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423 lines
19 KiB
C
423 lines
19 KiB
C
/** @file
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This file declares PCI Host Bridge Resource Allocation Protocol which
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provides the basic interfaces to abstract a PCI host bridge resource allocation.
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This protocol is mandatory if the system includes PCI devices.
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Copyright (c) 2007 - 2018, Intel Corporation. All rights reserved.<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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@par Revision Reference:
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This Protocol is defined in UEFI Platform Initialization Specification 1.2
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Volume 5: Standards.
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**/
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#ifndef _PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_H_
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#define _PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_H_
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//
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// This file must be included because EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL
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// uses EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_PCI_ADDRESS
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//
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#include <Protocol/PciRootBridgeIo.h>
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///
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/// Global ID for the EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL.
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///
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#define EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL_GUID \
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{ \
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0xCF8034BE, 0x6768, 0x4d8b, {0xB7,0x39,0x7C,0xCE,0x68,0x3A,0x9F,0xBE } \
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}
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///
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/// Forward declaration for EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL.
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///
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typedef struct _EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL;
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/// If this bit is set, then the PCI Root Bridge does not
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/// support separate windows for Non-prefetchable and Prefetchable
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/// memory. A PCI bus driver needs to include requests for Prefetchable
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/// memory in the Non-prefetchable memory pool.
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///
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#define EFI_PCI_HOST_BRIDGE_COMBINE_MEM_PMEM 1
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///
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/// If this bit is set, then the PCI Root Bridge supports
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/// 64 bit memory windows. If this bit is not set,
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/// the PCI bus driver needs to include requests for 64 bit
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/// memory address in the corresponding 32 bit memory pool.
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///
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#define EFI_PCI_HOST_BRIDGE_MEM64_DECODE 2
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///
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/// A UINT64 value that contains the status of a PCI resource requested
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/// in the Configuration parameter returned by GetProposedResources()
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/// The legal values are EFI_RESOURCE_SATISFIED and EFI_RESOURCE_NOT_SATISFIED
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///
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typedef UINT64 EFI_RESOURCE_ALLOCATION_STATUS;
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///
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/// The request of this resource type could be fulfilled. Used in the
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/// Configuration parameter returned by GetProposedResources() to identify
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/// a PCI resources request that can be satisfied.
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///
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#define EFI_RESOURCE_SATISFIED 0x0000000000000000ULL
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///
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/// The request of this resource type could not be fulfilled for its
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/// absence in the host bridge resource pool. Used in the Configuration parameter
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/// returned by GetProposedResources() to identify a PCI resources request that
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/// can not be satisfied.
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///
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#define EFI_RESOURCE_NOT_SATISFIED 0xFFFFFFFFFFFFFFFFULL
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///
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/// This enum is used to specify the phase of the PCI enumaeration process.
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///
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typedef enum {
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///
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/// Reset the host bridge PCI apertures and internal data structures.
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/// PCI enumerator should issue this notification before starting fresh
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/// enumeration process. Enumeration cannot be restarted after sending
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/// any other notification such as EfiPciHostBridgeBeginBusAllocation.
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///
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EfiPciHostBridgeBeginEnumeration,
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///
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/// The bus allocation phase is about to begin. No specific action
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/// is required here. This notification can be used to perform any
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/// chipset specific programming.
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///
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EfiPciHostBridgeBeginBusAllocation,
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///
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/// The bus allocation and bus programming phase is complete. No specific
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/// action is required here. This notification can be used to perform any
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/// chipset specific programming.
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///
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EfiPciHostBridgeEndBusAllocation,
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///
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/// The resource allocation phase is about to begin.No specific action is
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/// required here. This notification can be used to perform any chipset specific programming.
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///
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EfiPciHostBridgeBeginResourceAllocation,
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///
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/// Allocate resources per previously submitted requests for all the PCI Root
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/// Bridges. These resource settings are returned on the next call to
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/// GetProposedResources().
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///
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EfiPciHostBridgeAllocateResources,
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///
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/// Program the Host Bridge hardware to decode previously allocated resources
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/// (proposed resources) for all the PCI Root Bridges.
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///
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EfiPciHostBridgeSetResources,
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///
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/// De-allocate previously allocated resources previously for all the PCI
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/// Root Bridges and reset the I/O and memory apertures to initial state.
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///
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EfiPciHostBridgeFreeResources,
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///
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/// The resource allocation phase is completed. No specific action is required
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/// here. This notification can be used to perform any chipset specific programming.
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///
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EfiPciHostBridgeEndResourceAllocation,
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///
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/// The Host Bridge Enumeration is completed. No specific action is required here.
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/// This notification can be used to perform any chipset specific programming.
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///
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EfiPciHostBridgeEndEnumeration,
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EfiMaxPciHostBridgeEnumerationPhase
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} EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PHASE;
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///
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/// Definitions of 2 notification points.
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///
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typedef enum {
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///
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/// This notification is only applicable to PCI-PCI bridges and
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/// indicates that the PCI enumerator is about to begin enumerating
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/// the bus behind the PCI-PCI Bridge. This notification is sent after
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/// the primary bus number, the secondary bus number and the subordinate
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/// bus number registers in the PCI-PCI Bridge are programmed to valid
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/// (not necessary final) values
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///
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EfiPciBeforeChildBusEnumeration,
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///
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/// This notification is sent before the PCI enumerator probes BAR registers
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/// for every valid PCI function.
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///
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EfiPciBeforeResourceCollection
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} EFI_PCI_CONTROLLER_RESOURCE_ALLOCATION_PHASE;
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/**
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These are the notifications from the PCI bus driver that it is about to enter a certain phase of the PCI
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enumeration process.
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@param[in] This The pointer to the EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL
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instance.
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@param[in] Phase The phase during enumeration.
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@retval EFI_SUCCESS The notification was accepted without any errors.
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@retval EFI_INVALID_PARAMETER The Phase is invalid.
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@retval EFI_NOT_READY This phase cannot be entered at this time. For example, this error
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is valid for a Phase of EfiPciHostBridgeAllocateResources if
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SubmitResources() has not been called for one or more
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PCI root bridges before this call.
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@retval EFI_DEVICE_ERROR Programming failed due to a hardware error. This error is valid for
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a Phase of EfiPciHostBridgeSetResources.
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@retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of resources.
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This error is valid for a Phase of EfiPciHostBridgeAllocateResources
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if the previously submitted resource requests cannot be fulfilled or were only
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partially fulfilled
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL_NOTIFY_PHASE)(
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IN EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL *This,
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IN EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PHASE Phase
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);
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/**
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Returns the device handle of the next PCI root bridge that is associated with this host bridge.
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@param[in] This The pointer to the EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL
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instance.
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@param[in,out] RootBridgeHandle Returns the device handle of the next PCI root bridge. On input, it holds the
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RootBridgeHandle that was returned by the most recent call to
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GetNextRootBridge(). If RootBridgeHandle is NULL on input, the handle
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for the first PCI root bridge is returned.
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@retval EFI_SUCCESS The requested attribute information was returned.
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@retval EFI_INVALID_PARAMETER RootBridgeHandle is not an EFI_HANDLE that was returned
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on a previous call to GetNextRootBridge().
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@retval EFI_NOT_FOUND There are no more PCI root bridge device handles.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL_GET_NEXT_ROOT_BRIDGE)(
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IN EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL *This,
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IN OUT EFI_HANDLE *RootBridgeHandle
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);
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/**
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Returns the allocation attributes of a PCI root bridge.
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@param[in] This The pointer to the EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL
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instance.
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@param[in] RootBridgeHandle The device handle of the PCI root bridge in which the caller is interested.
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@param[out] Attribute The pointer to attributes of the PCI root bridge.
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@retval EFI_SUCCESS The requested attribute information was returned.
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@retval EFI_INVALID_PARAMETER RootBridgeHandle is not a valid root bridge handle.
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@retval EFI_INVALID_PARAMETER Attributes is NULL.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL_GET_ATTRIBUTES)(
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IN EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL *This,
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IN EFI_HANDLE RootBridgeHandle,
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OUT UINT64 *Attributes
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);
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/**
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Sets up the specified PCI root bridge for the bus enumeration process.
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@param[in] This The pointer to the EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL
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instance.
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@param[in] RootBridgeHandle The PCI root bridge to be set up.
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@param[out] Configuration The pointer to the pointer to the PCI bus resource descriptor.
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@retval EFI_SUCCESS The PCI root bridge was set up and the bus range was returned in
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Configuration.
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@retval EFI_INVALID_PARAMETER RootBridgeHandle is not a valid root bridge handle.
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@retval EFI_DEVICE_ERROR Programming failed due to a hardware error.
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@retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of resources.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL_START_BUS_ENUMERATION)(
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IN EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL *This,
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IN EFI_HANDLE RootBridgeHandle,
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OUT VOID **Configuration
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);
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/**
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Programs the PCI root bridge hardware so that it decodes the specified PCI bus range.
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@param[in] This The pointer to the EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL
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instance.
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@param[in] RootBridgeHandle The PCI root bridge whose bus range is to be programmed.
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@param[in] Configuration The pointer to the PCI bus resource descriptor.
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@retval EFI_SUCCESS The bus range for the PCI root bridge was programmed.
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@retval EFI_INVALID_PARAMETER RootBridgeHandle is not a valid root bridge handle.
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@retval EFI_INVALID_PARAMETER Configuration is NULL
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@retval EFI_INVALID_PARAMETER Configuration does not point to a valid ACPI (2.0 & 3.0)
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resource descriptor.
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@retval EFI_INVALID_PARAMETER Configuration does not include a valid ACPI 2.0 bus resource
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descriptor.
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@retval EFI_INVALID_PARAMETER Configuration includes valid ACPI (2.0 & 3.0) resource
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descriptors other than bus descriptors.
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@retval EFI_INVALID_PARAMETER Configuration contains one or more invalid ACPI resource
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descriptors.
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@retval EFI_INVALID_PARAMETER "Address Range Minimum" is invalid for this root bridge.
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@retval EFI_INVALID_PARAMETER "Address Range Length" is invalid for this root bridge.
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@retval EFI_DEVICE_ERROR Programming failed due to a hardware error.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL_SET_BUS_NUMBERS)(
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IN EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL *This,
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IN EFI_HANDLE RootBridgeHandle,
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IN VOID *Configuration
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);
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/**
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Submits the I/O and memory resource requirements for the specified PCI root bridge.
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@param[in] This The pointer to the EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL
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instance.
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@param[in] RootBridgeHandle The PCI root bridge whose I/O and memory resource requirements are being
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submitted.
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@param[in] Configuration The pointer to the PCI I/O and PCI memory resource descriptor.
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@retval EFI_SUCCESS The I/O and memory resource requests for a PCI root bridge were
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accepted.
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@retval EFI_INVALID_PARAMETER RootBridgeHandle is not a valid root bridge handle.
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@retval EFI_INVALID_PARAMETER Configuration is NULL.
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@retval EFI_INVALID_PARAMETER Configuration does not point to a valid ACPI (2.0 & 3.0)
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resource descriptor.
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@retval EFI_INVALID_PARAMETER Configuration includes requests for one or more resource
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types that are not supported by this PCI root bridge. This error will
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happen if the caller did not combine resources according to
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Attributes that were returned by GetAllocAttributes().
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@retval EFI_INVALID_PARAMETER "Address Range Maximum" is invalid.
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@retval EFI_INVALID_PARAMETER "Address Range Length" is invalid for this PCI root bridge.
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@retval EFI_INVALID_PARAMETER "Address Space Granularity" is invalid for this PCI root bridge.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL_SUBMIT_RESOURCES)(
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IN EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL *This,
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IN EFI_HANDLE RootBridgeHandle,
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IN VOID *Configuration
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);
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/**
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Returns the proposed resource settings for the specified PCI root bridge.
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@param[in] This The pointer to the EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL
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instance.
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@param[in] RootBridgeHandle The PCI root bridge handle.
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@param[out] Configuration The pointer to the pointer to the PCI I/O and memory resource descriptor.
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@retval EFI_SUCCESS The requested parameters were returned.
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@retval EFI_INVALID_PARAMETER RootBridgeHandle is not a valid root bridge handle.
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@retval EFI_DEVICE_ERROR Programming failed due to a hardware error.
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@retval EFI_OUT_OF_RESOURCES The request could not be completed due to a lack of resources.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL_GET_PROPOSED_RESOURCES)(
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IN EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL *This,
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IN EFI_HANDLE RootBridgeHandle,
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OUT VOID **Configuration
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);
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/**
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Provides the hooks from the PCI bus driver to every PCI controller (device/function) at various
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stages of the PCI enumeration process that allow the host bridge driver to preinitialize individual
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PCI controllers before enumeration.
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@param[in] This The pointer to the EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL instance.
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@param[in] RootBridgeHandle The associated PCI root bridge handle.
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@param[in] PciAddress The address of the PCI device on the PCI bus.
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@param[in] Phase The phase of the PCI device enumeration.
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@retval EFI_SUCCESS The requested parameters were returned.
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@retval EFI_INVALID_PARAMETER RootBridgeHandle is not a valid root bridge handle.
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@retval EFI_INVALID_PARAMETER Phase is not a valid phase that is defined in
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EFI_PCI_CONTROLLER_RESOURCE_ALLOCATION_PHASE.
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@retval EFI_DEVICE_ERROR Programming failed due to a hardware error. The PCI enumerator
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should not enumerate this device, including its child devices if it is
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a PCI-to-PCI bridge.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL_PREPROCESS_CONTROLLER)(
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IN EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL *This,
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IN EFI_HANDLE RootBridgeHandle,
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IN EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL_PCI_ADDRESS PciAddress,
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IN EFI_PCI_CONTROLLER_RESOURCE_ALLOCATION_PHASE Phase
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);
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///
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/// Provides the basic interfaces to abstract a PCI host bridge resource allocation.
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///
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struct _EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL {
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///
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/// The notification from the PCI bus enumerator that it is about to enter
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/// a certain phase during the enumeration process.
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///
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EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL_NOTIFY_PHASE NotifyPhase;
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///
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/// Retrieves the device handle for the next PCI root bridge that is produced by the
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/// host bridge to which this instance of the EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL is attached.
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///
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EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL_GET_NEXT_ROOT_BRIDGE GetNextRootBridge;
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///
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/// Retrieves the allocation-related attributes of a PCI root bridge.
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///
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EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL_GET_ATTRIBUTES GetAllocAttributes;
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///
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/// Sets up a PCI root bridge for bus enumeration.
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///
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EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL_START_BUS_ENUMERATION StartBusEnumeration;
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///
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/// Sets up the PCI root bridge so that it decodes a specific range of bus numbers.
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///
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EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL_SET_BUS_NUMBERS SetBusNumbers;
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///
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/// Submits the resource requirements for the specified PCI root bridge.
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///
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EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL_SUBMIT_RESOURCES SubmitResources;
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///
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/// Returns the proposed resource assignment for the specified PCI root bridges.
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///
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EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL_GET_PROPOSED_RESOURCES GetProposedResources;
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///
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/// Provides hooks from the PCI bus driver to every PCI controller
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/// (device/function) at various stages of the PCI enumeration process that
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/// allow the host bridge driver to preinitialize individual PCI controllers
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/// before enumeration.
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///
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EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL_PREPROCESS_CONTROLLER PreprocessController;
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};
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extern EFI_GUID gEfiPciHostBridgeResourceAllocationProtocolGuid;
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#endif
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