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7ff66d3c4a
Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Ruiyu Ni <ruiyu.ni@intel.com> Reviewed-by: Feng Tian <feng.tian@intel.com> git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@19656 6f19259b-4bc3-4df7-8a09-765794883524
105 lines
3.8 KiB
C
105 lines
3.8 KiB
C
/** @file
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Null instance of PCI Host Bridge Library with empty functions.
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Copyright (c) 2016, 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
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the BSD License which accompanies this distribution. The full
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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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#include <PiDxe.h>
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#include <Library/PciHostBridgeLib.h>
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#include <Library/DebugLib.h>
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GLOBAL_REMOVE_IF_UNREFERENCED CHAR16 *mPciHostBridgeLibAcpiAddressSpaceTypeStr[] = {
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L"Mem", L"I/O", L"Bus"
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};
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/**
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Return all the root bridge instances in an array.
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@param Count Return the count of root bridge instances.
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@return All the root bridge instances in an array.
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The array should be passed into PciHostBridgeFreeRootBridges()
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when it's not used.
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**/
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PCI_ROOT_BRIDGE *
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EFIAPI
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PciHostBridgeGetRootBridges (
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UINTN *Count
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)
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{
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*Count = 0;
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return NULL;
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}
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/**
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Free the root bridge instances array returned from PciHostBridgeGetRootBridges().
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@param The root bridge instances array.
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@param The count of the array.
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**/
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VOID
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EFIAPI
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PciHostBridgeFreeRootBridges (
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PCI_ROOT_BRIDGE *Bridges,
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UINTN Count
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)
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{
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return;
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}
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/**
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Inform the platform that the resource conflict happens.
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@param HostBridgeHandle Handle of the Host Bridge.
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@param Configuration Pointer to PCI I/O and PCI memory resource descriptors.
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The Configuration contains the resources for all the
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root bridges. The resource for each root bridge is
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terminated with END descriptor and an additional END
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is appended indicating the end of the entire resources.
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The resource descriptor field values follow the description
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in EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL.SubmitResources().
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**/
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VOID
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EFIAPI
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PciHostBridgeResourceConflict (
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EFI_HANDLE HostBridgeHandle,
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VOID *Configuration
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)
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{
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EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR *Descriptor;
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UINTN RootBridgeIndex;
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DEBUG ((EFI_D_ERROR, "PciHostBridge: Resource conflict happens!\n"));
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RootBridgeIndex = 0;
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Descriptor = (EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR *) Configuration;
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while (Descriptor->Desc == ACPI_ADDRESS_SPACE_DESCRIPTOR) {
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DEBUG ((EFI_D_ERROR, "RootBridge[%d]:\n", RootBridgeIndex++));
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for (; Descriptor->Desc == ACPI_ADDRESS_SPACE_DESCRIPTOR; Descriptor++) {
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ASSERT (Descriptor->ResType <
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sizeof (mPciHostBridgeLibAcpiAddressSpaceTypeStr) / sizeof (mPciHostBridgeLibAcpiAddressSpaceTypeStr[0])
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);
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DEBUG ((EFI_D_ERROR, " %s: Length/Alignment = 0x%lx / 0x%lx\n",
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mPciHostBridgeLibAcpiAddressSpaceTypeStr[Descriptor->ResType], Descriptor->AddrLen, Descriptor->AddrRangeMax));
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if (Descriptor->ResType == ACPI_ADDRESS_SPACE_TYPE_MEM) {
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DEBUG ((EFI_D_ERROR, " Granularity/SpecificFlag = %ld / %02x%s\n",
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Descriptor->AddrSpaceGranularity, Descriptor->SpecificFlag,
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((Descriptor->SpecificFlag & EFI_ACPI_MEMORY_RESOURCE_SPECIFIC_FLAG_CACHEABLE_PREFETCHABLE) != 0) ? L" (Prefetchable)" : L""
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));
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}
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}
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//
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// Skip the END descriptor for root bridge
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//
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ASSERT (Descriptor->Desc == ACPI_END_TAG_DESCRIPTOR);
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Descriptor = (EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR *) ((EFI_ACPI_END_TAG_DESCRIPTOR *) Descriptor + 1);
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}
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}
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