9d510e61fc
https://bugzilla.tianocore.org/show_bug.cgi?id=1373 Replace BSD 2-Clause License with BSD+Patent License. This change is based on the following emails: https://lists.01.org/pipermail/edk2-devel/2019-February/036260.html https://lists.01.org/pipermail/edk2-devel/2018-October/030385.html RFCs with detailed process for the license change: V3: https://lists.01.org/pipermail/edk2-devel/2019-March/038116.html V2: https://lists.01.org/pipermail/edk2-devel/2019-March/037669.html V1: https://lists.01.org/pipermail/edk2-devel/2019-March/037500.html Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Michael D Kinney <michael.d.kinney@intel.com> Reviewed-by: Hao Wu <hao.a.wu@intel.com> Reviewed-by: Jian J Wang <jian.j.wang@intel.com>
2293 lines
58 KiB
C
2293 lines
58 KiB
C
/** @file
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PCI resources support functions implementation for PCI Bus module.
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Copyright (c) 2006 - 2019, Intel Corporation. All rights reserved.<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#include "PciBus.h"
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//
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// The default policy for the PCI bus driver is NOT to reserve I/O ranges for both ISA aliases and VGA aliases.
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//
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BOOLEAN mReserveIsaAliases = FALSE;
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BOOLEAN mReserveVgaAliases = FALSE;
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BOOLEAN mPolicyDetermined = FALSE;
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/**
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The function is used to skip VGA range.
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@param Start Returned start address including VGA range.
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@param Length The length of VGA range.
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**/
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VOID
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SkipVGAAperture (
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OUT UINT64 *Start,
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IN UINT64 Length
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)
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{
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UINT64 Original;
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UINT64 Mask;
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UINT64 StartOffset;
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UINT64 LimitOffset;
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ASSERT (Start != NULL);
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//
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// For legacy VGA, bit 10 to bit 15 is not decoded
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//
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Mask = 0x3FF;
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Original = *Start;
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StartOffset = Original & Mask;
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LimitOffset = ((*Start) + Length - 1) & Mask;
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if (LimitOffset >= VGABASE1) {
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*Start = *Start - StartOffset + VGALIMIT2 + 1;
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}
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}
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/**
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This function is used to skip ISA aliasing aperture.
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@param Start Returned start address including ISA aliasing aperture.
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@param Length The length of ISA aliasing aperture.
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**/
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VOID
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SkipIsaAliasAperture (
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OUT UINT64 *Start,
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IN UINT64 Length
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)
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{
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UINT64 Original;
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UINT64 Mask;
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UINT64 StartOffset;
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UINT64 LimitOffset;
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ASSERT (Start != NULL);
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//
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// For legacy ISA, bit 10 to bit 15 is not decoded
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//
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Mask = 0x3FF;
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Original = *Start;
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StartOffset = Original & Mask;
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LimitOffset = ((*Start) + Length - 1) & Mask;
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if (LimitOffset >= ISABASE) {
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*Start = *Start - StartOffset + ISALIMIT + 1;
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}
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}
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/**
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This function inserts a resource node into the resource list.
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The resource list is sorted in descend order.
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@param Bridge PCI resource node for bridge.
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@param ResNode Resource node want to be inserted.
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**/
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VOID
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InsertResourceNode (
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IN OUT PCI_RESOURCE_NODE *Bridge,
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IN PCI_RESOURCE_NODE *ResNode
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)
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{
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LIST_ENTRY *CurrentLink;
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PCI_RESOURCE_NODE *Temp;
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UINT64 ResNodeAlignRest;
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UINT64 TempAlignRest;
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ASSERT (Bridge != NULL);
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ASSERT (ResNode != NULL);
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InsertHeadList (&Bridge->ChildList, &ResNode->Link);
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CurrentLink = Bridge->ChildList.ForwardLink->ForwardLink;
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while (CurrentLink != &Bridge->ChildList) {
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Temp = RESOURCE_NODE_FROM_LINK (CurrentLink);
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if (ResNode->Alignment > Temp->Alignment) {
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break;
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} else if (ResNode->Alignment == Temp->Alignment) {
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ResNodeAlignRest = ResNode->Length & ResNode->Alignment;
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TempAlignRest = Temp->Length & Temp->Alignment;
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if ((ResNodeAlignRest == 0) || (ResNodeAlignRest >= TempAlignRest)) {
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break;
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}
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}
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SwapListEntries (&ResNode->Link, CurrentLink);
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CurrentLink = ResNode->Link.ForwardLink;
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}
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}
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/**
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This routine is used to merge two different resource trees in need of
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resource degradation.
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For example, if an upstream PPB doesn't support,
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prefetchable memory decoding, the PCI bus driver will choose to call this function
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to merge prefetchable memory resource list into normal memory list.
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If the TypeMerge is TRUE, Res resource type is changed to the type of destination resource
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type.
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If Dst is NULL or Res is NULL, ASSERT ().
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@param Dst Point to destination resource tree.
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@param Res Point to source resource tree.
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@param TypeMerge If the TypeMerge is TRUE, Res resource type is changed to the type of
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destination resource type.
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**/
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VOID
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MergeResourceTree (
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IN PCI_RESOURCE_NODE *Dst,
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IN PCI_RESOURCE_NODE *Res,
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IN BOOLEAN TypeMerge
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)
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{
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LIST_ENTRY *CurrentLink;
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PCI_RESOURCE_NODE *Temp;
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ASSERT (Dst != NULL);
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ASSERT (Res != NULL);
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while (!IsListEmpty (&Res->ChildList)) {
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CurrentLink = Res->ChildList.ForwardLink;
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Temp = RESOURCE_NODE_FROM_LINK (CurrentLink);
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if (TypeMerge) {
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Temp->ResType = Dst->ResType;
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}
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RemoveEntryList (CurrentLink);
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InsertResourceNode (Dst, Temp);
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}
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}
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/**
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This function is used to calculate the IO16 aperture
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for a bridge.
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@param Bridge PCI resource node for bridge.
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**/
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VOID
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CalculateApertureIo16 (
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IN PCI_RESOURCE_NODE *Bridge
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)
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{
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EFI_STATUS Status;
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UINT64 Aperture;
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LIST_ENTRY *CurrentLink;
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PCI_RESOURCE_NODE *Node;
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UINT64 Offset;
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EFI_PCI_PLATFORM_POLICY PciPolicy;
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UINT64 PaddingAperture;
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if (!mPolicyDetermined) {
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//
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// Check PciPlatform policy
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//
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Status = EFI_NOT_FOUND;
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PciPolicy = 0;
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if (gPciPlatformProtocol != NULL) {
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Status = gPciPlatformProtocol->GetPlatformPolicy (
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gPciPlatformProtocol,
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&PciPolicy
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);
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}
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if (EFI_ERROR (Status) && gPciOverrideProtocol != NULL) {
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Status = gPciOverrideProtocol->GetPlatformPolicy (
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gPciOverrideProtocol,
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&PciPolicy
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);
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}
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if (!EFI_ERROR (Status)) {
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if ((PciPolicy & EFI_RESERVE_ISA_IO_ALIAS) != 0) {
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mReserveIsaAliases = TRUE;
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}
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if ((PciPolicy & EFI_RESERVE_VGA_IO_ALIAS) != 0) {
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mReserveVgaAliases = TRUE;
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}
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}
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mPolicyDetermined = TRUE;
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}
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Aperture = 0;
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PaddingAperture = 0;
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if (Bridge == NULL) {
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return ;
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}
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//
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// Assume the bridge is aligned
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//
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for ( CurrentLink = GetFirstNode (&Bridge->ChildList)
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; !IsNull (&Bridge->ChildList, CurrentLink)
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; CurrentLink = GetNextNode (&Bridge->ChildList, CurrentLink)
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) {
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Node = RESOURCE_NODE_FROM_LINK (CurrentLink);
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if (Node->ResourceUsage == PciResUsagePadding) {
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ASSERT (PaddingAperture == 0);
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PaddingAperture = Node->Length;
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continue;
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}
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//
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// Consider the aperture alignment
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//
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Offset = Aperture & (Node->Alignment);
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if (Offset != 0) {
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Aperture = Aperture + (Node->Alignment + 1) - Offset;
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}
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//
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// IsaEnable and VGAEnable can not be implemented now.
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// If both of them are enabled, then the IO resource would
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// become too limited to meet the requirement of most of devices.
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//
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if (mReserveIsaAliases || mReserveVgaAliases) {
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if (!IS_PCI_BRIDGE (&(Node->PciDev->Pci)) && !IS_CARDBUS_BRIDGE (&(Node->PciDev->Pci))) {
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//
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// Check if there is need to support ISA/VGA decoding
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// If so, we need to avoid isa/vga aliasing range
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//
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if (mReserveIsaAliases) {
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SkipIsaAliasAperture (
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&Aperture,
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Node->Length
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);
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Offset = Aperture & (Node->Alignment);
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if (Offset != 0) {
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Aperture = Aperture + (Node->Alignment + 1) - Offset;
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}
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} else if (mReserveVgaAliases) {
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SkipVGAAperture (
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&Aperture,
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Node->Length
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);
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Offset = Aperture & (Node->Alignment);
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if (Offset != 0) {
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Aperture = Aperture + (Node->Alignment + 1) - Offset;
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}
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}
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}
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}
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Node->Offset = Aperture;
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//
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// Increment aperture by the length of node
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//
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Aperture += Node->Length;
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}
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//
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// Adjust the aperture with the bridge's alignment
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//
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Offset = Aperture & (Bridge->Alignment);
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if (Offset != 0) {
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Aperture = Aperture + (Bridge->Alignment + 1) - Offset;
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}
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Bridge->Length = Aperture;
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//
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// At last, adjust the bridge's alignment to the first child's alignment
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// if the bridge has at least one child
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//
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CurrentLink = Bridge->ChildList.ForwardLink;
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if (CurrentLink != &Bridge->ChildList) {
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Node = RESOURCE_NODE_FROM_LINK (CurrentLink);
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if (Node->Alignment > Bridge->Alignment) {
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Bridge->Alignment = Node->Alignment;
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}
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}
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//
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// Hotplug controller needs padding resources.
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// Use the larger one between the padding resource and actual occupied resource.
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//
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Bridge->Length = MAX (Bridge->Length, PaddingAperture);
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}
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/**
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This function is used to calculate the resource aperture
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for a given bridge device.
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@param Bridge PCI resource node for given bridge device.
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**/
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VOID
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CalculateResourceAperture (
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IN PCI_RESOURCE_NODE *Bridge
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)
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{
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UINT64 Aperture[2];
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LIST_ENTRY *CurrentLink;
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PCI_RESOURCE_NODE *Node;
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if (Bridge == NULL) {
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return ;
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}
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if (Bridge->ResType == PciBarTypeIo16) {
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CalculateApertureIo16 (Bridge);
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return ;
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}
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Aperture[PciResUsageTypical] = 0;
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Aperture[PciResUsagePadding] = 0;
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//
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// Assume the bridge is aligned
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//
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for ( CurrentLink = GetFirstNode (&Bridge->ChildList)
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; !IsNull (&Bridge->ChildList, CurrentLink)
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; CurrentLink = GetNextNode (&Bridge->ChildList, CurrentLink)
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) {
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Node = RESOURCE_NODE_FROM_LINK (CurrentLink);
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//
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// It's possible for a bridge to contain multiple padding resource
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// nodes due to DegradeResource().
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//
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ASSERT ((Node->ResourceUsage == PciResUsageTypical) ||
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(Node->ResourceUsage == PciResUsagePadding));
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ASSERT (Node->ResourceUsage < ARRAY_SIZE (Aperture));
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//
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// Recode current aperture as a offset
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// Apply padding resource to meet alignment requirement
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// Node offset will be used in future real allocation
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//
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Node->Offset = ALIGN_VALUE (Aperture[Node->ResourceUsage], Node->Alignment + 1);
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//
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// Record the total aperture.
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//
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Aperture[Node->ResourceUsage] = Node->Offset + Node->Length;
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}
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//
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// Adjust the aperture with the bridge's alignment
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//
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Aperture[PciResUsageTypical] = ALIGN_VALUE (Aperture[PciResUsageTypical], Bridge->Alignment + 1);
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Aperture[PciResUsagePadding] = ALIGN_VALUE (Aperture[PciResUsagePadding], Bridge->Alignment + 1);
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//
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// Hotplug controller needs padding resources.
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// Use the larger one between the padding resource and actual occupied resource.
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//
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Bridge->Length = MAX (Aperture[PciResUsageTypical], Aperture[PciResUsagePadding]);
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//
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// Adjust the bridge's alignment to the MAX (first) alignment of all children.
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//
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CurrentLink = Bridge->ChildList.ForwardLink;
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if (CurrentLink != &Bridge->ChildList) {
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Node = RESOURCE_NODE_FROM_LINK (CurrentLink);
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if (Node->Alignment > Bridge->Alignment) {
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Bridge->Alignment = Node->Alignment;
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}
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}
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}
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/**
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Get IO/Memory resource info for given PCI device.
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@param PciDev Pci device instance.
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@param IoNode Resource info node for IO .
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@param Mem32Node Resource info node for 32-bit memory.
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@param PMem32Node Resource info node for 32-bit Prefetchable Memory.
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@param Mem64Node Resource info node for 64-bit memory.
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@param PMem64Node Resource info node for 64-bit Prefetchable Memory.
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**/
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VOID
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GetResourceFromDevice (
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IN PCI_IO_DEVICE *PciDev,
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IN OUT PCI_RESOURCE_NODE *IoNode,
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IN OUT PCI_RESOURCE_NODE *Mem32Node,
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IN OUT PCI_RESOURCE_NODE *PMem32Node,
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IN OUT PCI_RESOURCE_NODE *Mem64Node,
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IN OUT PCI_RESOURCE_NODE *PMem64Node
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)
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{
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UINT8 Index;
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PCI_RESOURCE_NODE *Node;
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BOOLEAN ResourceRequested;
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Node = NULL;
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ResourceRequested = FALSE;
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for (Index = 0; Index < PCI_MAX_BAR; Index++) {
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switch ((PciDev->PciBar)[Index].BarType) {
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case PciBarTypeMem32:
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case PciBarTypeOpRom:
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Node = CreateResourceNode (
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PciDev,
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(PciDev->PciBar)[Index].Length,
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(PciDev->PciBar)[Index].Alignment,
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Index,
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(PciDev->PciBar)[Index].BarType,
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PciResUsageTypical
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);
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InsertResourceNode (
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Mem32Node,
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Node
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);
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ResourceRequested = TRUE;
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break;
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case PciBarTypeMem64:
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Node = CreateResourceNode (
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PciDev,
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(PciDev->PciBar)[Index].Length,
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(PciDev->PciBar)[Index].Alignment,
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Index,
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PciBarTypeMem64,
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PciResUsageTypical
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);
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InsertResourceNode (
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Mem64Node,
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Node
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);
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ResourceRequested = TRUE;
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break;
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case PciBarTypePMem64:
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Node = CreateResourceNode (
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PciDev,
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(PciDev->PciBar)[Index].Length,
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(PciDev->PciBar)[Index].Alignment,
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Index,
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PciBarTypePMem64,
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PciResUsageTypical
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);
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InsertResourceNode (
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PMem64Node,
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Node
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);
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ResourceRequested = TRUE;
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break;
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|
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case PciBarTypePMem32:
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|
|
|
Node = CreateResourceNode (
|
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PciDev,
|
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(PciDev->PciBar)[Index].Length,
|
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(PciDev->PciBar)[Index].Alignment,
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Index,
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PciBarTypePMem32,
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PciResUsageTypical
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);
|
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|
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InsertResourceNode (
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PMem32Node,
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Node
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);
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ResourceRequested = TRUE;
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break;
|
|
|
|
case PciBarTypeIo16:
|
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case PciBarTypeIo32:
|
|
|
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Node = CreateResourceNode (
|
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PciDev,
|
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(PciDev->PciBar)[Index].Length,
|
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(PciDev->PciBar)[Index].Alignment,
|
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Index,
|
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PciBarTypeIo16,
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PciResUsageTypical
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);
|
|
|
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InsertResourceNode (
|
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IoNode,
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Node
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);
|
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ResourceRequested = TRUE;
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break;
|
|
|
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case PciBarTypeUnknown:
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break;
|
|
|
|
default:
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break;
|
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}
|
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}
|
|
|
|
//
|
|
// Add VF resource
|
|
//
|
|
for (Index = 0; Index < PCI_MAX_BAR; Index++) {
|
|
|
|
switch ((PciDev->VfPciBar)[Index].BarType) {
|
|
|
|
case PciBarTypeMem32:
|
|
|
|
Node = CreateVfResourceNode (
|
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PciDev,
|
|
(PciDev->VfPciBar)[Index].Length,
|
|
(PciDev->VfPciBar)[Index].Alignment,
|
|
Index,
|
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PciBarTypeMem32,
|
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PciResUsageTypical
|
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);
|
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|
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InsertResourceNode (
|
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Mem32Node,
|
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Node
|
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);
|
|
|
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break;
|
|
|
|
case PciBarTypeMem64:
|
|
|
|
Node = CreateVfResourceNode (
|
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PciDev,
|
|
(PciDev->VfPciBar)[Index].Length,
|
|
(PciDev->VfPciBar)[Index].Alignment,
|
|
Index,
|
|
PciBarTypeMem64,
|
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PciResUsageTypical
|
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);
|
|
|
|
InsertResourceNode (
|
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Mem64Node,
|
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Node
|
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);
|
|
|
|
break;
|
|
|
|
case PciBarTypePMem64:
|
|
|
|
Node = CreateVfResourceNode (
|
|
PciDev,
|
|
(PciDev->VfPciBar)[Index].Length,
|
|
(PciDev->VfPciBar)[Index].Alignment,
|
|
Index,
|
|
PciBarTypePMem64,
|
|
PciResUsageTypical
|
|
);
|
|
|
|
InsertResourceNode (
|
|
PMem64Node,
|
|
Node
|
|
);
|
|
|
|
break;
|
|
|
|
case PciBarTypePMem32:
|
|
|
|
Node = CreateVfResourceNode (
|
|
PciDev,
|
|
(PciDev->VfPciBar)[Index].Length,
|
|
(PciDev->VfPciBar)[Index].Alignment,
|
|
Index,
|
|
PciBarTypePMem32,
|
|
PciResUsageTypical
|
|
);
|
|
|
|
InsertResourceNode (
|
|
PMem32Node,
|
|
Node
|
|
);
|
|
break;
|
|
|
|
case PciBarTypeIo16:
|
|
case PciBarTypeIo32:
|
|
break;
|
|
|
|
case PciBarTypeUnknown:
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
// If there is no resource requested from this device,
|
|
// then we indicate this device has been allocated naturally.
|
|
//
|
|
if (!ResourceRequested) {
|
|
PciDev->Allocated = TRUE;
|
|
}
|
|
}
|
|
|
|
/**
|
|
This function is used to create a resource node.
|
|
|
|
@param PciDev Pci device instance.
|
|
@param Length Length of Io/Memory resource.
|
|
@param Alignment Alignment of resource.
|
|
@param Bar Bar index.
|
|
@param ResType Type of resource: IO/Memory.
|
|
@param ResUsage Resource usage.
|
|
|
|
@return PCI resource node created for given PCI device.
|
|
NULL means PCI resource node is not created.
|
|
|
|
**/
|
|
PCI_RESOURCE_NODE *
|
|
CreateResourceNode (
|
|
IN PCI_IO_DEVICE *PciDev,
|
|
IN UINT64 Length,
|
|
IN UINT64 Alignment,
|
|
IN UINT8 Bar,
|
|
IN PCI_BAR_TYPE ResType,
|
|
IN PCI_RESOURCE_USAGE ResUsage
|
|
)
|
|
{
|
|
PCI_RESOURCE_NODE *Node;
|
|
|
|
Node = NULL;
|
|
|
|
Node = AllocateZeroPool (sizeof (PCI_RESOURCE_NODE));
|
|
ASSERT (Node != NULL);
|
|
if (Node == NULL) {
|
|
return NULL;
|
|
}
|
|
|
|
Node->Signature = PCI_RESOURCE_SIGNATURE;
|
|
Node->PciDev = PciDev;
|
|
Node->Length = Length;
|
|
Node->Alignment = Alignment;
|
|
Node->Bar = Bar;
|
|
Node->ResType = ResType;
|
|
Node->Reserved = FALSE;
|
|
Node->ResourceUsage = ResUsage;
|
|
InitializeListHead (&Node->ChildList);
|
|
|
|
return Node;
|
|
}
|
|
|
|
/**
|
|
This function is used to create a IOV VF resource node.
|
|
|
|
@param PciDev Pci device instance.
|
|
@param Length Length of Io/Memory resource.
|
|
@param Alignment Alignment of resource.
|
|
@param Bar Bar index.
|
|
@param ResType Type of resource: IO/Memory.
|
|
@param ResUsage Resource usage.
|
|
|
|
@return PCI resource node created for given VF PCI device.
|
|
NULL means PCI resource node is not created.
|
|
|
|
**/
|
|
PCI_RESOURCE_NODE *
|
|
CreateVfResourceNode (
|
|
IN PCI_IO_DEVICE *PciDev,
|
|
IN UINT64 Length,
|
|
IN UINT64 Alignment,
|
|
IN UINT8 Bar,
|
|
IN PCI_BAR_TYPE ResType,
|
|
IN PCI_RESOURCE_USAGE ResUsage
|
|
)
|
|
{
|
|
PCI_RESOURCE_NODE *Node;
|
|
|
|
Node = CreateResourceNode (PciDev, Length, Alignment, Bar, ResType, ResUsage);
|
|
if (Node == NULL) {
|
|
return Node;
|
|
}
|
|
|
|
Node->Virtual = TRUE;
|
|
|
|
return Node;
|
|
}
|
|
|
|
/**
|
|
This function is used to extract resource request from
|
|
device node list.
|
|
|
|
@param Bridge Pci device instance.
|
|
@param IoNode Resource info node for IO.
|
|
@param Mem32Node Resource info node for 32-bit memory.
|
|
@param PMem32Node Resource info node for 32-bit Prefetchable Memory.
|
|
@param Mem64Node Resource info node for 64-bit memory.
|
|
@param PMem64Node Resource info node for 64-bit Prefetchable Memory.
|
|
|
|
**/
|
|
VOID
|
|
CreateResourceMap (
|
|
IN PCI_IO_DEVICE *Bridge,
|
|
IN OUT PCI_RESOURCE_NODE *IoNode,
|
|
IN OUT PCI_RESOURCE_NODE *Mem32Node,
|
|
IN OUT PCI_RESOURCE_NODE *PMem32Node,
|
|
IN OUT PCI_RESOURCE_NODE *Mem64Node,
|
|
IN OUT PCI_RESOURCE_NODE *PMem64Node
|
|
)
|
|
{
|
|
PCI_IO_DEVICE *Temp;
|
|
PCI_RESOURCE_NODE *IoBridge;
|
|
PCI_RESOURCE_NODE *Mem32Bridge;
|
|
PCI_RESOURCE_NODE *PMem32Bridge;
|
|
PCI_RESOURCE_NODE *Mem64Bridge;
|
|
PCI_RESOURCE_NODE *PMem64Bridge;
|
|
LIST_ENTRY *CurrentLink;
|
|
|
|
CurrentLink = Bridge->ChildList.ForwardLink;
|
|
|
|
while (CurrentLink != NULL && CurrentLink != &Bridge->ChildList) {
|
|
|
|
Temp = PCI_IO_DEVICE_FROM_LINK (CurrentLink);
|
|
|
|
//
|
|
// Create resource nodes for this device by scanning the
|
|
// Bar array in the device private data
|
|
// If the upstream bridge doesn't support this device,
|
|
// no any resource node will be created for this device
|
|
//
|
|
GetResourceFromDevice (
|
|
Temp,
|
|
IoNode,
|
|
Mem32Node,
|
|
PMem32Node,
|
|
Mem64Node,
|
|
PMem64Node
|
|
);
|
|
|
|
if (IS_PCI_BRIDGE (&Temp->Pci)) {
|
|
|
|
//
|
|
// If the device has children, create a bridge resource node for this PPB
|
|
// Note: For PPB, memory aperture is aligned with 1MB and IO aperture
|
|
// is aligned with 4KB (smaller alignments may be supported).
|
|
//
|
|
IoBridge = CreateResourceNode (
|
|
Temp,
|
|
0,
|
|
Temp->BridgeIoAlignment,
|
|
PPB_IO_RANGE,
|
|
PciBarTypeIo16,
|
|
PciResUsageTypical
|
|
);
|
|
|
|
Mem32Bridge = CreateResourceNode (
|
|
Temp,
|
|
0,
|
|
0xFFFFF,
|
|
PPB_MEM32_RANGE,
|
|
PciBarTypeMem32,
|
|
PciResUsageTypical
|
|
);
|
|
|
|
PMem32Bridge = CreateResourceNode (
|
|
Temp,
|
|
0,
|
|
0xFFFFF,
|
|
PPB_PMEM32_RANGE,
|
|
PciBarTypePMem32,
|
|
PciResUsageTypical
|
|
);
|
|
|
|
Mem64Bridge = CreateResourceNode (
|
|
Temp,
|
|
0,
|
|
0xFFFFF,
|
|
PPB_MEM64_RANGE,
|
|
PciBarTypeMem64,
|
|
PciResUsageTypical
|
|
);
|
|
|
|
PMem64Bridge = CreateResourceNode (
|
|
Temp,
|
|
0,
|
|
0xFFFFF,
|
|
PPB_PMEM64_RANGE,
|
|
PciBarTypePMem64,
|
|
PciResUsageTypical
|
|
);
|
|
|
|
//
|
|
// Recursively create resource map on this bridge
|
|
//
|
|
CreateResourceMap (
|
|
Temp,
|
|
IoBridge,
|
|
Mem32Bridge,
|
|
PMem32Bridge,
|
|
Mem64Bridge,
|
|
PMem64Bridge
|
|
);
|
|
|
|
if (ResourceRequestExisted (IoBridge)) {
|
|
InsertResourceNode (
|
|
IoNode,
|
|
IoBridge
|
|
);
|
|
} else {
|
|
FreePool (IoBridge);
|
|
IoBridge = NULL;
|
|
}
|
|
|
|
//
|
|
// If there is node under this resource bridge,
|
|
// then calculate bridge's aperture of this type
|
|
// and insert it into the respective resource tree.
|
|
// If no, delete this resource bridge
|
|
//
|
|
if (ResourceRequestExisted (Mem32Bridge)) {
|
|
InsertResourceNode (
|
|
Mem32Node,
|
|
Mem32Bridge
|
|
);
|
|
} else {
|
|
FreePool (Mem32Bridge);
|
|
Mem32Bridge = NULL;
|
|
}
|
|
|
|
//
|
|
// If there is node under this resource bridge,
|
|
// then calculate bridge's aperture of this type
|
|
// and insert it into the respective resource tree.
|
|
// If no, delete this resource bridge
|
|
//
|
|
if (ResourceRequestExisted (PMem32Bridge)) {
|
|
InsertResourceNode (
|
|
PMem32Node,
|
|
PMem32Bridge
|
|
);
|
|
} else {
|
|
FreePool (PMem32Bridge);
|
|
PMem32Bridge = NULL;
|
|
}
|
|
|
|
//
|
|
// If there is node under this resource bridge,
|
|
// then calculate bridge's aperture of this type
|
|
// and insert it into the respective resource tree.
|
|
// If no, delete this resource bridge
|
|
//
|
|
if (ResourceRequestExisted (Mem64Bridge)) {
|
|
InsertResourceNode (
|
|
Mem64Node,
|
|
Mem64Bridge
|
|
);
|
|
} else {
|
|
FreePool (Mem64Bridge);
|
|
Mem64Bridge = NULL;
|
|
}
|
|
|
|
//
|
|
// If there is node under this resource bridge,
|
|
// then calculate bridge's aperture of this type
|
|
// and insert it into the respective resource tree.
|
|
// If no, delete this resource bridge
|
|
//
|
|
if (ResourceRequestExisted (PMem64Bridge)) {
|
|
InsertResourceNode (
|
|
PMem64Node,
|
|
PMem64Bridge
|
|
);
|
|
} else {
|
|
FreePool (PMem64Bridge);
|
|
PMem64Bridge = NULL;
|
|
}
|
|
|
|
}
|
|
|
|
//
|
|
// If it is P2C, apply hard coded resource padding
|
|
//
|
|
if (IS_CARDBUS_BRIDGE (&Temp->Pci)) {
|
|
ResourcePaddingForCardBusBridge (
|
|
Temp,
|
|
IoNode,
|
|
Mem32Node,
|
|
PMem32Node,
|
|
Mem64Node,
|
|
PMem64Node
|
|
);
|
|
}
|
|
|
|
CurrentLink = CurrentLink->ForwardLink;
|
|
}
|
|
|
|
//
|
|
// To do some platform specific resource padding ...
|
|
//
|
|
ResourcePaddingPolicy (
|
|
Bridge,
|
|
IoNode,
|
|
Mem32Node,
|
|
PMem32Node,
|
|
Mem64Node,
|
|
PMem64Node
|
|
);
|
|
|
|
//
|
|
// Degrade resource if necessary
|
|
//
|
|
DegradeResource (
|
|
Bridge,
|
|
Mem32Node,
|
|
PMem32Node,
|
|
Mem64Node,
|
|
PMem64Node
|
|
);
|
|
|
|
//
|
|
// Calculate resource aperture for this bridge device
|
|
//
|
|
CalculateResourceAperture (Mem32Node);
|
|
CalculateResourceAperture (PMem32Node);
|
|
CalculateResourceAperture (Mem64Node);
|
|
CalculateResourceAperture (PMem64Node);
|
|
CalculateResourceAperture (IoNode);
|
|
}
|
|
|
|
/**
|
|
This function is used to do the resource padding for a specific platform.
|
|
|
|
@param PciDev Pci device instance.
|
|
@param IoNode Resource info node for IO.
|
|
@param Mem32Node Resource info node for 32-bit memory.
|
|
@param PMem32Node Resource info node for 32-bit Prefetchable Memory.
|
|
@param Mem64Node Resource info node for 64-bit memory.
|
|
@param PMem64Node Resource info node for 64-bit Prefetchable Memory.
|
|
|
|
**/
|
|
VOID
|
|
ResourcePaddingPolicy (
|
|
IN PCI_IO_DEVICE *PciDev,
|
|
IN PCI_RESOURCE_NODE *IoNode,
|
|
IN PCI_RESOURCE_NODE *Mem32Node,
|
|
IN PCI_RESOURCE_NODE *PMem32Node,
|
|
IN PCI_RESOURCE_NODE *Mem64Node,
|
|
IN PCI_RESOURCE_NODE *PMem64Node
|
|
)
|
|
{
|
|
//
|
|
// Create padding resource node
|
|
//
|
|
if (PciDev->ResourcePaddingDescriptors != NULL) {
|
|
ApplyResourcePadding (
|
|
PciDev,
|
|
IoNode,
|
|
Mem32Node,
|
|
PMem32Node,
|
|
Mem64Node,
|
|
PMem64Node
|
|
);
|
|
}
|
|
}
|
|
|
|
/**
|
|
This function is used to degrade resource if the upstream bridge
|
|
doesn't support certain resource. Degradation path is
|
|
PMEM64 -> MEM64 -> MEM32
|
|
PMEM64 -> PMEM32 -> MEM32
|
|
IO32 -> IO16.
|
|
|
|
@param Bridge Pci device instance.
|
|
@param Mem32Node Resource info node for 32-bit memory.
|
|
@param PMem32Node Resource info node for 32-bit Prefetchable Memory.
|
|
@param Mem64Node Resource info node for 64-bit memory.
|
|
@param PMem64Node Resource info node for 64-bit Prefetchable Memory.
|
|
|
|
**/
|
|
VOID
|
|
DegradeResource (
|
|
IN PCI_IO_DEVICE *Bridge,
|
|
IN PCI_RESOURCE_NODE *Mem32Node,
|
|
IN PCI_RESOURCE_NODE *PMem32Node,
|
|
IN PCI_RESOURCE_NODE *Mem64Node,
|
|
IN PCI_RESOURCE_NODE *PMem64Node
|
|
)
|
|
{
|
|
PCI_IO_DEVICE *PciIoDevice;
|
|
LIST_ENTRY *ChildDeviceLink;
|
|
LIST_ENTRY *ChildNodeLink;
|
|
LIST_ENTRY *NextChildNodeLink;
|
|
PCI_RESOURCE_NODE *ResourceNode;
|
|
|
|
if (FeaturePcdGet (PcdPciDegradeResourceForOptionRom)) {
|
|
//
|
|
// If any child device has both option ROM and 64-bit BAR, degrade its PMEM64/MEM64
|
|
// requests in case that if a legacy option ROM image can not access 64-bit resources.
|
|
//
|
|
ChildDeviceLink = Bridge->ChildList.ForwardLink;
|
|
while (ChildDeviceLink != NULL && ChildDeviceLink != &Bridge->ChildList) {
|
|
PciIoDevice = PCI_IO_DEVICE_FROM_LINK (ChildDeviceLink);
|
|
if (PciIoDevice->RomSize != 0) {
|
|
if (!IsListEmpty (&Mem64Node->ChildList)) {
|
|
ChildNodeLink = Mem64Node->ChildList.ForwardLink;
|
|
while (ChildNodeLink != &Mem64Node->ChildList) {
|
|
ResourceNode = RESOURCE_NODE_FROM_LINK (ChildNodeLink);
|
|
NextChildNodeLink = ChildNodeLink->ForwardLink;
|
|
|
|
if ((ResourceNode->PciDev == PciIoDevice) &&
|
|
(ResourceNode->Virtual || !PciIoDevice->PciBar[ResourceNode->Bar].BarTypeFixed)
|
|
) {
|
|
RemoveEntryList (ChildNodeLink);
|
|
InsertResourceNode (Mem32Node, ResourceNode);
|
|
}
|
|
ChildNodeLink = NextChildNodeLink;
|
|
}
|
|
}
|
|
|
|
if (!IsListEmpty (&PMem64Node->ChildList)) {
|
|
ChildNodeLink = PMem64Node->ChildList.ForwardLink;
|
|
while (ChildNodeLink != &PMem64Node->ChildList) {
|
|
ResourceNode = RESOURCE_NODE_FROM_LINK (ChildNodeLink);
|
|
NextChildNodeLink = ChildNodeLink->ForwardLink;
|
|
|
|
if ((ResourceNode->PciDev == PciIoDevice) &&
|
|
(ResourceNode->Virtual || !PciIoDevice->PciBar[ResourceNode->Bar].BarTypeFixed)
|
|
) {
|
|
RemoveEntryList (ChildNodeLink);
|
|
InsertResourceNode (PMem32Node, ResourceNode);
|
|
}
|
|
ChildNodeLink = NextChildNodeLink;
|
|
}
|
|
}
|
|
|
|
}
|
|
ChildDeviceLink = ChildDeviceLink->ForwardLink;
|
|
}
|
|
}
|
|
|
|
//
|
|
// If firmware is in 32-bit mode,
|
|
// then degrade PMEM64/MEM64 requests
|
|
//
|
|
if (sizeof (UINTN) <= 4) {
|
|
MergeResourceTree (
|
|
Mem32Node,
|
|
Mem64Node,
|
|
TRUE
|
|
);
|
|
|
|
MergeResourceTree (
|
|
PMem32Node,
|
|
PMem64Node,
|
|
TRUE
|
|
);
|
|
} else {
|
|
//
|
|
// if the bridge does not support MEM64, degrade MEM64 to MEM32
|
|
//
|
|
if (!BridgeSupportResourceDecode (Bridge, EFI_BRIDGE_MEM64_DECODE_SUPPORTED)) {
|
|
MergeResourceTree (
|
|
Mem32Node,
|
|
Mem64Node,
|
|
TRUE
|
|
);
|
|
}
|
|
|
|
//
|
|
// if the bridge does not support PMEM64, degrade PMEM64 to PMEM32
|
|
//
|
|
if (!BridgeSupportResourceDecode (Bridge, EFI_BRIDGE_PMEM64_DECODE_SUPPORTED)) {
|
|
MergeResourceTree (
|
|
PMem32Node,
|
|
PMem64Node,
|
|
TRUE
|
|
);
|
|
}
|
|
|
|
//
|
|
// if both PMEM64 and PMEM32 requests from child devices, which can not be satisfied
|
|
// by a P2P bridge simultaneously, keep PMEM64 and degrade PMEM32 to MEM32.
|
|
//
|
|
if (!IsListEmpty (&PMem64Node->ChildList) && Bridge->Parent != NULL) {
|
|
MergeResourceTree (
|
|
Mem32Node,
|
|
PMem32Node,
|
|
TRUE
|
|
);
|
|
}
|
|
}
|
|
|
|
//
|
|
// If bridge doesn't support Pmem32
|
|
// degrade it to mem32
|
|
//
|
|
if (!BridgeSupportResourceDecode (Bridge, EFI_BRIDGE_PMEM32_DECODE_SUPPORTED)) {
|
|
MergeResourceTree (
|
|
Mem32Node,
|
|
PMem32Node,
|
|
TRUE
|
|
);
|
|
}
|
|
|
|
//
|
|
// if root bridge supports combined Pmem Mem decoding
|
|
// merge these two type of resource
|
|
//
|
|
if (BridgeSupportResourceDecode (Bridge, EFI_BRIDGE_PMEM_MEM_COMBINE_SUPPORTED)) {
|
|
MergeResourceTree (
|
|
Mem32Node,
|
|
PMem32Node,
|
|
FALSE
|
|
);
|
|
|
|
//
|
|
// No need to check if to degrade MEM64 after merge, because
|
|
// if there are PMEM64 still here, 64-bit decode should be supported
|
|
// by the root bride.
|
|
//
|
|
MergeResourceTree (
|
|
Mem64Node,
|
|
PMem64Node,
|
|
FALSE
|
|
);
|
|
}
|
|
}
|
|
|
|
/**
|
|
Test whether bridge device support decode resource.
|
|
|
|
@param Bridge Bridge device instance.
|
|
@param Decode Decode type according to resource type.
|
|
|
|
@return TRUE The bridge device support decode resource.
|
|
@return FALSE The bridge device don't support decode resource.
|
|
|
|
**/
|
|
BOOLEAN
|
|
BridgeSupportResourceDecode (
|
|
IN PCI_IO_DEVICE *Bridge,
|
|
IN UINT32 Decode
|
|
)
|
|
{
|
|
if (((Bridge->Decodes) & Decode) != 0) {
|
|
return TRUE;
|
|
}
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
/**
|
|
This function is used to program the resource allocated
|
|
for each resource node under specified bridge.
|
|
|
|
@param Base Base address of resource to be programmed.
|
|
@param Bridge PCI resource node for the bridge device.
|
|
|
|
@retval EFI_SUCCESS Successfully to program all resources
|
|
on given PCI bridge device.
|
|
@retval EFI_OUT_OF_RESOURCES Base is all one.
|
|
|
|
**/
|
|
EFI_STATUS
|
|
ProgramResource (
|
|
IN UINT64 Base,
|
|
IN PCI_RESOURCE_NODE *Bridge
|
|
)
|
|
{
|
|
LIST_ENTRY *CurrentLink;
|
|
PCI_RESOURCE_NODE *Node;
|
|
EFI_STATUS Status;
|
|
|
|
if (Base == gAllOne) {
|
|
return EFI_OUT_OF_RESOURCES;
|
|
}
|
|
|
|
CurrentLink = Bridge->ChildList.ForwardLink;
|
|
|
|
while (CurrentLink != &Bridge->ChildList) {
|
|
|
|
Node = RESOURCE_NODE_FROM_LINK (CurrentLink);
|
|
|
|
if (!IS_PCI_BRIDGE (&(Node->PciDev->Pci))) {
|
|
|
|
if (IS_CARDBUS_BRIDGE (&(Node->PciDev->Pci))) {
|
|
//
|
|
// Program the PCI Card Bus device
|
|
//
|
|
ProgramP2C (Base, Node);
|
|
} else {
|
|
//
|
|
// Program the PCI device BAR
|
|
//
|
|
ProgramBar (Base, Node);
|
|
}
|
|
} else {
|
|
//
|
|
// Program the PCI devices under this bridge
|
|
//
|
|
Status = ProgramResource (Base + Node->Offset, Node);
|
|
if (EFI_ERROR (Status)) {
|
|
return Status;
|
|
}
|
|
|
|
ProgramPpbApperture (Base, Node);
|
|
}
|
|
|
|
CurrentLink = CurrentLink->ForwardLink;
|
|
}
|
|
|
|
return EFI_SUCCESS;
|
|
}
|
|
|
|
/**
|
|
Program Bar register for PCI device.
|
|
|
|
@param Base Base address for PCI device resource to be programmed.
|
|
@param Node Point to resource node structure.
|
|
|
|
**/
|
|
VOID
|
|
ProgramBar (
|
|
IN UINT64 Base,
|
|
IN PCI_RESOURCE_NODE *Node
|
|
)
|
|
{
|
|
EFI_PCI_IO_PROTOCOL *PciIo;
|
|
UINT64 Address;
|
|
UINT32 Address32;
|
|
|
|
ASSERT (Node->Bar < PCI_MAX_BAR);
|
|
|
|
//
|
|
// Check VF BAR
|
|
//
|
|
if (Node->Virtual) {
|
|
ProgramVfBar (Base, Node);
|
|
return;
|
|
}
|
|
|
|
Address = 0;
|
|
PciIo = &(Node->PciDev->PciIo);
|
|
|
|
Address = Base + Node->Offset;
|
|
|
|
//
|
|
// Indicate pci bus driver has allocated
|
|
// resource for this device
|
|
// It might be a temporary solution here since
|
|
// pci device could have multiple bar
|
|
//
|
|
Node->PciDev->Allocated = TRUE;
|
|
|
|
switch ((Node->PciDev->PciBar[Node->Bar]).BarType) {
|
|
|
|
case PciBarTypeIo16:
|
|
case PciBarTypeIo32:
|
|
case PciBarTypeMem32:
|
|
case PciBarTypePMem32:
|
|
|
|
PciIo->Pci.Write (
|
|
PciIo,
|
|
EfiPciIoWidthUint32,
|
|
(Node->PciDev->PciBar[Node->Bar]).Offset,
|
|
1,
|
|
&Address
|
|
);
|
|
//
|
|
// Continue to the case PciBarTypeOpRom to set the BaseAddress.
|
|
// PciBarTypeOpRom is a virtual BAR only in root bridge, to capture
|
|
// the MEM32 resource requirement for Option ROM shadow.
|
|
//
|
|
|
|
case PciBarTypeOpRom:
|
|
Node->PciDev->PciBar[Node->Bar].BaseAddress = Address;
|
|
|
|
break;
|
|
|
|
case PciBarTypeMem64:
|
|
case PciBarTypePMem64:
|
|
|
|
Address32 = (UINT32) (Address & 0x00000000FFFFFFFF);
|
|
|
|
PciIo->Pci.Write (
|
|
PciIo,
|
|
EfiPciIoWidthUint32,
|
|
(Node->PciDev->PciBar[Node->Bar]).Offset,
|
|
1,
|
|
&Address32
|
|
);
|
|
|
|
Address32 = (UINT32) RShiftU64 (Address, 32);
|
|
|
|
PciIo->Pci.Write (
|
|
PciIo,
|
|
EfiPciIoWidthUint32,
|
|
(UINT8) ((Node->PciDev->PciBar[Node->Bar]).Offset + 4),
|
|
1,
|
|
&Address32
|
|
);
|
|
|
|
Node->PciDev->PciBar[Node->Bar].BaseAddress = Address;
|
|
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
/**
|
|
Program IOV VF Bar register for PCI device.
|
|
|
|
@param Base Base address for PCI device resource to be programmed.
|
|
@param Node Point to resource node structure.
|
|
|
|
**/
|
|
EFI_STATUS
|
|
ProgramVfBar (
|
|
IN UINT64 Base,
|
|
IN PCI_RESOURCE_NODE *Node
|
|
)
|
|
{
|
|
EFI_PCI_IO_PROTOCOL *PciIo;
|
|
UINT64 Address;
|
|
UINT32 Address32;
|
|
|
|
ASSERT (Node->Bar < PCI_MAX_BAR);
|
|
ASSERT (Node->Virtual);
|
|
|
|
Address = 0;
|
|
PciIo = &(Node->PciDev->PciIo);
|
|
|
|
Address = Base + Node->Offset;
|
|
|
|
//
|
|
// Indicate pci bus driver has allocated
|
|
// resource for this device
|
|
// It might be a temporary solution here since
|
|
// pci device could have multiple bar
|
|
//
|
|
Node->PciDev->Allocated = TRUE;
|
|
|
|
switch ((Node->PciDev->VfPciBar[Node->Bar]).BarType) {
|
|
|
|
case PciBarTypeMem32:
|
|
case PciBarTypePMem32:
|
|
|
|
PciIo->Pci.Write (
|
|
PciIo,
|
|
EfiPciIoWidthUint32,
|
|
(Node->PciDev->VfPciBar[Node->Bar]).Offset,
|
|
1,
|
|
&Address
|
|
);
|
|
|
|
Node->PciDev->VfPciBar[Node->Bar].BaseAddress = Address;
|
|
break;
|
|
|
|
case PciBarTypeMem64:
|
|
case PciBarTypePMem64:
|
|
|
|
Address32 = (UINT32) (Address & 0x00000000FFFFFFFF);
|
|
|
|
PciIo->Pci.Write (
|
|
PciIo,
|
|
EfiPciIoWidthUint32,
|
|
(Node->PciDev->VfPciBar[Node->Bar]).Offset,
|
|
1,
|
|
&Address32
|
|
);
|
|
|
|
Address32 = (UINT32) RShiftU64 (Address, 32);
|
|
|
|
PciIo->Pci.Write (
|
|
PciIo,
|
|
EfiPciIoWidthUint32,
|
|
((Node->PciDev->VfPciBar[Node->Bar]).Offset + 4),
|
|
1,
|
|
&Address32
|
|
);
|
|
|
|
Node->PciDev->VfPciBar[Node->Bar].BaseAddress = Address;
|
|
break;
|
|
|
|
case PciBarTypeIo16:
|
|
case PciBarTypeIo32:
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return EFI_SUCCESS;
|
|
}
|
|
|
|
/**
|
|
Program PCI-PCI bridge aperture.
|
|
|
|
@param Base Base address for resource.
|
|
@param Node Point to resource node structure.
|
|
|
|
**/
|
|
VOID
|
|
ProgramPpbApperture (
|
|
IN UINT64 Base,
|
|
IN PCI_RESOURCE_NODE *Node
|
|
)
|
|
{
|
|
EFI_PCI_IO_PROTOCOL *PciIo;
|
|
UINT64 Address;
|
|
UINT32 Address32;
|
|
|
|
Address = 0;
|
|
//
|
|
// If no device resource of this PPB, return anyway
|
|
// Aperture is set default in the initialization code
|
|
//
|
|
if (Node->Length == 0 || Node->ResourceUsage == PciResUsagePadding) {
|
|
//
|
|
// For padding resource node, just ignore when programming
|
|
//
|
|
return ;
|
|
}
|
|
|
|
PciIo = &(Node->PciDev->PciIo);
|
|
Address = Base + Node->Offset;
|
|
|
|
//
|
|
// Indicate the PPB resource has been allocated
|
|
//
|
|
Node->PciDev->Allocated = TRUE;
|
|
|
|
switch (Node->Bar) {
|
|
|
|
case PPB_BAR_0:
|
|
case PPB_BAR_1:
|
|
switch ((Node->PciDev->PciBar[Node->Bar]).BarType) {
|
|
|
|
case PciBarTypeIo16:
|
|
case PciBarTypeIo32:
|
|
case PciBarTypeMem32:
|
|
case PciBarTypePMem32:
|
|
|
|
PciIo->Pci.Write (
|
|
PciIo,
|
|
EfiPciIoWidthUint32,
|
|
(Node->PciDev->PciBar[Node->Bar]).Offset,
|
|
1,
|
|
&Address
|
|
);
|
|
|
|
Node->PciDev->PciBar[Node->Bar].BaseAddress = Address;
|
|
Node->PciDev->PciBar[Node->Bar].Length = Node->Length;
|
|
break;
|
|
|
|
case PciBarTypeMem64:
|
|
case PciBarTypePMem64:
|
|
|
|
Address32 = (UINT32) (Address & 0x00000000FFFFFFFF);
|
|
|
|
PciIo->Pci.Write (
|
|
PciIo,
|
|
EfiPciIoWidthUint32,
|
|
(Node->PciDev->PciBar[Node->Bar]).Offset,
|
|
1,
|
|
&Address32
|
|
);
|
|
|
|
Address32 = (UINT32) RShiftU64 (Address, 32);
|
|
|
|
PciIo->Pci.Write (
|
|
PciIo,
|
|
EfiPciIoWidthUint32,
|
|
(UINT8) ((Node->PciDev->PciBar[Node->Bar]).Offset + 4),
|
|
1,
|
|
&Address32
|
|
);
|
|
|
|
Node->PciDev->PciBar[Node->Bar].BaseAddress = Address;
|
|
Node->PciDev->PciBar[Node->Bar].Length = Node->Length;
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case PPB_IO_RANGE:
|
|
|
|
Address32 = ((UINT32) (Address)) >> 8;
|
|
PciIo->Pci.Write (
|
|
PciIo,
|
|
EfiPciIoWidthUint8,
|
|
0x1C,
|
|
1,
|
|
&Address32
|
|
);
|
|
|
|
Address32 >>= 8;
|
|
PciIo->Pci.Write (
|
|
PciIo,
|
|
EfiPciIoWidthUint16,
|
|
0x30,
|
|
1,
|
|
&Address32
|
|
);
|
|
|
|
Address32 = (UINT32) (Address + Node->Length - 1);
|
|
Address32 = ((UINT32) (Address32)) >> 8;
|
|
PciIo->Pci.Write (
|
|
PciIo,
|
|
EfiPciIoWidthUint8,
|
|
0x1D,
|
|
1,
|
|
&Address32
|
|
);
|
|
|
|
Address32 >>= 8;
|
|
PciIo->Pci.Write (
|
|
PciIo,
|
|
EfiPciIoWidthUint16,
|
|
0x32,
|
|
1,
|
|
&Address32
|
|
);
|
|
|
|
Node->PciDev->PciBar[Node->Bar].BaseAddress = Address;
|
|
Node->PciDev->PciBar[Node->Bar].Length = Node->Length;
|
|
break;
|
|
|
|
case PPB_MEM32_RANGE:
|
|
|
|
Address32 = ((UINT32) (Address)) >> 16;
|
|
PciIo->Pci.Write (
|
|
PciIo,
|
|
EfiPciIoWidthUint16,
|
|
0x20,
|
|
1,
|
|
&Address32
|
|
);
|
|
|
|
Address32 = (UINT32) (Address + Node->Length - 1);
|
|
Address32 = ((UINT32) (Address32)) >> 16;
|
|
PciIo->Pci.Write (
|
|
PciIo,
|
|
EfiPciIoWidthUint16,
|
|
0x22,
|
|
1,
|
|
&Address32
|
|
);
|
|
|
|
Node->PciDev->PciBar[Node->Bar].BaseAddress = Address;
|
|
Node->PciDev->PciBar[Node->Bar].Length = Node->Length;
|
|
break;
|
|
|
|
case PPB_PMEM32_RANGE:
|
|
case PPB_PMEM64_RANGE:
|
|
|
|
Address32 = ((UINT32) (Address)) >> 16;
|
|
PciIo->Pci.Write (
|
|
PciIo,
|
|
EfiPciIoWidthUint16,
|
|
0x24,
|
|
1,
|
|
&Address32
|
|
);
|
|
|
|
Address32 = (UINT32) (Address + Node->Length - 1);
|
|
Address32 = ((UINT32) (Address32)) >> 16;
|
|
PciIo->Pci.Write (
|
|
PciIo,
|
|
EfiPciIoWidthUint16,
|
|
0x26,
|
|
1,
|
|
&Address32
|
|
);
|
|
|
|
Address32 = (UINT32) RShiftU64 (Address, 32);
|
|
PciIo->Pci.Write (
|
|
PciIo,
|
|
EfiPciIoWidthUint32,
|
|
0x28,
|
|
1,
|
|
&Address32
|
|
);
|
|
|
|
Address32 = (UINT32) RShiftU64 ((Address + Node->Length - 1), 32);
|
|
PciIo->Pci.Write (
|
|
PciIo,
|
|
EfiPciIoWidthUint32,
|
|
0x2C,
|
|
1,
|
|
&Address32
|
|
);
|
|
|
|
Node->PciDev->PciBar[Node->Bar].BaseAddress = Address;
|
|
Node->PciDev->PciBar[Node->Bar].Length = Node->Length;
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
/**
|
|
Program parent bridge for Option Rom.
|
|
|
|
@param PciDevice Pci device instance.
|
|
@param OptionRomBase Base address for Option Rom.
|
|
@param Enable Enable or disable PCI memory.
|
|
|
|
**/
|
|
VOID
|
|
ProgramUpstreamBridgeForRom (
|
|
IN PCI_IO_DEVICE *PciDevice,
|
|
IN UINT32 OptionRomBase,
|
|
IN BOOLEAN Enable
|
|
)
|
|
{
|
|
PCI_IO_DEVICE *Parent;
|
|
EFI_PCI_IO_PROTOCOL *PciIo;
|
|
UINT16 Base;
|
|
UINT16 Limit;
|
|
//
|
|
// For root bridge, just return.
|
|
//
|
|
Parent = PciDevice->Parent;
|
|
while (Parent != NULL) {
|
|
if (!IS_PCI_BRIDGE (&Parent->Pci)) {
|
|
break;
|
|
}
|
|
|
|
PciIo = &Parent->PciIo;
|
|
|
|
//
|
|
// Program PPB to only open a single <= 16MB aperture
|
|
//
|
|
if (Enable) {
|
|
//
|
|
// Only cover MMIO for Option ROM.
|
|
//
|
|
Base = (UINT16) (OptionRomBase >> 16);
|
|
Limit = (UINT16) ((OptionRomBase + PciDevice->RomSize - 1) >> 16);
|
|
PciIo->Pci.Write (PciIo, EfiPciIoWidthUint16, OFFSET_OF (PCI_TYPE01, Bridge.MemoryBase), 1, &Base);
|
|
PciIo->Pci.Write (PciIo, EfiPciIoWidthUint16, OFFSET_OF (PCI_TYPE01, Bridge.MemoryLimit), 1, &Limit);
|
|
|
|
PCI_ENABLE_COMMAND_REGISTER (Parent, EFI_PCI_COMMAND_MEMORY_SPACE);
|
|
} else {
|
|
//
|
|
// Cover 32bit MMIO for devices below the bridge.
|
|
//
|
|
if (Parent->PciBar[PPB_MEM32_RANGE].Length == 0) {
|
|
//
|
|
// When devices under the bridge contains Option ROM and doesn't require 32bit MMIO.
|
|
//
|
|
Base = (UINT16) gAllOne;
|
|
Limit = (UINT16) gAllZero;
|
|
} else {
|
|
Base = (UINT16) ((UINT32) Parent->PciBar[PPB_MEM32_RANGE].BaseAddress >> 16);
|
|
Limit = (UINT16) ((UINT32) (Parent->PciBar[PPB_MEM32_RANGE].BaseAddress
|
|
+ Parent->PciBar[PPB_MEM32_RANGE].Length - 1) >> 16);
|
|
}
|
|
PciIo->Pci.Write (PciIo, EfiPciIoWidthUint16, OFFSET_OF (PCI_TYPE01, Bridge.MemoryBase), 1, &Base);
|
|
PciIo->Pci.Write (PciIo, EfiPciIoWidthUint16, OFFSET_OF (PCI_TYPE01, Bridge.MemoryLimit), 1, &Limit);
|
|
|
|
PCI_DISABLE_COMMAND_REGISTER (Parent, EFI_PCI_COMMAND_MEMORY_SPACE);
|
|
}
|
|
|
|
Parent = Parent->Parent;
|
|
}
|
|
}
|
|
|
|
/**
|
|
Test whether resource exists for a bridge.
|
|
|
|
@param Bridge Point to resource node for a bridge.
|
|
|
|
@retval TRUE There is resource on the given bridge.
|
|
@retval FALSE There isn't resource on the given bridge.
|
|
|
|
**/
|
|
BOOLEAN
|
|
ResourceRequestExisted (
|
|
IN PCI_RESOURCE_NODE *Bridge
|
|
)
|
|
{
|
|
if (Bridge != NULL) {
|
|
if (!IsListEmpty (&Bridge->ChildList) || Bridge->Length != 0) {
|
|
return TRUE;
|
|
}
|
|
}
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
/**
|
|
Initialize resource pool structure.
|
|
|
|
@param ResourcePool Point to resource pool structure. This pool
|
|
is reset to all zero when returned.
|
|
@param ResourceType Type of resource.
|
|
|
|
**/
|
|
VOID
|
|
InitializeResourcePool (
|
|
IN OUT PCI_RESOURCE_NODE *ResourcePool,
|
|
IN PCI_BAR_TYPE ResourceType
|
|
)
|
|
{
|
|
ZeroMem (ResourcePool, sizeof (PCI_RESOURCE_NODE));
|
|
ResourcePool->ResType = ResourceType;
|
|
ResourcePool->Signature = PCI_RESOURCE_SIGNATURE;
|
|
InitializeListHead (&ResourcePool->ChildList);
|
|
}
|
|
|
|
/**
|
|
Destroy given resource tree.
|
|
|
|
@param Bridge PCI resource root node of resource tree.
|
|
|
|
**/
|
|
VOID
|
|
DestroyResourceTree (
|
|
IN PCI_RESOURCE_NODE *Bridge
|
|
)
|
|
{
|
|
PCI_RESOURCE_NODE *Temp;
|
|
LIST_ENTRY *CurrentLink;
|
|
|
|
while (!IsListEmpty (&Bridge->ChildList)) {
|
|
|
|
CurrentLink = Bridge->ChildList.ForwardLink;
|
|
|
|
Temp = RESOURCE_NODE_FROM_LINK (CurrentLink);
|
|
ASSERT (Temp);
|
|
|
|
RemoveEntryList (CurrentLink);
|
|
|
|
if (IS_PCI_BRIDGE (&(Temp->PciDev->Pci))) {
|
|
DestroyResourceTree (Temp);
|
|
}
|
|
|
|
FreePool (Temp);
|
|
}
|
|
}
|
|
|
|
/**
|
|
Insert resource padding for P2C.
|
|
|
|
@param PciDev Pci device instance.
|
|
@param IoNode Resource info node for IO.
|
|
@param Mem32Node Resource info node for 32-bit memory.
|
|
@param PMem32Node Resource info node for 32-bit Prefetchable Memory.
|
|
@param Mem64Node Resource info node for 64-bit memory.
|
|
@param PMem64Node Resource info node for 64-bit Prefetchable Memory.
|
|
|
|
**/
|
|
VOID
|
|
ResourcePaddingForCardBusBridge (
|
|
IN PCI_IO_DEVICE *PciDev,
|
|
IN PCI_RESOURCE_NODE *IoNode,
|
|
IN PCI_RESOURCE_NODE *Mem32Node,
|
|
IN PCI_RESOURCE_NODE *PMem32Node,
|
|
IN PCI_RESOURCE_NODE *Mem64Node,
|
|
IN PCI_RESOURCE_NODE *PMem64Node
|
|
)
|
|
{
|
|
PCI_RESOURCE_NODE *Node;
|
|
|
|
Node = NULL;
|
|
|
|
//
|
|
// Memory Base/Limit Register 0
|
|
// Bar 1 decodes memory range 0
|
|
//
|
|
Node = CreateResourceNode (
|
|
PciDev,
|
|
0x2000000,
|
|
0x1ffffff,
|
|
1,
|
|
PciBarTypeMem32,
|
|
PciResUsagePadding
|
|
);
|
|
|
|
InsertResourceNode (
|
|
Mem32Node,
|
|
Node
|
|
);
|
|
|
|
//
|
|
// Memory Base/Limit Register 1
|
|
// Bar 2 decodes memory range1
|
|
//
|
|
Node = CreateResourceNode (
|
|
PciDev,
|
|
0x2000000,
|
|
0x1ffffff,
|
|
2,
|
|
PciBarTypePMem32,
|
|
PciResUsagePadding
|
|
);
|
|
|
|
InsertResourceNode (
|
|
PMem32Node,
|
|
Node
|
|
);
|
|
|
|
//
|
|
// Io Base/Limit
|
|
// Bar 3 decodes io range 0
|
|
//
|
|
Node = CreateResourceNode (
|
|
PciDev,
|
|
0x100,
|
|
0xff,
|
|
3,
|
|
PciBarTypeIo16,
|
|
PciResUsagePadding
|
|
);
|
|
|
|
InsertResourceNode (
|
|
IoNode,
|
|
Node
|
|
);
|
|
|
|
//
|
|
// Io Base/Limit
|
|
// Bar 4 decodes io range 0
|
|
//
|
|
Node = CreateResourceNode (
|
|
PciDev,
|
|
0x100,
|
|
0xff,
|
|
4,
|
|
PciBarTypeIo16,
|
|
PciResUsagePadding
|
|
);
|
|
|
|
InsertResourceNode (
|
|
IoNode,
|
|
Node
|
|
);
|
|
}
|
|
|
|
/**
|
|
Program PCI Card device register for given resource node.
|
|
|
|
@param Base Base address of PCI Card device to be programmed.
|
|
@param Node Given resource node.
|
|
|
|
**/
|
|
VOID
|
|
ProgramP2C (
|
|
IN UINT64 Base,
|
|
IN PCI_RESOURCE_NODE *Node
|
|
)
|
|
{
|
|
EFI_PCI_IO_PROTOCOL *PciIo;
|
|
UINT64 Address;
|
|
UINT64 TempAddress;
|
|
UINT16 BridgeControl;
|
|
|
|
Address = 0;
|
|
PciIo = &(Node->PciDev->PciIo);
|
|
|
|
Address = Base + Node->Offset;
|
|
|
|
//
|
|
// Indicate pci bus driver has allocated
|
|
// resource for this device
|
|
// It might be a temporary solution here since
|
|
// pci device could have multiple bar
|
|
//
|
|
Node->PciDev->Allocated = TRUE;
|
|
|
|
switch (Node->Bar) {
|
|
|
|
case P2C_BAR_0:
|
|
PciIo->Pci.Write (
|
|
PciIo,
|
|
EfiPciIoWidthUint32,
|
|
(Node->PciDev->PciBar[Node->Bar]).Offset,
|
|
1,
|
|
&Address
|
|
);
|
|
|
|
Node->PciDev->PciBar[Node->Bar].BaseAddress = Address;
|
|
Node->PciDev->PciBar[Node->Bar].Length = Node->Length;
|
|
break;
|
|
|
|
case P2C_MEM_1:
|
|
PciIo->Pci.Write (
|
|
PciIo,
|
|
EfiPciIoWidthUint32,
|
|
PCI_CARD_MEMORY_BASE_0,
|
|
1,
|
|
&Address
|
|
);
|
|
|
|
TempAddress = Address + Node->Length - 1;
|
|
PciIo->Pci.Write (
|
|
PciIo,
|
|
EfiPciIoWidthUint32,
|
|
PCI_CARD_MEMORY_LIMIT_0,
|
|
1,
|
|
&TempAddress
|
|
);
|
|
|
|
if (Node->ResType == PciBarTypeMem32) {
|
|
//
|
|
// Set non-prefetchable bit
|
|
//
|
|
PciIo->Pci.Read (
|
|
PciIo,
|
|
EfiPciIoWidthUint16,
|
|
PCI_CARD_BRIDGE_CONTROL,
|
|
1,
|
|
&BridgeControl
|
|
);
|
|
|
|
BridgeControl &= (UINT16) ~PCI_CARD_PREFETCHABLE_MEMORY_0_ENABLE;
|
|
PciIo->Pci.Write (
|
|
PciIo,
|
|
EfiPciIoWidthUint16,
|
|
PCI_CARD_BRIDGE_CONTROL,
|
|
1,
|
|
&BridgeControl
|
|
);
|
|
|
|
} else {
|
|
//
|
|
// Set prefetchable bit
|
|
//
|
|
PciIo->Pci.Read (
|
|
PciIo,
|
|
EfiPciIoWidthUint16,
|
|
PCI_CARD_BRIDGE_CONTROL,
|
|
1,
|
|
&BridgeControl
|
|
);
|
|
|
|
BridgeControl |= PCI_CARD_PREFETCHABLE_MEMORY_0_ENABLE;
|
|
PciIo->Pci.Write (
|
|
PciIo,
|
|
EfiPciIoWidthUint16,
|
|
PCI_CARD_BRIDGE_CONTROL,
|
|
1,
|
|
&BridgeControl
|
|
);
|
|
}
|
|
|
|
Node->PciDev->PciBar[Node->Bar].BaseAddress = Address;
|
|
Node->PciDev->PciBar[Node->Bar].Length = Node->Length;
|
|
Node->PciDev->PciBar[Node->Bar].BarType = Node->ResType;
|
|
|
|
break;
|
|
|
|
case P2C_MEM_2:
|
|
PciIo->Pci.Write (
|
|
PciIo,
|
|
EfiPciIoWidthUint32,
|
|
PCI_CARD_MEMORY_BASE_1,
|
|
1,
|
|
&Address
|
|
);
|
|
|
|
TempAddress = Address + Node->Length - 1;
|
|
|
|
PciIo->Pci.Write (
|
|
PciIo,
|
|
EfiPciIoWidthUint32,
|
|
PCI_CARD_MEMORY_LIMIT_1,
|
|
1,
|
|
&TempAddress
|
|
);
|
|
|
|
if (Node->ResType == PciBarTypeMem32) {
|
|
|
|
//
|
|
// Set non-prefetchable bit
|
|
//
|
|
PciIo->Pci.Read (
|
|
PciIo,
|
|
EfiPciIoWidthUint16,
|
|
PCI_CARD_BRIDGE_CONTROL,
|
|
1,
|
|
&BridgeControl
|
|
);
|
|
|
|
BridgeControl &= (UINT16) ~(PCI_CARD_PREFETCHABLE_MEMORY_1_ENABLE);
|
|
PciIo->Pci.Write (
|
|
PciIo,
|
|
EfiPciIoWidthUint16,
|
|
PCI_CARD_BRIDGE_CONTROL,
|
|
1,
|
|
&BridgeControl
|
|
);
|
|
|
|
} else {
|
|
|
|
//
|
|
// Set prefetchable bit
|
|
//
|
|
PciIo->Pci.Read (
|
|
PciIo,
|
|
EfiPciIoWidthUint16,
|
|
PCI_CARD_BRIDGE_CONTROL,
|
|
1,
|
|
&BridgeControl
|
|
);
|
|
|
|
BridgeControl |= PCI_CARD_PREFETCHABLE_MEMORY_1_ENABLE;
|
|
PciIo->Pci.Write (
|
|
PciIo,
|
|
EfiPciIoWidthUint16,
|
|
PCI_CARD_BRIDGE_CONTROL,
|
|
1,
|
|
&BridgeControl
|
|
);
|
|
}
|
|
|
|
Node->PciDev->PciBar[Node->Bar].BaseAddress = Address;
|
|
Node->PciDev->PciBar[Node->Bar].Length = Node->Length;
|
|
Node->PciDev->PciBar[Node->Bar].BarType = Node->ResType;
|
|
break;
|
|
|
|
case P2C_IO_1:
|
|
PciIo->Pci.Write (
|
|
PciIo,
|
|
EfiPciIoWidthUint32,
|
|
PCI_CARD_IO_BASE_0_LOWER,
|
|
1,
|
|
&Address
|
|
);
|
|
|
|
TempAddress = Address + Node->Length - 1;
|
|
PciIo->Pci.Write (
|
|
PciIo,
|
|
EfiPciIoWidthUint32,
|
|
PCI_CARD_IO_LIMIT_0_LOWER,
|
|
1,
|
|
&TempAddress
|
|
);
|
|
|
|
Node->PciDev->PciBar[Node->Bar].BaseAddress = Address;
|
|
Node->PciDev->PciBar[Node->Bar].Length = Node->Length;
|
|
Node->PciDev->PciBar[Node->Bar].BarType = Node->ResType;
|
|
|
|
break;
|
|
|
|
case P2C_IO_2:
|
|
PciIo->Pci.Write (
|
|
PciIo,
|
|
EfiPciIoWidthUint32,
|
|
PCI_CARD_IO_BASE_1_LOWER,
|
|
1,
|
|
&Address
|
|
);
|
|
|
|
TempAddress = Address + Node->Length - 1;
|
|
PciIo->Pci.Write (
|
|
PciIo,
|
|
EfiPciIoWidthUint32,
|
|
PCI_CARD_IO_LIMIT_1_LOWER,
|
|
1,
|
|
&TempAddress
|
|
);
|
|
|
|
Node->PciDev->PciBar[Node->Bar].BaseAddress = Address;
|
|
Node->PciDev->PciBar[Node->Bar].Length = Node->Length;
|
|
Node->PciDev->PciBar[Node->Bar].BarType = Node->ResType;
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
/**
|
|
Create padding resource node.
|
|
|
|
@param PciDev Pci device instance.
|
|
@param IoNode Resource info node for IO.
|
|
@param Mem32Node Resource info node for 32-bit memory.
|
|
@param PMem32Node Resource info node for 32-bit Prefetchable Memory.
|
|
@param Mem64Node Resource info node for 64-bit memory.
|
|
@param PMem64Node Resource info node for 64-bit Prefetchable Memory.
|
|
|
|
**/
|
|
VOID
|
|
ApplyResourcePadding (
|
|
IN PCI_IO_DEVICE *PciDev,
|
|
IN PCI_RESOURCE_NODE *IoNode,
|
|
IN PCI_RESOURCE_NODE *Mem32Node,
|
|
IN PCI_RESOURCE_NODE *PMem32Node,
|
|
IN PCI_RESOURCE_NODE *Mem64Node,
|
|
IN PCI_RESOURCE_NODE *PMem64Node
|
|
)
|
|
{
|
|
EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR *Ptr;
|
|
PCI_RESOURCE_NODE *Node;
|
|
UINT8 DummyBarIndex;
|
|
|
|
DummyBarIndex = 0;
|
|
Ptr = PciDev->ResourcePaddingDescriptors;
|
|
|
|
while (((EFI_ACPI_END_TAG_DESCRIPTOR *) Ptr)->Desc != ACPI_END_TAG_DESCRIPTOR) {
|
|
|
|
if (Ptr->Desc == ACPI_ADDRESS_SPACE_DESCRIPTOR && Ptr->ResType == ACPI_ADDRESS_SPACE_TYPE_IO) {
|
|
if (Ptr->AddrLen != 0) {
|
|
|
|
Node = CreateResourceNode (
|
|
PciDev,
|
|
Ptr->AddrLen,
|
|
Ptr->AddrRangeMax,
|
|
DummyBarIndex,
|
|
PciBarTypeIo16,
|
|
PciResUsagePadding
|
|
);
|
|
InsertResourceNode (
|
|
IoNode,
|
|
Node
|
|
);
|
|
}
|
|
|
|
Ptr++;
|
|
continue;
|
|
}
|
|
|
|
if (Ptr->Desc == ACPI_ADDRESS_SPACE_DESCRIPTOR && Ptr->ResType == ACPI_ADDRESS_SPACE_TYPE_MEM) {
|
|
|
|
if (Ptr->AddrSpaceGranularity == 32) {
|
|
|
|
//
|
|
// prefetchable
|
|
//
|
|
if (Ptr->SpecificFlag == 0x6) {
|
|
if (Ptr->AddrLen != 0) {
|
|
Node = CreateResourceNode (
|
|
PciDev,
|
|
Ptr->AddrLen,
|
|
Ptr->AddrRangeMax,
|
|
DummyBarIndex,
|
|
PciBarTypePMem32,
|
|
PciResUsagePadding
|
|
);
|
|
InsertResourceNode (
|
|
PMem32Node,
|
|
Node
|
|
);
|
|
}
|
|
|
|
Ptr++;
|
|
continue;
|
|
}
|
|
|
|
//
|
|
// Non-prefetchable
|
|
//
|
|
if (Ptr->SpecificFlag == 0) {
|
|
if (Ptr->AddrLen != 0) {
|
|
Node = CreateResourceNode (
|
|
PciDev,
|
|
Ptr->AddrLen,
|
|
Ptr->AddrRangeMax,
|
|
DummyBarIndex,
|
|
PciBarTypeMem32,
|
|
PciResUsagePadding
|
|
);
|
|
InsertResourceNode (
|
|
Mem32Node,
|
|
Node
|
|
);
|
|
}
|
|
|
|
Ptr++;
|
|
continue;
|
|
}
|
|
}
|
|
|
|
if (Ptr->AddrSpaceGranularity == 64) {
|
|
|
|
//
|
|
// prefetchable
|
|
//
|
|
if (Ptr->SpecificFlag == 0x6) {
|
|
if (Ptr->AddrLen != 0) {
|
|
Node = CreateResourceNode (
|
|
PciDev,
|
|
Ptr->AddrLen,
|
|
Ptr->AddrRangeMax,
|
|
DummyBarIndex,
|
|
PciBarTypePMem64,
|
|
PciResUsagePadding
|
|
);
|
|
InsertResourceNode (
|
|
PMem64Node,
|
|
Node
|
|
);
|
|
}
|
|
|
|
Ptr++;
|
|
continue;
|
|
}
|
|
|
|
//
|
|
// Non-prefetchable
|
|
//
|
|
if (Ptr->SpecificFlag == 0) {
|
|
if (Ptr->AddrLen != 0) {
|
|
Node = CreateResourceNode (
|
|
PciDev,
|
|
Ptr->AddrLen,
|
|
Ptr->AddrRangeMax,
|
|
DummyBarIndex,
|
|
PciBarTypeMem64,
|
|
PciResUsagePadding
|
|
);
|
|
InsertResourceNode (
|
|
Mem64Node,
|
|
Node
|
|
);
|
|
}
|
|
|
|
Ptr++;
|
|
continue;
|
|
}
|
|
}
|
|
}
|
|
|
|
Ptr++;
|
|
}
|
|
}
|
|
|
|
/**
|
|
Get padding resource for PCI-PCI bridge.
|
|
|
|
@param PciIoDevice PCI-PCI bridge device instance.
|
|
|
|
@note Feature flag PcdPciBusHotplugDeviceSupport determines
|
|
whether need to pad resource for them.
|
|
**/
|
|
VOID
|
|
GetResourcePaddingPpb (
|
|
IN PCI_IO_DEVICE *PciIoDevice
|
|
)
|
|
{
|
|
if (gPciHotPlugInit != NULL && FeaturePcdGet (PcdPciBusHotplugDeviceSupport)) {
|
|
if (PciIoDevice->ResourcePaddingDescriptors == NULL) {
|
|
GetResourcePaddingForHpb (PciIoDevice);
|
|
}
|
|
}
|
|
}
|
|
|