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audk/PcAtChipsetPkg/PciHostBridgeDxe/PciHostBridge.c

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/** @file
Provides the basic interfaces to abstract a PCI Host Bridge Resource
Allocation
Copyright (c) 2008 - 2013, Intel Corporation. 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 "PciHostBridge.h"
//
// Hard code: Root Bridge Number within the host bridge
// Root Bridge's attribute
// Root Bridge's device path
// Root Bridge's resource aperture
//
UINTN RootBridgeNumber[1] = { 1 };
UINT64 RootBridgeAttribute[1][1] = {
{ EFI_PCI_HOST_BRIDGE_COMBINE_MEM_PMEM }
};
EFI_PCI_ROOT_BRIDGE_DEVICE_PATH mEfiPciRootBridgeDevicePath[1][1] = {
{
{
{
{
ACPI_DEVICE_PATH,
ACPI_DP,
{
(UINT8) (sizeof(ACPI_HID_DEVICE_PATH)),
(UINT8) ((sizeof(ACPI_HID_DEVICE_PATH)) >> 8)
}
},
EISA_PNP_ID(0x0A03),
0
},
{
END_DEVICE_PATH_TYPE,
END_ENTIRE_DEVICE_PATH_SUBTYPE,
{
END_DEVICE_PATH_LENGTH,
0
}
}
}
}
};
PCI_ROOT_BRIDGE_RESOURCE_APERTURE mResAperture[1][1] = {
{{0, 0xff, 0x80000000, 0xffffffff, 0, 0xffff}}
};
EFI_HANDLE mDriverImageHandle;
PCI_HOST_BRIDGE_INSTANCE mPciHostBridgeInstanceTemplate = {
PCI_HOST_BRIDGE_SIGNATURE, // Signature
NULL, // HostBridgeHandle
0, // RootBridgeNumber
{NULL, NULL}, // Head
FALSE, // ResourceSubiteed
TRUE, // CanRestarted
{
NotifyPhase,
GetNextRootBridge,
GetAttributes,
StartBusEnumeration,
SetBusNumbers,
SubmitResources,
GetProposedResources,
PreprocessController
}
};
//
// Implementation
//
/**
Entry point of this driver
@param ImageHandle Handle of driver image
@param SystemTable Point to EFI_SYSTEM_TABLE
@retval EFI_OUT_OF_RESOURCES Can not allocate memory resource
@retval EFI_DEVICE_ERROR Can not install the protocol instance
@retval EFI_SUCCESS Success to initialize the Pci host bridge.
**/
EFI_STATUS
EFIAPI
InitializePciHostBridge (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
{
EFI_STATUS Status;
UINTN Loop1;
UINTN Loop2;
PCI_HOST_BRIDGE_INSTANCE *HostBridge;
PCI_ROOT_BRIDGE_INSTANCE *PrivateData;
mDriverImageHandle = ImageHandle;
//
// Create Host Bridge Device Handle
//
for (Loop1 = 0; Loop1 < HOST_BRIDGE_NUMBER; Loop1++) {
HostBridge = AllocateCopyPool (sizeof(PCI_HOST_BRIDGE_INSTANCE),
&mPciHostBridgeInstanceTemplate);
if (HostBridge == NULL) {
return EFI_OUT_OF_RESOURCES;
}
HostBridge->RootBridgeNumber = RootBridgeNumber[Loop1];
InitializeListHead (&HostBridge->Head);
Status = gBS->InstallMultipleProtocolInterfaces (
&HostBridge->HostBridgeHandle,
&gEfiPciHostBridgeResourceAllocationProtocolGuid,
&HostBridge->ResAlloc,
NULL
);
if (EFI_ERROR (Status)) {
FreePool (HostBridge);
return EFI_DEVICE_ERROR;
}
//
// Create Root Bridge Device Handle in this Host Bridge
//
for (Loop2 = 0; Loop2 < HostBridge->RootBridgeNumber; Loop2++) {
PrivateData = AllocateZeroPool (sizeof(PCI_ROOT_BRIDGE_INSTANCE));
if (PrivateData == NULL) {
return EFI_OUT_OF_RESOURCES;
}
PrivateData->Signature = PCI_ROOT_BRIDGE_SIGNATURE;
PrivateData->DevicePath =
(EFI_DEVICE_PATH_PROTOCOL *)&mEfiPciRootBridgeDevicePath[Loop1][Loop2];
RootBridgeConstructor (
&PrivateData->Io,
HostBridge->HostBridgeHandle,
RootBridgeAttribute[Loop1][Loop2],
&mResAperture[Loop1][Loop2]
);
Status = gBS->InstallMultipleProtocolInterfaces(
&PrivateData->Handle,
&gEfiDevicePathProtocolGuid,
PrivateData->DevicePath,
&gEfiPciRootBridgeIoProtocolGuid,
&PrivateData->Io,
NULL
);
if (EFI_ERROR (Status)) {
FreePool(PrivateData);
return EFI_DEVICE_ERROR;
}
InsertTailList (&HostBridge->Head, &PrivateData->Link);
}
}
return EFI_SUCCESS;
}
/**
These are the notifications from the PCI bus driver that it is about to enter
a certain phase of the PCI enumeration process.
This member function can be used to notify the host bridge driver to perform
specific actions, including any chipset-specific initialization, so that the
chipset is ready to enter the next phase. Eight notification points are
defined at this time. See belows:
EfiPciHostBridgeBeginEnumeration Resets the host bridge PCI apertures
and internal data structures. The PCI
enumerator should issue this
notification before starting a fresh
enumeration process. Enumeration
cannot be restarted after sending any
other notification such as
EfiPciHostBridgeBeginBusAllocation.
EfiPciHostBridgeBeginBusAllocation The bus allocation phase is about to
begin. No specific action is required
here. This notification can be used to
perform any chipset-specific
programming.
EfiPciHostBridgeEndBusAllocation The bus allocation and bus programming
phase is complete. No specific action
is required here. This notification
can be used to perform any
chipset-specific programming.
EfiPciHostBridgeBeginResourceAllocation
The resource allocation phase is about
to begin. No specific action is
required here. This notification can
be used to perform any
chipset-specific programming.
EfiPciHostBridgeAllocateResources Allocates resources per previously
submitted requests for all the PCI
root bridges. These resource settings
are returned on the next call to
GetProposedResources(). Before calling
NotifyPhase() with a Phase of
EfiPciHostBridgeAllocateResource, the
PCI bus enumerator is responsible for
gathering I/O and memory requests for
all the PCI root bridges and
submitting these requests using
SubmitResources(). This function pads
the resource amount to suit the root
bridge hardware, takes care of
dependencies between the PCI root
bridges, and calls the Global
Coherency Domain (GCD) with the
allocation request. In the case of
padding, the allocated range could be
bigger than what was requested.
EfiPciHostBridgeSetResources Programs the host bridge hardware to
decode previously allocated resources
(proposed resources) for all the PCI
root bridges. After the hardware is
programmed, reassigning resources will
not be supported. The bus settings are
not affected.
EfiPciHostBridgeFreeResources Deallocates resources that were
previously allocated for all the PCI
root bridges and resets the I/O and
memory apertures to their initial
state. The bus settings are not
affected. If the request to allocate
resources fails, the PCI enumerator
can use this notification to
deallocate previous resources, adjust
the requests, and retry allocation.
EfiPciHostBridgeEndResourceAllocation The resource allocation phase is
completed. No specific action is
required here. This notification can
be used to perform any chipsetspecific
programming.
@param[in] This The instance pointer of
EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL
@param[in] Phase The phase during enumeration
@retval EFI_NOT_READY This phase cannot be entered at this time. For
example, this error is valid for a Phase of
EfiPciHostBridgeAllocateResources if
SubmitResources() has not been called for one
or more PCI root bridges before this call
@retval EFI_DEVICE_ERROR Programming failed due to a hardware error.
This error is valid for a Phase of
EfiPciHostBridgeSetResources.
@retval EFI_INVALID_PARAMETER Invalid phase parameter
@retval EFI_OUT_OF_RESOURCES The request could not be completed due to a
lack of resources. This error is valid for a
Phase of EfiPciHostBridgeAllocateResources if
the previously submitted resource requests
cannot be fulfilled or were only partially
fulfilled.
@retval EFI_SUCCESS The notification was accepted without any
errors.
**/
EFI_STATUS
EFIAPI
NotifyPhase(
IN EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL *This,
IN EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PHASE Phase
)
{
PCI_HOST_BRIDGE_INSTANCE *HostBridgeInstance;
PCI_ROOT_BRIDGE_INSTANCE *RootBridgeInstance;
PCI_RESOURCE_TYPE Index;
LIST_ENTRY *List;
EFI_PHYSICAL_ADDRESS BaseAddress;
UINT64 AddrLen;
UINTN BitsOfAlignment;
EFI_STATUS Status;
EFI_STATUS ReturnStatus;
HostBridgeInstance = INSTANCE_FROM_RESOURCE_ALLOCATION_THIS (This);
switch (Phase) {
case EfiPciHostBridgeBeginEnumeration:
if (HostBridgeInstance->CanRestarted) {
//
// Reset the Each Root Bridge
//
List = HostBridgeInstance->Head.ForwardLink;
while (List != &HostBridgeInstance->Head) {
RootBridgeInstance = DRIVER_INSTANCE_FROM_LIST_ENTRY (List);
for (Index = TypeIo; Index < TypeMax; Index++) {
RootBridgeInstance->ResAllocNode[Index].Type = Index;
RootBridgeInstance->ResAllocNode[Index].Base = 0;
RootBridgeInstance->ResAllocNode[Index].Length = 0;
RootBridgeInstance->ResAllocNode[Index].Status = ResNone;
}
List = List->ForwardLink;
}
HostBridgeInstance->ResourceSubmited = FALSE;
HostBridgeInstance->CanRestarted = TRUE;
} else {
//
// Can not restart
//
return EFI_NOT_READY;
}
break;
case EfiPciHostBridgeEndEnumeration:
break;
case EfiPciHostBridgeBeginBusAllocation:
//
// No specific action is required here, can perform any chipset specific
// programing
//
HostBridgeInstance->CanRestarted = FALSE;
break;
case EfiPciHostBridgeEndBusAllocation:
//
// No specific action is required here, can perform any chipset specific
// programing
//
//HostBridgeInstance->CanRestarted = FALSE;
break;
case EfiPciHostBridgeBeginResourceAllocation:
//
// No specific action is required here, can perform any chipset specific
// programing
//
//HostBridgeInstance->CanRestarted = FALSE;
break;
case EfiPciHostBridgeAllocateResources:
ReturnStatus = EFI_SUCCESS;
if (HostBridgeInstance->ResourceSubmited) {
//
// Take care of the resource dependencies between the root bridges
//
List = HostBridgeInstance->Head.ForwardLink;
while (List != &HostBridgeInstance->Head) {
RootBridgeInstance = DRIVER_INSTANCE_FROM_LIST_ENTRY (List);
for (Index = TypeIo; Index < TypeBus; Index++) {
if (RootBridgeInstance->ResAllocNode[Index].Status != ResNone) {
AddrLen = RootBridgeInstance->ResAllocNode[Index].Length;
//
// Get the number of '1' in Alignment.
//
BitsOfAlignment =
(UINTN)(HighBitSet64 (
RootBridgeInstance->ResAllocNode[Index].Alignment
) + 1);
switch (Index) {
case TypeIo:
//
// It is impossible for this chipset to align 0xFFFF for IO16
// So clear it
//
if (BitsOfAlignment >= 16) {
BitsOfAlignment = 0;
}
Status = gDS->AllocateIoSpace (
EfiGcdAllocateAnySearchBottomUp,
EfiGcdIoTypeIo,
BitsOfAlignment,
AddrLen,
&BaseAddress,
mDriverImageHandle,
NULL
);
if (!EFI_ERROR (Status)) {
RootBridgeInstance->ResAllocNode[Index].Base =
(UINTN)BaseAddress;
RootBridgeInstance->ResAllocNode[Index].Status =
ResAllocated;
} else {
ReturnStatus = Status;
if (Status != EFI_OUT_OF_RESOURCES) {
RootBridgeInstance->ResAllocNode[Index].Length = 0;
}
}
break;
case TypeMem32:
//
// It is impossible for this chipset to align 0xFFFFFFFF for
// Mem32
// So clear it
//
if (BitsOfAlignment >= 32) {
BitsOfAlignment = 0;
}
Status = gDS->AllocateMemorySpace (
EfiGcdAllocateAnySearchBottomUp,
EfiGcdMemoryTypeMemoryMappedIo,
BitsOfAlignment,
AddrLen,
&BaseAddress,
mDriverImageHandle,
NULL
);
if (!EFI_ERROR (Status)) {
// We were able to allocate the PCI memory
RootBridgeInstance->ResAllocNode[Index].Base =
(UINTN)BaseAddress;
RootBridgeInstance->ResAllocNode[Index].Status =
ResAllocated;
} else {
// Not able to allocate enough PCI memory
ReturnStatus = Status;
if (Status != EFI_OUT_OF_RESOURCES) {
RootBridgeInstance->ResAllocNode[Index].Length = 0;
}
ASSERT (FALSE);
}
break;
case TypePMem32:
case TypeMem64:
case TypePMem64:
ReturnStatus = EFI_ABORTED;
break;
default:
ASSERT (FALSE);
break;
}; //end switch
}
}
List = List->ForwardLink;
}
return ReturnStatus;
} else {
return EFI_NOT_READY;
}
break;
case EfiPciHostBridgeSetResources:
break;
case EfiPciHostBridgeFreeResources:
ReturnStatus = EFI_SUCCESS;
List = HostBridgeInstance->Head.ForwardLink;
while (List != &HostBridgeInstance->Head) {
RootBridgeInstance = DRIVER_INSTANCE_FROM_LIST_ENTRY (List);
for (Index = TypeIo; Index < TypeBus; Index++) {
if (RootBridgeInstance->ResAllocNode[Index].Status == ResAllocated) {
AddrLen = RootBridgeInstance->ResAllocNode[Index].Length;
BaseAddress = RootBridgeInstance->ResAllocNode[Index].Base;
switch (Index) {
case TypeIo:
Status = gDS->FreeIoSpace (BaseAddress, AddrLen);
if (EFI_ERROR (Status)) {
ReturnStatus = Status;
}
break;
case TypeMem32:
Status = gDS->FreeMemorySpace (BaseAddress, AddrLen);
if (EFI_ERROR (Status)) {
ReturnStatus = Status;
}
break;
case TypePMem32:
break;
case TypeMem64:
break;
case TypePMem64:
break;
default:
ASSERT (FALSE);
break;
}; //end switch
RootBridgeInstance->ResAllocNode[Index].Type = Index;
RootBridgeInstance->ResAllocNode[Index].Base = 0;
RootBridgeInstance->ResAllocNode[Index].Length = 0;
RootBridgeInstance->ResAllocNode[Index].Status = ResNone;
}
}
List = List->ForwardLink;
}
HostBridgeInstance->ResourceSubmited = FALSE;
HostBridgeInstance->CanRestarted = TRUE;
return ReturnStatus;
case EfiPciHostBridgeEndResourceAllocation:
HostBridgeInstance->CanRestarted = FALSE;
break;
default:
return EFI_INVALID_PARAMETER;
}
return EFI_SUCCESS;
}
/**
Return the device handle of the next PCI root bridge that is associated with
this Host Bridge.
This function is called multiple times to retrieve the device handles of all
the PCI root bridges that are associated with this PCI host bridge. Each PCI
host bridge is associated with one or more PCI root bridges. On each call,
the handle that was returned by the previous call is passed into the
interface, and on output the interface returns the device handle of the next
PCI root bridge. The caller can use the handle to obtain the instance of the
EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL for that root bridge. When there are no more
PCI root bridges to report, the interface returns EFI_NOT_FOUND. A PCI
enumerator must enumerate the PCI root bridges in the order that they are
returned by this function.
For D945 implementation, there is only one root bridge in PCI host bridge.
@param[in] This The instance pointer of
EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL
@param[in, out] RootBridgeHandle Returns the device handle of the next PCI
root bridge.
@retval EFI_SUCCESS If parameter RootBridgeHandle = NULL, then
return the first Rootbridge handle of the
specific Host bridge and return EFI_SUCCESS.
@retval EFI_NOT_FOUND Can not find the any more root bridge in
specific host bridge.
@retval EFI_INVALID_PARAMETER RootBridgeHandle is not an EFI_HANDLE that was
returned on a previous call to
GetNextRootBridge().
**/
EFI_STATUS
EFIAPI
GetNextRootBridge(
IN EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL *This,
IN OUT EFI_HANDLE *RootBridgeHandle
)
{
BOOLEAN NoRootBridge;
LIST_ENTRY *List;
PCI_HOST_BRIDGE_INSTANCE *HostBridgeInstance;
PCI_ROOT_BRIDGE_INSTANCE *RootBridgeInstance;
NoRootBridge = TRUE;
HostBridgeInstance = INSTANCE_FROM_RESOURCE_ALLOCATION_THIS (This);
List = HostBridgeInstance->Head.ForwardLink;
while (List != &HostBridgeInstance->Head) {
NoRootBridge = FALSE;
RootBridgeInstance = DRIVER_INSTANCE_FROM_LIST_ENTRY (List);
if (*RootBridgeHandle == NULL) {
//
// Return the first Root Bridge Handle of the Host Bridge
//
*RootBridgeHandle = RootBridgeInstance->Handle;
return EFI_SUCCESS;
} else {
if (*RootBridgeHandle == RootBridgeInstance->Handle) {
//
// Get next if have
//
List = List->ForwardLink;
if (List!=&HostBridgeInstance->Head) {
RootBridgeInstance = DRIVER_INSTANCE_FROM_LIST_ENTRY (List);
*RootBridgeHandle = RootBridgeInstance->Handle;
return EFI_SUCCESS;
} else {
return EFI_NOT_FOUND;
}
}
}
List = List->ForwardLink;
} //end while
if (NoRootBridge) {
return EFI_NOT_FOUND;
} else {
return EFI_INVALID_PARAMETER;
}
}
/**
Returns the allocation attributes of a PCI root bridge.
The function returns the allocation attributes of a specific PCI root bridge.
The attributes can vary from one PCI root bridge to another. These attributes
are different from the decode-related attributes that are returned by the
EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.GetAttributes() member function. The
RootBridgeHandle parameter is used to specify the instance of the PCI root
bridge. The device handles of all the root bridges that are associated with
this host bridge must be obtained by calling GetNextRootBridge(). The
attributes are static in the sense that they do not change during or after
the enumeration process. The hardware may provide mechanisms to change the
attributes on the fly, but such changes must be completed before
EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL is installed. The permitted
values of EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_ATTRIBUTES are defined in
"Related Definitions" below. The caller uses these attributes to combine
multiple resource requests.
For example, if the flag EFI_PCI_HOST_BRIDGE_COMBINE_MEM_PMEM is set, the PCI
bus enumerator needs to include requests for the prefetchable memory in the
nonprefetchable memory pool and not request any prefetchable memory.
Attribute Description
------------------------------------ ---------------------------------------
EFI_PCI_HOST_BRIDGE_COMBINE_MEM_PMEM If this bit is set, then the PCI root
bridge does not support separate
windows for nonprefetchable and
prefetchable memory. A PCI bus driver
needs to include requests for
prefetchable memory in the
nonprefetchable memory pool.
EFI_PCI_HOST_BRIDGE_MEM64_DECODE If this bit is set, then the PCI root
bridge supports 64-bit memory windows.
If this bit is not set, the PCI bus
driver needs to include requests for a
64-bit memory address in the
corresponding 32-bit memory pool.
@param[in] This The instance pointer of
EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL
@param[in] RootBridgeHandle The device handle of the PCI root bridge in
which the caller is interested. Type
EFI_HANDLE is defined in
InstallProtocolInterface() in the UEFI 2.0
Specification.
@param[out] Attributes The pointer to attribte of root bridge, it is
output parameter
@retval EFI_INVALID_PARAMETER Attribute pointer is NULL
@retval EFI_INVALID_PARAMETER RootBridgehandle is invalid.
@retval EFI_SUCCESS Success to get attribute of interested root
bridge.
**/
EFI_STATUS
EFIAPI
GetAttributes(
IN EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL *This,
IN EFI_HANDLE RootBridgeHandle,
OUT UINT64 *Attributes
)
{
LIST_ENTRY *List;
PCI_HOST_BRIDGE_INSTANCE *HostBridgeInstance;
PCI_ROOT_BRIDGE_INSTANCE *RootBridgeInstance;
if (Attributes == NULL) {
return EFI_INVALID_PARAMETER;
}
HostBridgeInstance = INSTANCE_FROM_RESOURCE_ALLOCATION_THIS (This);
List = HostBridgeInstance->Head.ForwardLink;
while (List != &HostBridgeInstance->Head) {
RootBridgeInstance = DRIVER_INSTANCE_FROM_LIST_ENTRY (List);
if (RootBridgeHandle == RootBridgeInstance->Handle) {
*Attributes = RootBridgeInstance->RootBridgeAttrib;
return EFI_SUCCESS;
}
List = List->ForwardLink;
}
//
// RootBridgeHandle is not an EFI_HANDLE
// that was returned on a previous call to GetNextRootBridge()
//
return EFI_INVALID_PARAMETER;
}
/**
Sets up the specified PCI root bridge for the bus enumeration process.
This member function sets up the root bridge for bus enumeration and returns
the PCI bus range over which the search should be performed in ACPI 2.0
resource descriptor format.
@param[in] This The
EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL
instance.
@param[in] RootBridgeHandle The PCI Root Bridge to be set up.
@param[out] Configuration Pointer to the pointer to the PCI bus resource
descriptor.
@retval EFI_INVALID_PARAMETER Invalid Root bridge's handle
@retval EFI_OUT_OF_RESOURCES Fail to allocate ACPI resource descriptor tag.
@retval EFI_SUCCESS Sucess to allocate ACPI resource descriptor.
**/
EFI_STATUS
EFIAPI
StartBusEnumeration(
IN EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL *This,
IN EFI_HANDLE RootBridgeHandle,
OUT VOID **Configuration
)
{
LIST_ENTRY *List;
PCI_HOST_BRIDGE_INSTANCE *HostBridgeInstance;
PCI_ROOT_BRIDGE_INSTANCE *RootBridgeInstance;
VOID *Buffer;
UINT8 *Temp;
UINT64 BusStart;
UINT64 BusEnd;
HostBridgeInstance = INSTANCE_FROM_RESOURCE_ALLOCATION_THIS (This);
List = HostBridgeInstance->Head.ForwardLink;
while (List != &HostBridgeInstance->Head) {
RootBridgeInstance = DRIVER_INSTANCE_FROM_LIST_ENTRY (List);
if (RootBridgeHandle == RootBridgeInstance->Handle) {
//
// Set up the Root Bridge for Bus Enumeration
//
BusStart = RootBridgeInstance->BusBase;
BusEnd = RootBridgeInstance->BusLimit;
//
// Program the Hardware(if needed) if error return EFI_DEVICE_ERROR
//
Buffer = AllocatePool (
sizeof(EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR) +
sizeof(EFI_ACPI_END_TAG_DESCRIPTOR)
);
if (Buffer == NULL) {
return EFI_OUT_OF_RESOURCES;
}
Temp = (UINT8 *)Buffer;
((EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR *)Temp)->Desc = 0x8A;
((EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR *)Temp)->Len = 0x2B;
((EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR *)Temp)->ResType = 2;
((EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR *)Temp)->GenFlag = 0;
((EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR *)Temp)->SpecificFlag = 0;
((EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR *)Temp)->AddrSpaceGranularity = 0;
((EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR *)Temp)->AddrRangeMin = BusStart;
((EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR *)Temp)->AddrRangeMax = 0;
((EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR *)Temp)->AddrTranslationOffset = 0;
((EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR *)Temp)->AddrLen =
BusEnd - BusStart + 1;
Temp = Temp + sizeof(EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR);
((EFI_ACPI_END_TAG_DESCRIPTOR *)Temp)->Desc = 0x79;
((EFI_ACPI_END_TAG_DESCRIPTOR *)Temp)->Checksum = 0x0;
*Configuration = Buffer;
return EFI_SUCCESS;
}
List = List->ForwardLink;
}
return EFI_INVALID_PARAMETER;
}
/**
Programs the PCI root bridge hardware so that it decodes the specified PCI
bus range.
This member function programs the specified PCI root bridge to decode the bus
range that is specified by the input parameter Configuration.
The bus range information is specified in terms of the ACPI 2.0 resource
descriptor format.
@param[in] This The
EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL
instance
@param[in] RootBridgeHandle The PCI Root Bridge whose bus range is to be
programmed
@param[in] Configuration The pointer to the PCI bus resource descriptor
@retval EFI_INVALID_PARAMETER RootBridgeHandle is not a valid root bridge
handle.
@retval EFI_INVALID_PARAMETER Configuration is NULL.
@retval EFI_INVALID_PARAMETER Configuration does not point to a valid ACPI
2.0 resource descriptor.
@retval EFI_INVALID_PARAMETER Configuration does not include a valid ACPI
2.0 bus resource descriptor.
@retval EFI_INVALID_PARAMETER Configuration includes valid ACPI 2.0 resource
descriptors other than bus descriptors.
@retval EFI_INVALID_PARAMETER Configuration contains one or more invalid
ACPI resource descriptors.
@retval EFI_INVALID_PARAMETER "Address Range Minimum" is invalid for this
root bridge.
@retval EFI_INVALID_PARAMETER "Address Range Length" is invalid for this
root bridge.
@retval EFI_DEVICE_ERROR Programming failed due to a hardware error.
@retval EFI_SUCCESS The bus range for the PCI root bridge was
programmed.
**/
EFI_STATUS
EFIAPI
SetBusNumbers(
IN EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL *This,
IN EFI_HANDLE RootBridgeHandle,
IN VOID *Configuration
)
{
LIST_ENTRY *List;
PCI_HOST_BRIDGE_INSTANCE *HostBridgeInstance;
PCI_ROOT_BRIDGE_INSTANCE *RootBridgeInstance;
UINT8 *Ptr;
UINTN BusStart;
UINTN BusEnd;
UINTN BusLen;
if (Configuration == NULL) {
return EFI_INVALID_PARAMETER;
}
Ptr = Configuration;
//
// Check the Configuration is valid
//
if(*Ptr != ACPI_ADDRESS_SPACE_DESCRIPTOR) {
return EFI_INVALID_PARAMETER;
}
if (((EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR *)Ptr)->ResType != 2) {
return EFI_INVALID_PARAMETER;
}
Ptr += sizeof(EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR);
if (*Ptr != ACPI_END_TAG_DESCRIPTOR) {
return EFI_INVALID_PARAMETER;
}
HostBridgeInstance = INSTANCE_FROM_RESOURCE_ALLOCATION_THIS (This);
List = HostBridgeInstance->Head.ForwardLink;
Ptr = Configuration;
while (List != &HostBridgeInstance->Head) {
RootBridgeInstance = DRIVER_INSTANCE_FROM_LIST_ENTRY (List);
if (RootBridgeHandle == RootBridgeInstance->Handle) {
EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR *Desc;
Desc = (EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR *)Ptr;
BusStart = (UINTN)Desc->AddrRangeMin;
BusLen = (UINTN)Desc->AddrLen;
BusEnd = BusStart + BusLen - 1;
if (BusStart > BusEnd) {
return EFI_INVALID_PARAMETER;
}
if ((BusStart < RootBridgeInstance->BusBase) ||
(BusEnd > RootBridgeInstance->BusLimit)) {
return EFI_INVALID_PARAMETER;
}
//
// Update the Bus Range
//
RootBridgeInstance->ResAllocNode[TypeBus].Base = BusStart;
RootBridgeInstance->ResAllocNode[TypeBus].Length = BusLen;
RootBridgeInstance->ResAllocNode[TypeBus].Status = ResAllocated;
//
// Program the Root Bridge Hardware
//
return EFI_SUCCESS;
}
List = List->ForwardLink;
}
return EFI_INVALID_PARAMETER;
}
/**
Submits the I/O and memory resource requirements for the specified PCI root
bridge.
This function is used to submit all the I/O and memory resources that are
required by the specified PCI root bridge. The input parameter Configuration
is used to specify the following:
- The various types of resources that are required
- The associated lengths in terms of ACPI 2.0 resource descriptor format
@param[in] This Pointer to the
EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL
instance.
@param[in] RootBridgeHandle The PCI root bridge whose I/O and memory
resource requirements are being submitted.
@param[in] Configuration The pointer to the PCI I/O and PCI memory
resource descriptor.
@retval EFI_SUCCESS The I/O and memory resource requests for a PCI
root bridge were accepted.
@retval EFI_INVALID_PARAMETER RootBridgeHandle is not a valid root bridge
handle.
@retval EFI_INVALID_PARAMETER Configuration is NULL.
@retval EFI_INVALID_PARAMETER Configuration does not point to a valid ACPI
2.0 resource descriptor.
@retval EFI_INVALID_PARAMETER Configuration includes requests for one or
more resource types that are not supported by
this PCI root bridge. This error will happen
if the caller did not combine resources
according to Attributes that were returned by
GetAllocAttributes().
@retval EFI_INVALID_PARAMETER Address Range Maximum" is invalid.
@retval EFI_INVALID_PARAMETER "Address Range Length" is invalid for this PCI
root bridge.
@retval EFI_INVALID_PARAMETER "Address Space Granularity" is invalid for
this PCI root bridge.
**/
EFI_STATUS
EFIAPI
SubmitResources(
IN EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL *This,
IN EFI_HANDLE RootBridgeHandle,
IN VOID *Configuration
)
{
LIST_ENTRY *List;
PCI_HOST_BRIDGE_INSTANCE *HostBridgeInstance;
PCI_ROOT_BRIDGE_INSTANCE *RootBridgeInstance;
UINT8 *Temp;
EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR *Ptr;
UINT64 AddrLen;
UINT64 Alignment;
//
// Check the input parameter: Configuration
//
if (Configuration == NULL) {
return EFI_INVALID_PARAMETER;
}
HostBridgeInstance = INSTANCE_FROM_RESOURCE_ALLOCATION_THIS (This);
List = HostBridgeInstance->Head.ForwardLink;
Temp = (UINT8 *)Configuration;
while ( *Temp == 0x8A) {
Temp += sizeof (EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR) ;
}
if (*Temp != 0x79) {
return EFI_INVALID_PARAMETER;
}
Temp = (UINT8 *)Configuration;
while (List != &HostBridgeInstance->Head) {
RootBridgeInstance = DRIVER_INSTANCE_FROM_LIST_ENTRY (List);
if (RootBridgeHandle == RootBridgeInstance->Handle) {
while ( *Temp == 0x8A) {
Ptr = (EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR *) Temp ;
//
// Check Address Length
//
if (Ptr->AddrLen > 0xffffffff) {
return EFI_INVALID_PARAMETER;
}
//
// Check address range alignment
//
if (Ptr->AddrRangeMax >= 0xffffffff ||
Ptr->AddrRangeMax != (GetPowerOfTwo64 (
Ptr->AddrRangeMax + 1) - 1)) {
return EFI_INVALID_PARAMETER;
}
switch (Ptr->ResType) {
case 0:
//
// Check invalid Address Sapce Granularity
//
if (Ptr->AddrSpaceGranularity != 32) {
return EFI_INVALID_PARAMETER;
}
//
// check the memory resource request is supported by PCI root bridge
//
if (RootBridgeInstance->RootBridgeAttrib ==
EFI_PCI_HOST_BRIDGE_COMBINE_MEM_PMEM &&
Ptr->SpecificFlag == 0x06) {
return EFI_INVALID_PARAMETER;
}
AddrLen = Ptr->AddrLen;
Alignment = Ptr->AddrRangeMax;
if (Ptr->AddrSpaceGranularity == 32) {
if (Ptr->SpecificFlag == 0x06) {
//
// Apply from GCD
//
RootBridgeInstance->ResAllocNode[TypePMem32].Status =
ResSubmitted;
} else {
RootBridgeInstance->ResAllocNode[TypeMem32].Length = AddrLen;
RootBridgeInstance->ResAllocNode[TypeMem32].Alignment =
Alignment;
RootBridgeInstance->ResAllocNode[TypeMem32].Status =
ResRequested;
HostBridgeInstance->ResourceSubmited = TRUE;
}
}
if (Ptr->AddrSpaceGranularity == 64) {
if (Ptr->SpecificFlag == 0x06) {
RootBridgeInstance->ResAllocNode[TypePMem64].Status =
ResSubmitted;
} else {
RootBridgeInstance->ResAllocNode[TypeMem64].Status =
ResSubmitted;
}
}
break;
case 1:
AddrLen = (UINTN) Ptr->AddrLen;
Alignment = (UINTN) Ptr->AddrRangeMax;
RootBridgeInstance->ResAllocNode[TypeIo].Length = AddrLen;
RootBridgeInstance->ResAllocNode[TypeIo].Alignment = Alignment;
RootBridgeInstance->ResAllocNode[TypeIo].Status = ResRequested;
HostBridgeInstance->ResourceSubmited = TRUE;
break;
default:
break;
};
Temp += sizeof (EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR) ;
}
return EFI_SUCCESS;
}
List = List->ForwardLink;
}
return EFI_INVALID_PARAMETER;
}
/**
Returns the proposed resource settings for the specified PCI root bridge.
This member function returns the proposed resource settings for the
specified PCI root bridge. The proposed resource settings are prepared when
NotifyPhase() is called with a Phase of EfiPciHostBridgeAllocateResources.
The output parameter Configuration specifies the following:
- The various types of resources, excluding bus resources, that are
allocated
- The associated lengths in terms of ACPI 2.0 resource descriptor format
@param[in] This Pointer to the
EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL
instance.
@param[in] RootBridgeHandle The PCI root bridge handle. Type EFI_HANDLE is
defined in InstallProtocolInterface() in the
UEFI 2.0 Specification.
@param[out] Configuration The pointer to the pointer to the PCI I/O and
memory resource descriptor.
@retval EFI_SUCCESS The requested parameters were returned.
@retval EFI_INVALID_PARAMETER RootBridgeHandle is not a valid root bridge
handle.
@retval EFI_DEVICE_ERROR Programming failed due to a hardware error.
@retval EFI_OUT_OF_RESOURCES The request could not be completed due to a
lack of resources.
**/
EFI_STATUS
EFIAPI
GetProposedResources(
IN EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL *This,
IN EFI_HANDLE RootBridgeHandle,
OUT VOID **Configuration
)
{
LIST_ENTRY *List;
PCI_HOST_BRIDGE_INSTANCE *HostBridgeInstance;
PCI_ROOT_BRIDGE_INSTANCE *RootBridgeInstance;
UINTN Index;
UINTN Number;
VOID *Buffer;
UINT8 *Temp;
EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR *Ptr;
UINT64 ResStatus;
Buffer = NULL;
Number = 0;
//
// Get the Host Bridge Instance from the resource allocation protocol
//
HostBridgeInstance = INSTANCE_FROM_RESOURCE_ALLOCATION_THIS (This);
List = HostBridgeInstance->Head.ForwardLink;
//
// Enumerate the root bridges in this host bridge
//
while (List != &HostBridgeInstance->Head) {
RootBridgeInstance = DRIVER_INSTANCE_FROM_LIST_ENTRY (List);
if (RootBridgeHandle == RootBridgeInstance->Handle) {
for (Index = 0; Index < TypeBus; Index ++) {
if (RootBridgeInstance->ResAllocNode[Index].Status != ResNone) {
Number ++;
}
}
if (Number == 0) {
return EFI_INVALID_PARAMETER;
}
Buffer = AllocateZeroPool (
Number * sizeof(EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR) +
sizeof(EFI_ACPI_END_TAG_DESCRIPTOR)
);
if (Buffer == NULL) {
return EFI_OUT_OF_RESOURCES;
}
Temp = Buffer;
for (Index = 0; Index < TypeBus; Index ++) {
if (RootBridgeInstance->ResAllocNode[Index].Status != ResNone) {
Ptr = (EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR *) Temp ;
ResStatus = RootBridgeInstance->ResAllocNode[Index].Status;
switch (Index) {
case TypeIo:
//
// Io
//
Ptr->Desc = 0x8A;
Ptr->Len = 0x2B;
Ptr->ResType = 1;
Ptr->GenFlag = 0;
Ptr->SpecificFlag = 0;
Ptr->AddrRangeMin = RootBridgeInstance->ResAllocNode[Index].Base;
Ptr->AddrRangeMax = 0;
Ptr->AddrTranslationOffset = (ResStatus == ResAllocated) ?
EFI_RESOURCE_SATISFIED :
EFI_RESOURCE_LESS;
Ptr->AddrLen = RootBridgeInstance->ResAllocNode[Index].Length;
break;
case TypeMem32:
//
// Memory 32
//
Ptr->Desc = 0x8A;
Ptr->Len = 0x2B;
Ptr->ResType = 0;
Ptr->GenFlag = 0;
Ptr->SpecificFlag = 0;
Ptr->AddrSpaceGranularity = 32;
Ptr->AddrRangeMin = RootBridgeInstance->ResAllocNode[Index].Base;
Ptr->AddrRangeMax = 0;
Ptr->AddrTranslationOffset = (ResStatus == ResAllocated) ?
EFI_RESOURCE_SATISFIED :
EFI_RESOURCE_LESS;
Ptr->AddrLen = RootBridgeInstance->ResAllocNode[Index].Length;
break;
case TypePMem32:
//
// Prefetch memory 32
//
Ptr->Desc = 0x8A;
Ptr->Len = 0x2B;
Ptr->ResType = 0;
Ptr->GenFlag = 0;
Ptr->SpecificFlag = 6;
Ptr->AddrSpaceGranularity = 32;
Ptr->AddrRangeMin = 0;
Ptr->AddrRangeMax = 0;
Ptr->AddrTranslationOffset = EFI_RESOURCE_NONEXISTENT;
Ptr->AddrLen = 0;
break;
case TypeMem64:
//
// Memory 64
//
Ptr->Desc = 0x8A;
Ptr->Len = 0x2B;
Ptr->ResType = 0;
Ptr->GenFlag = 0;
Ptr->SpecificFlag = 0;
Ptr->AddrSpaceGranularity = 64;
Ptr->AddrRangeMin = 0;
Ptr->AddrRangeMax = 0;
Ptr->AddrTranslationOffset = EFI_RESOURCE_NONEXISTENT;
Ptr->AddrLen = 0;
break;
case TypePMem64:
//
// Prefetch memory 64
//
Ptr->Desc = 0x8A;
Ptr->Len = 0x2B;
Ptr->ResType = 0;
Ptr->GenFlag = 0;
Ptr->SpecificFlag = 6;
Ptr->AddrSpaceGranularity = 64;
Ptr->AddrRangeMin = 0;
Ptr->AddrRangeMax = 0;
Ptr->AddrTranslationOffset = EFI_RESOURCE_NONEXISTENT;
Ptr->AddrLen = 0;
break;
};
Temp += sizeof (EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR);
}
}
((EFI_ACPI_END_TAG_DESCRIPTOR *)Temp)->Desc = 0x79;
((EFI_ACPI_END_TAG_DESCRIPTOR *)Temp)->Checksum = 0x0;
*Configuration = Buffer;
return EFI_SUCCESS;
}
List = List->ForwardLink;
}
return EFI_INVALID_PARAMETER;
}
/**
Provides the hooks from the PCI bus driver to every PCI controller
(device/function) at various stages of the PCI enumeration process that allow
the host bridge driver to preinitialize individual PCI controllers before
enumeration.
This function is called during the PCI enumeration process. No specific
action is expected from this member function. It allows the host bridge
driver to preinitialize individual PCI controllers before enumeration.
@param This Pointer to the
EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL
instance.
@param RootBridgeHandle The associated PCI root bridge handle. Type
EFI_HANDLE is defined in InstallProtocolInterface()
in the UEFI 2.0 Specification.
@param PciAddress The address of the PCI device on the PCI bus. This
address can be passed to the
EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL member functions to
access the PCI configuration space of the device.
See Table 12-1 in the UEFI 2.0 Specification for the
definition of
EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_PCI_ADDRESS.
@param Phase The phase of the PCI device enumeration.
@retval EFI_SUCCESS The requested parameters were returned.
@retval EFI_INVALID_PARAMETER RootBridgeHandle is not a valid root bridge
handle.
@retval EFI_INVALID_PARAMETER Phase is not a valid phase that is defined
in
EFI_PCI_CONTROLLER_RESOURCE_ALLOCATION_PHASE.
@retval EFI_DEVICE_ERROR Programming failed due to a hardware error.
The PCI enumerator should not enumerate this
device, including its child devices if it is
a PCI-to-PCI bridge.
**/
EFI_STATUS
EFIAPI
PreprocessController (
IN EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL *This,
IN EFI_HANDLE RootBridgeHandle,
IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_PCI_ADDRESS PciAddress,
IN EFI_PCI_CONTROLLER_RESOURCE_ALLOCATION_PHASE Phase
)
{
PCI_HOST_BRIDGE_INSTANCE *HostBridgeInstance;
PCI_ROOT_BRIDGE_INSTANCE *RootBridgeInstance;
LIST_ENTRY *List;
HostBridgeInstance = INSTANCE_FROM_RESOURCE_ALLOCATION_THIS (This);
List = HostBridgeInstance->Head.ForwardLink;
//
// Enumerate the root bridges in this host bridge
//
while (List != &HostBridgeInstance->Head) {
RootBridgeInstance = DRIVER_INSTANCE_FROM_LIST_ENTRY (List);
if (RootBridgeHandle == RootBridgeInstance->Handle) {
break;
}
List = List->ForwardLink;
}
if (List == &HostBridgeInstance->Head) {
return EFI_INVALID_PARAMETER;
}
if ((UINT32)Phase > EfiPciBeforeResourceCollection) {
return EFI_INVALID_PARAMETER;
}
return EFI_SUCCESS;
}
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