mirror of https://github.com/acidanthera/audk.git
PcAtChipsetPkg/PciHostBridgeDxe/PciHostBridge.c: rewrap leading comments
Cc: Ruiyu Ni <ruiyu.ni@intel.com> Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Laszlo Ersek <lersek@redhat.com> Regression-tested-by: Gabriel Somlo <somlo@cmu.edu> Reviewed-by: Ruiyu Ni <ruiyu.ni@intel.com> Reviewed-by: Jordan Justen <jordan.l.justen@intel.com> git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@17947 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
Laszlo Ersek
lersek
parent
947b1f3cad
commit
7c7af556e0
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@ -1,14 +1,16 @@
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/** @file
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Provides the basic interfaces to abstract a PCI Host Bridge Resource Allocation
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Provides the basic interfaces to abstract a PCI Host Bridge Resource
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Allocation
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Copyright (c) 2008 - 2013, Intel Corporation. All rights reserved.<BR>
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This program and the accompanying materials are
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licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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Copyright (c) 2008 - 2013, Intel Corporation. All rights reserved.<BR>
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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This program and the accompanying materials are licensed and made available
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under the terms and conditions of the BSD License which accompanies this
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distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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**/
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@ -168,68 +170,114 @@ InitializePciHostBridge (
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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
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phase of the PCI enumeration process.
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These are the notifications from the PCI bus driver that it is about to enter
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a certain phase of the PCI enumeration process.
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This member function can be used to notify the host bridge driver to perform specific actions,
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including any chipset-specific initialization, so that the chipset is ready to enter the next phase.
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Eight notification points are defined at this time. See belows:
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EfiPciHostBridgeBeginEnumeration Resets the host bridge PCI apertures and internal data
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structures. The PCI enumerator should issue this notification
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before starting a fresh enumeration process. Enumeration cannot
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be restarted after sending any other notification such as
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This member function can be used to notify the host bridge driver to perform
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specific actions, including any chipset-specific initialization, so that the
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chipset is ready to enter the next phase. Eight notification points are
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defined at this time. See belows:
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EfiPciHostBridgeBeginEnumeration Resets the host bridge PCI apertures
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and internal data structures. The PCI
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enumerator should issue this
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notification before starting a fresh
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enumeration process. Enumeration
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cannot be restarted after sending any
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other notification such as
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EfiPciHostBridgeBeginBusAllocation.
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EfiPciHostBridgeBeginBusAllocation The bus allocation phase is about to begin. No specific action is
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required here. This notification can be used to perform any
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chipset-specific programming.
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EfiPciHostBridgeEndBusAllocation The bus allocation and bus programming phase is complete. No
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specific action is required here. This notification can be used to
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perform any chipset-specific programming.
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EfiPciHostBridgeBeginResourceAllocation
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The resource allocation phase is about to begin. No specific
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action is required here. This notification can be used to perform
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any chipset-specific programming.
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EfiPciHostBridgeAllocateResources Allocates resources per previously submitted requests for all the PCI
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root bridges. These resource settings are returned on the next call to
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GetProposedResources(). Before calling NotifyPhase() with a Phase of
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EfiPciHostBridgeAllocateResource, the PCI bus enumerator is responsible
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for gathering I/O and memory requests for
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all the PCI root bridges and submitting these requests using
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SubmitResources(). This function pads the resource amount
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to suit the root bridge hardware, takes care of dependencies between
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the PCI root bridges, and calls the Global Coherency Domain (GCD)
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with the allocation request. In the case of padding, the allocated range
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could be bigger than what was requested.
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EfiPciHostBridgeSetResources Programs the host bridge hardware to decode previously allocated
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resources (proposed resources) for all the PCI root bridges. After the
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hardware is programmed, reassigning resources will not be supported.
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The bus settings are not affected.
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EfiPciHostBridgeFreeResources Deallocates resources that were previously allocated for all the PCI
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root bridges and resets the I/O and memory apertures to their initial
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state. The bus settings are not affected. If the request to allocate
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resources fails, the PCI enumerator can use this notification to
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deallocate previous resources, adjust the requests, and retry
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allocation.
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EfiPciHostBridgeEndResourceAllocation The resource allocation phase is completed. No specific action is
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required here. This notification can be used to perform any chipsetspecific
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EfiPciHostBridgeBeginBusAllocation The bus allocation phase is about to
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begin. No specific action is required
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here. This notification can be used to
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perform any chipset-specific
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programming.
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@param[in] This The instance pointer of EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL
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EfiPciHostBridgeEndBusAllocation The bus allocation and bus programming
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phase is complete. No specific action
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is required here. This notification
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can be used to perform any
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chipset-specific programming.
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EfiPciHostBridgeBeginResourceAllocation
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The resource allocation phase is about
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to begin. No specific action is
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required here. This notification can
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be used to perform any
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chipset-specific programming.
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EfiPciHostBridgeAllocateResources Allocates resources per previously
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submitted requests for all the PCI
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root bridges. These resource settings
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are returned on the next call to
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GetProposedResources(). Before calling
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NotifyPhase() with a Phase of
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EfiPciHostBridgeAllocateResource, the
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PCI bus enumerator is responsible for
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gathering I/O and memory requests for
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all the PCI root bridges and
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submitting these requests using
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SubmitResources(). This function pads
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the resource amount to suit the root
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bridge hardware, takes care of
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dependencies between the PCI root
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bridges, and calls the Global
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Coherency Domain (GCD) with the
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allocation request. In the case of
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padding, the allocated range could be
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bigger than what was requested.
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EfiPciHostBridgeSetResources Programs the host bridge hardware to
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decode previously allocated resources
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(proposed resources) for all the PCI
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root bridges. After the hardware is
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programmed, reassigning resources will
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not be supported. The bus settings are
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not affected.
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EfiPciHostBridgeFreeResources Deallocates resources that were
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previously allocated for all the PCI
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root bridges and resets the I/O and
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memory apertures to their initial
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state. The bus settings are not
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affected. If the request to allocate
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resources fails, the PCI enumerator
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can use this notification to
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deallocate previous resources, adjust
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the requests, and retry allocation.
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EfiPciHostBridgeEndResourceAllocation The resource allocation phase is
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completed. No specific action is
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required here. This notification can
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be used to perform any chipsetspecific
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programming.
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@param[in] This The instance pointer of
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EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL
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@param[in] Phase The phase during enumeration
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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
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for a Phase of EfiPciHostBridgeSetResources.
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@retval EFI_INVALID_PARAMETER Invalid phase parameter
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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 if the
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previously submitted resource requests cannot be fulfilled or
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were only partially fulfilled.
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@retval EFI_SUCCESS The notification was accepted without any errors.
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@retval EFI_NOT_READY This phase cannot be entered at this time. For
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example, this error is valid for a Phase of
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EfiPciHostBridgeAllocateResources if
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SubmitResources() has not been called for one
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or more PCI root bridges before this call
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@retval EFI_DEVICE_ERROR Programming failed due to a hardware error.
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This error is valid for a Phase of
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EfiPciHostBridgeSetResources.
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@retval EFI_INVALID_PARAMETER Invalid phase parameter
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@retval EFI_OUT_OF_RESOURCES The request could not be completed due to a
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lack of resources. This error is valid for a
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Phase of EfiPciHostBridgeAllocateResources if
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the previously submitted resource requests
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cannot be fulfilled or were only partially
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fulfilled.
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@retval EFI_SUCCESS The notification was accepted without any
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errors.
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**/
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EFI_STATUS
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EFIAPI
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@ -485,26 +533,38 @@ NotifyPhase(
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}
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/**
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Return the device handle of the next PCI root bridge that is associated with this Host Bridge.
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Return the device handle of the next PCI root bridge that is associated with
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this Host Bridge.
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This function is called multiple times to retrieve the device handles of all
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the PCI root bridges that are associated with this PCI host bridge. Each PCI
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host bridge is associated with one or more PCI root bridges. On each call,
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the handle that was returned by the previous call is passed into the
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interface, and on output the interface returns the device handle of the next
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PCI root bridge. The caller can use the handle to obtain the instance of the
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EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL for that root bridge. When there are no more
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PCI root bridges to report, the interface returns EFI_NOT_FOUND. A PCI
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enumerator must enumerate the PCI root bridges in the order that they are
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returned by this function.
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This function is called multiple times to retrieve the device handles of all the PCI root bridges that
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are associated with this PCI host bridge. Each PCI host bridge is associated with one or more PCI
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root bridges. On each call, the handle that was returned by the previous call is passed into the
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interface, and on output the interface returns the device handle of the next PCI root bridge. The
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caller can use the handle to obtain the instance of the EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL
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for that root bridge. When there are no more PCI root bridges to report, the interface returns
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EFI_NOT_FOUND. A PCI enumerator must enumerate the PCI root bridges in the order that they
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are returned by this function.
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For D945 implementation, there is only one root bridge in PCI host bridge.
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@param[in] This The instance pointer of EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL
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@param[in, out] RootBridgeHandle Returns the device handle of the next PCI root bridge.
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@param[in] This The instance pointer of
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EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL
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@retval EFI_SUCCESS If parameter RootBridgeHandle = NULL, then return the first Rootbridge handle of the
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@param[in, out] RootBridgeHandle Returns the device handle of the next PCI
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root bridge.
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@retval EFI_SUCCESS If parameter RootBridgeHandle = NULL, then
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return the first Rootbridge handle of the
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specific Host bridge and return EFI_SUCCESS.
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@retval EFI_NOT_FOUND Can not find the any more root bridge in specific host bridge.
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@retval EFI_NOT_FOUND Can not find the any more root bridge in
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specific host bridge.
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@retval EFI_INVALID_PARAMETER RootBridgeHandle is not an EFI_HANDLE that was
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returned on a previous call to GetNextRootBridge().
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returned on a previous call to
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GetNextRootBridge().
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**/
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EFI_STATUS
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EFIAPI
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@ -561,40 +621,60 @@ GetNextRootBridge(
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/**
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Returns the allocation attributes of a PCI root bridge.
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The function returns the allocation attributes of a specific PCI root bridge. The attributes can vary
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from one PCI root bridge to another. These attributes are different from the decode-related
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attributes that are returned by the EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.GetAttributes() member function. The
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RootBridgeHandle parameter is used to specify the instance of the PCI root bridge. The device
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handles of all the root bridges that are associated with this host bridge must be obtained by calling
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GetNextRootBridge(). The attributes are static in the sense that they do not change during or
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after the enumeration process. The hardware may provide mechanisms to change the attributes on
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the fly, but such changes must be completed before EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL is
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installed. The permitted values of EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_ATTRIBUTES are defined in
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"Related Definitions" below. The caller uses these attributes to combine multiple resource requests.
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For example, if the flag EFI_PCI_HOST_BRIDGE_COMBINE_MEM_PMEM is set, the PCI bus enumerator needs to
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include requests for the prefetchable memory in the nonprefetchable memory pool and not request any
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prefetchable memory.
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The function returns the allocation attributes of a specific PCI root bridge.
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The attributes can vary from one PCI root bridge to another. These attributes
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are different from the decode-related attributes that are returned by the
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EFI_PCI_ROOT_BRIDGE_IO_PROTOCOL.GetAttributes() member function. The
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RootBridgeHandle parameter is used to specify the instance of the PCI root
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bridge. The device handles of all the root bridges that are associated with
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this host bridge must be obtained by calling GetNextRootBridge(). The
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attributes are static in the sense that they do not change during or after
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the enumeration process. The hardware may provide mechanisms to change the
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attributes on the fly, but such changes must be completed before
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EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL is installed. The permitted
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values of EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_ATTRIBUTES are defined in
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"Related Definitions" below. The caller uses these attributes to combine
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multiple resource requests.
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For example, if the flag EFI_PCI_HOST_BRIDGE_COMBINE_MEM_PMEM is set, the PCI
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bus enumerator needs to include requests for the prefetchable memory in the
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nonprefetchable memory pool and not request any prefetchable memory.
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Attribute Description
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------------------------------------ ----------------------------------------------------------------------
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EFI_PCI_HOST_BRIDGE_COMBINE_MEM_PMEM If this bit is set, then the PCI root bridge does not support separate
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windows for nonprefetchable and prefetchable memory. A PCI bus
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driver needs to include requests for prefetchable memory in the
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------------------------------------ ---------------------------------------
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EFI_PCI_HOST_BRIDGE_COMBINE_MEM_PMEM If this bit is set, then the PCI root
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bridge does not support separate
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windows for nonprefetchable and
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prefetchable memory. A PCI bus driver
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needs to include requests for
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prefetchable memory in the
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nonprefetchable memory pool.
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EFI_PCI_HOST_BRIDGE_MEM64_DECODE If this bit is set, then the PCI root bridge supports 64-bit memory
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windows. If this bit is not set, the PCI bus driver needs to include
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requests for a 64-bit memory address in the corresponding 32-bit
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memory pool.
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EFI_PCI_HOST_BRIDGE_MEM64_DECODE If this bit is set, then the PCI root
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bridge supports 64-bit memory windows.
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If this bit is not set, the PCI bus
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driver needs to include requests for a
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64-bit memory address in the
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corresponding 32-bit memory pool.
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@param[in] This The instance pointer of EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL
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@param[in] RootBridgeHandle The device handle of the PCI root bridge in which the caller is interested. Type
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EFI_HANDLE is defined in InstallProtocolInterface() in the UEFI 2.0 Specification.
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@param[out] Attributes The pointer to attribte of root bridge, it is output parameter
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@param[in] This The instance pointer of
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EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL
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@param[in] RootBridgeHandle The device handle of the PCI root bridge in
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which the caller is interested. Type
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EFI_HANDLE is defined in
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InstallProtocolInterface() in the UEFI 2.0
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Specification.
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@param[out] Attributes The pointer to attribte of root bridge, it is
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output parameter
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@retval EFI_INVALID_PARAMETER Attribute pointer is NULL
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@retval EFI_INVALID_PARAMETER RootBridgehandle is invalid.
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@retval EFI_SUCCESS Success to get attribute of interested root bridge.
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@retval EFI_INVALID_PARAMETER RootBridgehandle is invalid.
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@retval EFI_SUCCESS Success to get attribute of interested root
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bridge.
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**/
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EFI_STATUS
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EFIAPI
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@ -634,17 +714,24 @@ GetAttributes(
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/**
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Sets up the specified PCI root bridge for the bus enumeration process.
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This member function sets up the root bridge for bus enumeration and returns the PCI bus range
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over which the search should be performed in ACPI 2.0 resource descriptor format.
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This member function sets up the root bridge for bus enumeration and returns
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the PCI bus range over which the search should be performed in ACPI 2.0
|
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resource descriptor format.
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@param[in] This The
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EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL
|
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instance.
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@param[in] This The EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_ PROTOCOL instance.
|
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@param[in] RootBridgeHandle The PCI Root Bridge to be set up.
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@param[out] Configuration Pointer to the pointer to the PCI bus resource descriptor.
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@param[out] Configuration Pointer to the pointer to the PCI bus resource
|
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descriptor.
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@retval EFI_INVALID_PARAMETER Invalid Root bridge's handle
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@retval EFI_OUT_OF_RESOURCES Fail to allocate ACPI resource descriptor tag.
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@retval EFI_SUCCESS Sucess to allocate ACPI resource descriptor.
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@retval EFI_OUT_OF_RESOURCES Fail to allocate ACPI resource descriptor tag.
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@retval EFI_SUCCESS Sucess to allocate ACPI resource descriptor.
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||||
**/
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EFI_STATUS
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EFIAPI
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@ -709,28 +796,50 @@ StartBusEnumeration(
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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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Programs the PCI root bridge hardware so that it decodes the specified PCI
|
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bus range.
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This member function programs the specified PCI root bridge to decode the bus range that is
|
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specified by the input parameter Configuration.
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The bus range information is specified in terms of the ACPI 2.0 resource descriptor format.
|
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This member function programs the specified PCI root bridge to decode the bus
|
||||
range that is specified by the input parameter Configuration.
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The bus range information is specified in terms of the ACPI 2.0 resource
|
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descriptor format.
|
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@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
|
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programmed
|
||||
|
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@param[in] This The EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_ PROTOCOL 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_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 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.
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||||
@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
|
||||
|
|
@ -812,29 +921,50 @@ SetBusNumbers(
|
|||
|
||||
|
||||
/**
|
||||
Submits the I/O and memory resource requirements for the specified PCI root bridge.
|
||||
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:
|
||||
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.
|
||||
@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_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.
|
||||
|
||||
@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
|
||||
|
|
@ -963,22 +1093,34 @@ SubmitResources(
|
|||
/**
|
||||
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
|
||||
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.
|
||||
@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.
|
||||
|
||||
@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
|
||||
|
|
@ -1136,31 +1278,46 @@ GetProposedResources(
|
|||
}
|
||||
|
||||
/**
|
||||
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
|
||||
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.
|
||||
|
||||
@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.
|
||||
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.
|
||||
|
||||
@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
|
||||
|
|
|
|||
Loading…
Reference in New Issue