCI_CLASS_SERIAL_USB;
- Dev->ConfigSpace.Hdr.ClassCode[2] = PCI_CLASS_SERIAL;
- Dev->BarOffset = 0;
- } else if (CompareGuid (Dev->Device->Type,
- &gEdkiiNonDiscoverableUhciDeviceGuid)) {
- Dev->ConfigSpace.Hdr.ClassCode[0] = PCI_IF_UHCI;
- Dev->ConfigSpace.Hdr.ClassCode[1] = PCI_CLASS_SERIAL_USB;
- Dev->ConfigSpace.Hdr.ClassCode[2] = PCI_CLASS_SERIAL;
- Dev->BarOffset = 0;
- } else if (CompareGuid (Dev->Device->Type,
- &gEdkiiNonDiscoverableUfsDeviceGuid)) {
- Dev->ConfigSpace.Hdr.ClassCode[0] = 0x0; // don't care
- Dev->ConfigSpace.Hdr.ClassCode[1] = 0x9; // UFS controller subclass;
- Dev->ConfigSpace.Hdr.ClassCode[2] = PCI_CLASS_MASS_STORAGE;
- Dev->BarOffset = 0;
- } else {
- ASSERT_EFI_ERROR (EFI_INVALID_PARAMETER);
- }
-
- //
- // Iterate over the resources to populate the virtual BARs
- //
- Idx = Dev->BarOffset;
- for (Desc = Dev->Device->Resources, Dev->BarCount = 0;
- Desc->Desc != ACPI_END_TAG_DESCRIPTOR;
- Desc = (VOID *)((UINT8 *)Desc + Desc->Len + 3)) {
-
- ASSERT (Desc->Desc == ACPI_ADDRESS_SPACE_DESCRIPTOR);
- ASSERT (Desc->ResType == ACPI_ADDRESS_SPACE_TYPE_MEM);
-
- if (Idx >= PCI_MAX_BARS ||
- (Idx == PCI_MAX_BARS - 1 && Desc->AddrSpaceGranularity == 64)) {
- DEBUG ((DEBUG_ERROR,
- "%a: resource count exceeds number of emulated BARs\n",
- __FUNCTION__));
- ASSERT (FALSE);
- break;
- }
-
- Dev->ConfigSpace.Device.Bar[Idx] = (UINT32)Desc->AddrRangeMin;
- Dev->BarCount++;
-
- if (Desc->AddrSpaceGranularity == 64) {
- Dev->ConfigSpace.Device.Bar[Idx] |= 0x4;
- Dev->ConfigSpace.Device.Bar[++Idx] = (UINT32)RShiftU64 (
- Desc->AddrRangeMin, 32);
- }
- }
-}
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