path: root/EDK/Foundation/Framework/Protocol/PciHostBridgeResourceAllocation/PciHostBridgeResourceAllocation.h

/*++

Copyright (c) 2004, Intel Corporation                                                         
All rights reserved. This program and the accompanying materials                          
are licensed and made available under the terms and conditions of the BSD License         
which accompanies this distribution.  The full text of the license may be found at        
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.             

Module Name:

  PciHostBridgeResourceAllocation.h

Abstract:


--*/

#ifndef _PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_H_
#define _PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_H_

#include "Tiano.h"
#include EFI_PROTOCOL_DEFINITION(PciRootBridgeIo)


#define EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL_GUID \
  { 0xCF8034BE,0x6768,0x4d8b,0xB7,0x39,0x7C,0xCE,0x68,0x3A,0x9F,0xBE }


EFI_FORWARD_DECLARATION (EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL);


//
// EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_ATTRIBUTES
//

// If this bit is set, then the PCI Root Bridge does not 
// support separate windows for Non-prefetchable and Prefetchable 
// memory. A PCI bus driver needs to include requests for Prefetchable 
// memory in the Non-prefetchable memory pool.
//
#define EFI_PCI_HOST_BRIDGE_COMBINE_MEM_PMEM  1

//
// 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 64 bit 
// memory address in the corresponding 32 bit memory pool. 
//
#define EFI_PCI_HOST_BRIDGE_MEM64_DECODE   2


//
// EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PHASE
//
typedef enum {
  EfiPciHostBridgeBeginEnumeration,
  EfiPciHostBridgeBeginBusAllocation,
  EfiPciHostBridgeEndBusAllocation,
  EfiPciHostBridgeBeginResourceAllocation,
  EfiPciHostBridgeAllocateResources,
  EfiPciHostBridgeSetResources,
  EfiPciHostBridgeFreeResources,
  EfiPciHostBridgeEndResourceAllocation
} EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PHASE;

//
// EfiPciHostBridgeBeginEnumeration
// Reset the host bridge PCI apertures and internal data structures. 
// PCI enumerator should issue this notification before starting 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
// Allocate resources per previously submitted requests for all the PCI Root 
// Bridges. These resource settings are returned on the next call to 
// GetProposedResources(). 
//
// EfiPciHostBridgeSetResources
// Program the Host Bridge hardware to decode previously allocated resources
// (proposed resources) for all the PCI Root Bridges. 
//
// EfiPciHostBridgeFreeResources
// De-allocate previously allocated resources previously for all the PCI 
// Root Bridges and reset the I/O and memory apertures to initial state. 
//
// EfiPciHostBridgeEndResourceAllocation
// The resource allocation phase is completed.  No specific action is required 
// here. This notification can be used to perform any chipset specific programming. 



//
// EFI_PCI_CONTROLLER_RESOURCE_ALLOCATION_PHASE
//
typedef enum {
  EfiPciBeforeChildBusEnumeration,        
  EfiPciBeforeResourceCollection
} EFI_PCI_CONTROLLER_RESOURCE_ALLOCATION_PHASE;

//
// EfiPciBeforeChildBusEnumeration
// This notification is only applicable to PCI-PCI bridges and 
// indicates that the PCI enumerator is about to begin enumerating 
// the bus behind the PCI-PCI Bridge. This notification is sent after 
// the primary bus number, the secondary bus number and the subordinate 
// bus number registers in the PCI-PCI Bridge are programmed to valid 
// (not necessary final) values
//
// EfiPciBeforeResourceCollection
// This notification is sent before the PCI enumerator probes BAR registers 
// for every valid PCI function.
//


typedef
EFI_STATUS
(EFIAPI *EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL_NOTIFY_PHASE) (
  IN EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL *This,
  IN EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PHASE            Phase
  );
/*++

Routine Description:
  Enter a certain phase of the PCI enumeration process

Arguments:
  This  -- The EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL instance
  Phase -- The phase during enumeration
    
Returns:
  EFI_SUCCESS - Success
  EFI_OUT_OF_RESOURCES - If SubmitResources ( ) could not allocate resources
  EFI_NOT_READY        - This phase cannot be entered at this time
  EFI_DEVICE_ERROR     - SetResources failed due to HW error.

--*/  

  
typedef
EFI_STATUS
(EFIAPI *EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL_GET_NEXT_ROOT_BRIDGE) (
  IN EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL  *This,
  IN OUT EFI_HANDLE                                       *RootBridgeHandle
  );
/*++

Routine Description:
  Return the device handle of the next PCI root bridge that is associated with 
  this Host Bridge

Arguments:
  This -- The EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_ PROTOCOL instance
  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
    
Returns:
  EFI_SUCCESS - Success
  EFI_INVALID_PARAMETER - RootBridgeHandle is invalid

--*/  


typedef
EFI_STATUS
(EFIAPI * EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL_GET_ATTRIBUTES) (
  IN EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL  *This,
  IN  EFI_HANDLE                                                RootBridgeHandle,
  OUT UINT64                                                    *Attributes
  );
/*++

Routine Description:
  Returns the attributes of a PCI Root Bridge.

Arguments:
  This -- The EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_ PROTOCOL instance
  RootBridgeHandle -- The device handle of the PCI Root Bridge 
                      that the caller is interested in
  Attribute -- The pointer to attributes of the PCI Root Bridge                    
    
Returns:
  EFI_SUCCESS - Success
  EFI_INVALID_PARAMETER - RootBridgeHandle is invalid
  EFI_INVALID_PARAMETER - Attributes is NULL

--*/    


typedef
EFI_STATUS
(EFIAPI *EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL_START_BUS_ENUMERATION) (
  IN EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL  *This,
  IN  EFI_HANDLE                                                RootBridgeHandle,
  OUT VOID                                                      **Configuration
  );
/*++

Routine Description:
  This is the request from the PCI enumerator to set up 
  the specified PCI Root Bridge for bus enumeration process. 

Arguments:
  This -- The EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_ PROTOCOL instance
  RootBridgeHandle -- The PCI Root Bridge to be set up
  Configuration -- Pointer to the pointer to the PCI bus resource descriptor
    
Returns:
  EFI_SUCCESS - Success
  EFI_INVALID_PARAMETER - RootBridgeHandle is invalid
  EFI_DEVICE_ERROR      - Request failed due to hardware error
  EFI_OUT_OF_RESOURCES  - Request failed due to lack of resources
--*/

  
typedef
EFI_STATUS
(EFIAPI *EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL_SET_BUS_NUMBERS) (
  IN EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL  *This,
  IN EFI_HANDLE                                                RootBridgeHandle,
  IN VOID                                                      *Configuration
  );
/*++

Routine Description:
  This function programs the PCI Root Bridge hardware so that 
  it decodes the specified PCI bus range

Arguments:
  This -- The EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_ PROTOCOL instance
  RootBridgeHandle -- The PCI Root Bridge whose bus range is to be programmed
  Configuration -- The pointer to the PCI bus resource descriptor
    
Returns:
  EFI_SUCCESS - Success
  EFI_INVALID_PARAMETER - RootBridgeHandle is invalid
  EFI_INVALID_PARAMETER - Configuration is NULL
  EFI_INVALID_PARAMETER - Configuration does not point to a valid ACPI resource descriptor
  EFI_INVALID_PARAMETER - Configuration contains one or more memory or IO ACPI resource descriptor
  EFI_INVALID_PARAMETER - Address Range Minimum or Address Range Length fields in Configuration 
                          are invalid for this Root Bridge.
  EFI_INVALID_PARAMETER - Configuration contains one or more invalid ACPI resource descriptor
  EFI_DEVICE_ERROR      - Request failed due to hardware error
  EFI_OUT_OF_RESOURCES  - Request failed due to lack of resources

--*/    


typedef
EFI_STATUS
(EFIAPI * EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL_SUBMIT_RESOURCES) (
  IN EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL  *This,
  IN EFI_HANDLE                                                RootBridgeHandle,
  IN VOID                                                      *Configuration
  );
/*++

Routine Description:
  Submits the I/O and memory resource requirements for the specified PCI Root Bridge
  
Arguments:
  This -- The EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_ PROTOCOL instance
  RootBridgeHandle -- The PCI Root Bridge whose I/O and memory resource requirements 
                      are being submitted
  Configuration -- The pointer to the PCI I/O and PCI memory resource descriptor                    
Returns:
  EFI_SUCCESS - Success
  EFI_INVALID_PARAMETER - RootBridgeHandle is invalid
  EFI_INVALID_PARAMETER - Configuration is NULL
  EFI_INVALID_PARAMETER - Configuration does not point to a valid ACPI resource descriptor
  EFI_INVALID_PARAMETER - Configuration includes a resource descriptor of unsupported type

--*/    


typedef
EFI_STATUS
(EFIAPI * EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL_GET_PROPOSED_RESOURCES) (
  IN EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL  *This,
  IN  EFI_HANDLE                                                RootBridgeHandle,
  OUT VOID                                                      **Configuration
  );
/*++

Routine Description:
  This function returns the proposed resource settings for the specified 
  PCI Root Bridge

Arguments:
  This -- The EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_ PROTOCOL instance
  RootBridgeHandle -- The PCI Root Bridge handle
  Configuration -- The pointer to the pointer to the PCI I/O 
                   and memory resource descriptor
    
Returns:
  EFI_SUCCESS - Success
  EFI_INVALID_PARAMETER - RootBridgeHandle is invalid
  EFI_DEVICE_ERROR      - Request failed due to hardware error
  EFI_OUT_OF_RESOURCES  - Request failed due to lack of resources

--*/    



typedef
EFI_STATUS
(EFIAPI * EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL_PREPROCESS_CONTROLLER) (
  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
  );
/*++

Routine Description:
  This function is called for all the PCI controllers that the PCI 
  bus driver finds. Can be used to Preprogram the controller.

Arguments:
  This -- The EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_ PROTOCOL instance
  RootBridgeHandle -- The PCI Root Bridge handle
  PciBusAddress -- Address of the controller on the PCI bus
  Phase         -- The Phase during resource allocation
    
Returns:
  EFI_SUCCESS - Success
  EFI_INVALID_PARAMETER - RootBridgeHandle is invalid
  EFI_DEVICE_ERROR      - Device pre-initialization failed due to hardware error.
--*/    



typedef struct _EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL {
  EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL_NOTIFY_PHASE           NotifyPhase;
  EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL_GET_NEXT_ROOT_BRIDGE   GetNextRootBridge;
  EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL_GET_ATTRIBUTES         GetAllocAttributes;
  EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL_START_BUS_ENUMERATION  StartBusEnumeration;
  EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL_SET_BUS_NUMBERS        SetBusNumbers;
  EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL_SUBMIT_RESOURCES       SubmitResources;
  EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL_GET_PROPOSED_RESOURCES GetProposedResources;
  EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL_PREPROCESS_CONTROLLER  PreprocessController;
} EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL;

extern EFI_GUID gEfiPciHostBridgeResourceAllocationProtocolGuid;

#endif