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/** @file
The Header file of the Pci Host Bridge Driver.
Copyright (c) 2015 - 2016, 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.
**/
#ifndef _PCI_HOST_BRIDGE_H_
#define _PCI_HOST_BRIDGE_H_
//
// Disable the warning since LIST_ENTRY was defined in EDKII
// and EFI_LIST_ENTRY was defined in PCI_HOST_BRIDGE_INSTANCE
//
#ifndef __GNUC__
#pragma warning(disable: 4133)
#endif
//
// Hard code the host bridge number in the platform.
// In this chipset, there is only one host bridge.
//
#define HOST_BRIDGE_NUMBER 1
#define PCI_HOST_BRIDGE_SIGNATURE SIGNATURE_32 ('e', 'h', 's', 't')
typedef struct {
UINTN Signature;
EFI_HANDLE HostBridgeHandle;
UINTN RootBridgeNumber;
LIST_ENTRY Head;
BOOLEAN ResourceSubmited;
BOOLEAN CanRestarted;
EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL ResAlloc;
} PCI_HOST_BRIDGE_INSTANCE;
#define INSTANCE_FROM_RESOURCE_ALLOCATION_THIS(a) CR (a, PCI_HOST_BRIDGE_INSTANCE, ResAlloc, PCI_HOST_BRIDGE_SIGNATURE)
//
// HostBridge Resource Allocation interface
//
/**
Enter a certain phase of the PCI enumeration process.
@param[in] This The EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL instance
@param[in] Phase The phase during enumeration.
@retval EFI_SUCCESS Succeed.
@retval EFI_INVALID_PARAMETER Wrong phase parameter passed in.
@retval EFI_NOT_READY Resources have not been submitted yet.
**/
EFI_STATUS
EFIAPI
NotifyPhase (
IN EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL *This,
IN EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PHASE Phase
);
/**
Return the device handle of the next PCI root bridge that is associated with
this Host Bridge.
@param[in] This The EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_ PROTOCOL instance
@param[in,out] RootBridgeHandle Returns the device handle of the next PCI Root Bridge.
On input, it holds the RootBridgeHandle returned by the most
recent call to GetNextRootBridge().The handle for the first
PCI Root Bridge is returned if RootBridgeHandle is NULL on input.
@retval EFI_SUCCESS Succeed.
@retval EFI_NOT_FOUND Next PCI root bridge not found.
@retval EFI_INVALID_PARAMETER Wrong parameter passed in.
**/
EFI_STATUS
EFIAPI
GetNextRootBridge (
IN EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL *This,
IN OUT EFI_HANDLE *RootBridgeHandle
);
/**
Returns the attributes of a PCI Root Bridge.
@param[in] This The EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_ PROTOCOL instance.
@param[in] RootBridgeHandle The device handle of the PCI Root Bridge.
that the caller is interested in
@param[out] Attributes The pointer to attributes of the PCI Root Bridge.
@retval EFI_SUCCESS Succeed.
@retval EFI_INVALID_PARAMETER Attributes parameter passed in is NULL or
RootBridgeHandle is not an EFI_HANDLE
that was returned on a previous call to
GetNextRootBridge().
**/
EFI_STATUS
EFIAPI
GetAttributes (
IN EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL *This,
IN EFI_HANDLE RootBridgeHandle,
OUT UINT64 *Attributes
);
/**
This is the request from the PCI enumerator to set up
the specified PCI Root Bridge for bus enumeration process.
@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_SUCCESS Succeed.
@retval EFI_OUT_OF_RESOURCES Not enough pool to be allocated.
@retval EFI_INVALID_PARAMETER RootBridgeHandle is not a valid handle.
**/
EFI_STATUS
EFIAPI
StartBusEnumeration (
IN EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL *This,
IN EFI_HANDLE RootBridgeHandle,
OUT VOID **Configuration
);
/**
This function programs the PCI Root Bridge hardware so that
it decodes the specified PCI bus range.
@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_SUCCESS Succeed.
@retval EFI_INVALID_PARAMETER Wrong parameters passed in.
**/
EFI_STATUS
EFIAPI
SetBusNumbers (
IN EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL *This,
IN EFI_HANDLE RootBridgeHandle,
IN VOID *Configuration
);
/**
Submits the I/O and memory resource requirements for the specified PCI Root Bridge.
@param[in] This 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 Succeed.
@retval EFI_INVALID_PARAMETER Wrong parameters passed in.
**/
EFI_STATUS
EFIAPI
SubmitResources (
IN EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL *This,
IN EFI_HANDLE RootBridgeHandle,
IN VOID *Configuration
);
/**
This function returns the proposed resource settings for the specified.
PCI Root Bridge.
@param[in] This The EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_ PROTOCOL instance.
@param[in] RootBridgeHandle The PCI Root Bridge handle.
@param[out] Configuration The pointer to the pointer to the PCI I/O.
and memory resource descriptor.
@retval EFI_SUCCESS Succeed.
@retval EFI_OUT_OF_RESOURCES Not enough pool to be allocated.
@retval EFI_INVALID_PARAMETER RootBridgeHandle is not a valid handle.
**/
EFI_STATUS
EFIAPI
GetProposedResources (
IN EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL *This,
IN EFI_HANDLE RootBridgeHandle,
OUT VOID **Configuration
);
/**
This function is called for all the PCI controllers that the PCI
bus driver finds. Can be used to Preprogram the controller.
@param[in] This The EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_ PROTOCOL instance.
@param[in] RootBridgeHandle The PCI Root Bridge handle.
@param[in] PciAddress Address of the controller on the PCI bus.
@param[in] Phase The Phase during resource allocation.
@retval EFI_SUCCESS Succeed.
@retval EFI_INVALID_PARAMETER RootBridgeHandle is not a valid handle.
**/
EFI_STATUS
EFIAPI
PreprocessController (
IN struct _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
);
/**
Calculate max memory of power 2.
@param[in] MemoryLength Input memory length.
@retval Returned Maximum length.
**/
UINT64
Power2MaxMemory (
IN UINT64 MemoryLength
);
#endif
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