2 PCI resouces support functions implemntation for PCI Bus module.
4 Copyright (c) 2006 - 2009, Intel Corporation
5 All rights reserved. This program and the accompanying materials
6 are licensed and made available under the terms and conditions of the BSD License
7 which accompanies this distribution. The full text of the license may be found at
8 http://opensource.org/licenses/bsd-license.php
10 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
11 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
18 The function is used to skip VGA range.
20 @param Start Returned start address including VGA range.
21 @param Length The length of VGA range.
35 ASSERT (Start
!= NULL
);
37 // For legacy VGA, bit 10 to bit 15 is not decoded
42 StartOffset
= Original
& Mask
;
43 LimitOffset
= ((*Start
) + Length
- 1) & Mask
;
44 if (LimitOffset
>= VGABASE1
) {
45 *Start
= *Start
- StartOffset
+ VGALIMIT2
+ 1;
50 This function is used to skip ISA aliasing aperture.
52 @param Start Returned start address including ISA aliasing aperture.
53 @param Length The length of ISA aliasing aperture.
57 SkipIsaAliasAperture (
68 ASSERT (Start
!= NULL
);
71 // For legacy ISA, bit 10 to bit 15 is not decoded
76 StartOffset
= Original
& Mask
;
77 LimitOffset
= ((*Start
) + Length
- 1) & Mask
;
79 if (LimitOffset
>= ISABASE
) {
80 *Start
= *Start
- StartOffset
+ ISALIMIT
+ 1;
85 This function inserts a resource node into the resource list.
86 The resource list is sorted in descend order.
88 @param Bridge PCI resource node for bridge.
89 @param ResNode Resource node want to be inserted.
94 IN OUT PCI_RESOURCE_NODE
*Bridge
,
95 IN PCI_RESOURCE_NODE
*ResNode
98 LIST_ENTRY
*CurrentLink
;
99 PCI_RESOURCE_NODE
*Temp
;
100 UINT64 ResNodeAlignRest
;
101 UINT64 TempAlignRest
;
103 ASSERT (Bridge
!= NULL
);
104 ASSERT (ResNode
!= NULL
);
106 InsertHeadList (&Bridge
->ChildList
, &ResNode
->Link
);
108 CurrentLink
= Bridge
->ChildList
.ForwardLink
->ForwardLink
;
109 while (CurrentLink
!= &Bridge
->ChildList
) {
110 Temp
= RESOURCE_NODE_FROM_LINK (CurrentLink
);
112 if (ResNode
->Alignment
> Temp
->Alignment
) {
114 } else if (ResNode
->Alignment
== Temp
->Alignment
) {
115 ResNodeAlignRest
= ResNode
->Length
& ResNode
->Alignment
;
116 TempAlignRest
= Temp
->Length
& Temp
->Alignment
;
117 if ((ResNodeAlignRest
== 0) || (ResNodeAlignRest
>= TempAlignRest
)) {
122 SwapListEntries (&ResNode
->Link
, CurrentLink
);
124 CurrentLink
= ResNode
->Link
.ForwardLink
;
129 This routine is used to merge two different resource trees in need of
132 For example, if an upstream PPB doesn't support,
133 prefetchable memory decoding, the PCI bus driver will choose to call this function
134 to merge prefectchable memory resource list into normal memory list.
136 If the TypeMerge is TRUE, Res resource type is changed to the type of destination resource
138 If Dst is NULL or Res is NULL, ASSERT ().
140 @param Dst Point to destination resource tree.
141 @param Res Point to source resource tree.
142 @param TypeMerge If the TypeMerge is TRUE, Res resource type is changed to the type of
143 destination resource type.
148 IN PCI_RESOURCE_NODE
*Dst
,
149 IN PCI_RESOURCE_NODE
*Res
,
154 LIST_ENTRY
*CurrentLink
;
155 PCI_RESOURCE_NODE
*Temp
;
157 ASSERT (Dst
!= NULL
);
158 ASSERT (Res
!= NULL
);
160 while (!IsListEmpty (&Res
->ChildList
)) {
161 CurrentLink
= Res
->ChildList
.ForwardLink
;
163 Temp
= RESOURCE_NODE_FROM_LINK (CurrentLink
);
166 Temp
->ResType
= Dst
->ResType
;
169 RemoveEntryList (CurrentLink
);
170 InsertResourceNode (Dst
, Temp
);
175 This function is used to calculate the IO16 aperture
178 @param Bridge PCI resource node for bridge.
182 CalculateApertureIo16 (
183 IN PCI_RESOURCE_NODE
*Bridge
188 LIST_ENTRY
*CurrentLink
;
189 PCI_RESOURCE_NODE
*Node
;
193 EFI_PCI_PLATFORM_POLICY PciPolicy
;
196 // Always assume there is ISA device and VGA device on the platform
197 // will be customized later
203 // Check PciPlatform policy
205 if (gPciPlatformProtocol
!= NULL
) {
206 Status
= gPciPlatformProtocol
->GetPlatformPolicy (
207 gPciPlatformProtocol
,
210 if (!EFI_ERROR (Status
)) {
211 if ((PciPolicy
& EFI_RESERVE_ISA_IO_ALIAS
) != 0) {
214 if ((PciPolicy
& EFI_RESERVE_VGA_IO_ALIAS
) != 0) {
218 } else if (gPciOverrideProtocol
!= NULL
) {
219 Status
= gPciOverrideProtocol
->GetPlatformPolicy (
220 gPciOverrideProtocol
,
223 if (!EFI_ERROR (Status
)) {
224 if ((PciPolicy
& EFI_RESERVE_ISA_IO_ALIAS
) != 0) {
227 if ((PciPolicy
& EFI_RESERVE_VGA_IO_ALIAS
) != 0) {
235 if (Bridge
== NULL
) {
239 CurrentLink
= Bridge
->ChildList
.ForwardLink
;
242 // Assume the bridge is aligned
244 while (CurrentLink
!= &Bridge
->ChildList
) {
246 Node
= RESOURCE_NODE_FROM_LINK (CurrentLink
);
249 // Consider the aperture alignment
251 Offset
= Aperture
& (Node
->Alignment
);
255 Aperture
= Aperture
+ (Node
->Alignment
+ 1) - Offset
;
260 // IsaEnable and VGAEnable can not be implemented now.
261 // If both of them are enabled, then the IO resource would
262 // become too limited to meet the requirement of most of devices.
264 if (IsaEnable
|| VGAEnable
) {
265 if (!IS_PCI_BRIDGE (&(Node
->PciDev
->Pci
)) && !IS_CARDBUS_BRIDGE (&(Node
->PciDev
->Pci
))) {
267 // Check if there is need to support ISA/VGA decoding
268 // If so, we need to avoid isa/vga aliasing range
271 SkipIsaAliasAperture (
275 Offset
= Aperture
& (Node
->Alignment
);
277 Aperture
= Aperture
+ (Node
->Alignment
+ 1) - Offset
;
279 } else if (VGAEnable
) {
284 Offset
= Aperture
& (Node
->Alignment
);
286 Aperture
= Aperture
+ (Node
->Alignment
+ 1) - Offset
;
292 Node
->Offset
= Aperture
;
295 // Increment aperture by the length of node
297 Aperture
+= Node
->Length
;
299 CurrentLink
= CurrentLink
->ForwardLink
;
303 // At last, adjust the aperture with the bridge's
306 Offset
= Aperture
& (Bridge
->Alignment
);
309 Aperture
= Aperture
+ (Bridge
->Alignment
+ 1) - Offset
;
312 Bridge
->Length
= Aperture
;
314 // At last, adjust the bridge's alignment to the first child's alignment
315 // if the bridge has at least one child
317 CurrentLink
= Bridge
->ChildList
.ForwardLink
;
318 if (CurrentLink
!= &Bridge
->ChildList
) {
319 Node
= RESOURCE_NODE_FROM_LINK (CurrentLink
);
320 if (Node
->Alignment
> Bridge
->Alignment
) {
321 Bridge
->Alignment
= Node
->Alignment
;
327 This function is used to calculate the resource aperture
328 for a given bridge device.
330 @param Bridge PCI resouce node for given bridge device.
334 CalculateResourceAperture (
335 IN PCI_RESOURCE_NODE
*Bridge
339 LIST_ENTRY
*CurrentLink
;
340 PCI_RESOURCE_NODE
*Node
;
346 if (Bridge
== NULL
) {
350 if (Bridge
->ResType
== PciBarTypeIo16
) {
352 CalculateApertureIo16 (Bridge
);
356 CurrentLink
= Bridge
->ChildList
.ForwardLink
;
359 // Assume the bridge is aligned
361 while (CurrentLink
!= &Bridge
->ChildList
) {
363 Node
= RESOURCE_NODE_FROM_LINK (CurrentLink
);
366 // Apply padding resource if available
368 Offset
= Aperture
& (Node
->Alignment
);
372 Aperture
= Aperture
+ (Node
->Alignment
+ 1) - Offset
;
377 // Recode current aperture as a offset
378 // this offset will be used in future real allocation
380 Node
->Offset
= Aperture
;
383 // Increment aperture by the length of node
385 Aperture
+= Node
->Length
;
388 // Consider the aperture alignment
390 CurrentLink
= CurrentLink
->ForwardLink
;
394 // At last, adjust the aperture with the bridge's
397 Offset
= Aperture
& (Bridge
->Alignment
);
399 Aperture
= Aperture
+ (Bridge
->Alignment
+ 1) - Offset
;
403 // If the bridge has already padded the resource and the
404 // amount of padded resource is larger, then keep the
407 if (Bridge
->Length
< Aperture
) {
408 Bridge
->Length
= Aperture
;
412 // At last, adjust the bridge's alignment to the first child's alignment
413 // if the bridge has at least one child
415 CurrentLink
= Bridge
->ChildList
.ForwardLink
;
416 if (CurrentLink
!= &Bridge
->ChildList
) {
417 Node
= RESOURCE_NODE_FROM_LINK (CurrentLink
);
418 if (Node
->Alignment
> Bridge
->Alignment
) {
419 Bridge
->Alignment
= Node
->Alignment
;
425 Get IO/Memory resource infor for given PCI device.
427 @param PciDev Pci device instance.
428 @param IoNode Resource info node for IO .
429 @param Mem32Node Resource info node for 32-bit memory.
430 @param PMem32Node Resource info node for 32-bit Prefetchable Memory.
431 @param Mem64Node Resource info node for 64-bit memory.
432 @param PMem64Node Resource info node for 64-bit Prefetchable Memory.
436 GetResourceFromDevice (
437 IN PCI_IO_DEVICE
*PciDev
,
438 IN OUT PCI_RESOURCE_NODE
*IoNode
,
439 IN OUT PCI_RESOURCE_NODE
*Mem32Node
,
440 IN OUT PCI_RESOURCE_NODE
*PMem32Node
,
441 IN OUT PCI_RESOURCE_NODE
*Mem64Node
,
442 IN OUT PCI_RESOURCE_NODE
*PMem64Node
447 PCI_RESOURCE_NODE
*Node
;
448 BOOLEAN ResourceRequested
;
451 ResourceRequested
= FALSE
;
453 for (Index
= 0; Index
< PCI_MAX_BAR
; Index
++) {
455 switch ((PciDev
->PciBar
)[Index
].BarType
) {
457 case PciBarTypeMem32
:
459 Node
= CreateResourceNode (
461 (PciDev
->PciBar
)[Index
].Length
,
462 (PciDev
->PciBar
)[Index
].Alignment
,
473 ResourceRequested
= TRUE
;
476 case PciBarTypeMem64
:
478 Node
= CreateResourceNode (
480 (PciDev
->PciBar
)[Index
].Length
,
481 (PciDev
->PciBar
)[Index
].Alignment
,
492 ResourceRequested
= TRUE
;
495 case PciBarTypePMem64
:
497 Node
= CreateResourceNode (
499 (PciDev
->PciBar
)[Index
].Length
,
500 (PciDev
->PciBar
)[Index
].Alignment
,
511 ResourceRequested
= TRUE
;
514 case PciBarTypePMem32
:
516 Node
= CreateResourceNode (
518 (PciDev
->PciBar
)[Index
].Length
,
519 (PciDev
->PciBar
)[Index
].Alignment
,
529 ResourceRequested
= TRUE
;
535 Node
= CreateResourceNode (
537 (PciDev
->PciBar
)[Index
].Length
,
538 (PciDev
->PciBar
)[Index
].Alignment
,
548 ResourceRequested
= TRUE
;
551 case PciBarTypeUnknown
:
562 for (Index
= 0; Index
< PCI_MAX_BAR
; Index
++) {
564 switch ((PciDev
->VfPciBar
)[Index
].BarType
) {
566 case PciBarTypeMem32
:
568 Node
= CreateVfResourceNode (
570 (PciDev
->VfPciBar
)[Index
].Length
,
571 (PciDev
->VfPciBar
)[Index
].Alignment
,
584 case PciBarTypeMem64
:
586 Node
= CreateVfResourceNode (
588 (PciDev
->VfPciBar
)[Index
].Length
,
589 (PciDev
->VfPciBar
)[Index
].Alignment
,
602 case PciBarTypePMem64
:
604 Node
= CreateVfResourceNode (
606 (PciDev
->VfPciBar
)[Index
].Length
,
607 (PciDev
->VfPciBar
)[Index
].Alignment
,
620 case PciBarTypePMem32
:
622 Node
= CreateVfResourceNode (
624 (PciDev
->VfPciBar
)[Index
].Length
,
625 (PciDev
->VfPciBar
)[Index
].Alignment
,
641 case PciBarTypeUnknown
:
648 // If there is no resource requested from this device,
649 // then we indicate this device has been allocated naturally.
651 if (!ResourceRequested
) {
652 PciDev
->Allocated
= TRUE
;
657 This function is used to create a resource node.
659 @param PciDev Pci device instance.
660 @param Length Length of Io/Memory resource.
661 @param Alignment Alignment of resource.
662 @param Bar Bar index.
663 @param ResType Type of resource: IO/Memory.
664 @param ResUsage Resource usage.
666 @return PCI resource node created for given PCI device.
667 NULL means PCI resource node is not created.
672 IN PCI_IO_DEVICE
*PciDev
,
676 IN PCI_BAR_TYPE ResType
,
677 IN PCI_RESOURCE_USAGE ResUsage
680 PCI_RESOURCE_NODE
*Node
;
684 Node
= AllocateZeroPool (sizeof (PCI_RESOURCE_NODE
));
685 ASSERT (Node
!= NULL
);
690 Node
->Signature
= PCI_RESOURCE_SIGNATURE
;
691 Node
->PciDev
= PciDev
;
692 Node
->Length
= Length
;
693 Node
->Alignment
= Alignment
;
695 Node
->ResType
= ResType
;
696 Node
->Reserved
= FALSE
;
697 Node
->ResourceUsage
= ResUsage
;
698 InitializeListHead (&Node
->ChildList
);
704 This function is used to create a IOV VF resource node.
706 @param PciDev Pci device instance.
707 @param Length Length of Io/Memory resource.
708 @param Alignment Alignment of resource.
709 @param Bar Bar index.
710 @param ResType Type of resource: IO/Memory.
711 @param ResUsage Resource usage.
713 @return PCI resource node created for given VF PCI device.
714 NULL means PCI resource node is not created.
718 CreateVfResourceNode (
719 IN PCI_IO_DEVICE
*PciDev
,
723 IN PCI_BAR_TYPE ResType
,
724 IN PCI_RESOURCE_USAGE ResUsage
727 PCI_RESOURCE_NODE
*Node
;
731 "PCI-IOV B%x.D%x.F%x - VfResource (Bar - 0x%x) (Type - 0x%x) (Length - 0x%x)\n",
732 (UINTN
)PciDev
->BusNumber
,
733 (UINTN
)PciDev
->DeviceNumber
,
734 (UINTN
)PciDev
->FunctionNumber
,
740 Node
= CreateResourceNode (PciDev
, Length
, Alignment
, Bar
, ResType
, ResUsage
);
745 Node
->Virtual
= TRUE
;
751 This function is used to extract resource request from
754 @param Bridge Pci device instance.
755 @param IoNode Resource info node for IO.
756 @param Mem32Node Resource info node for 32-bit memory.
757 @param PMem32Node Resource info node for 32-bit Prefetchable Memory.
758 @param Mem64Node Resource info node for 64-bit memory.
759 @param PMem64Node Resource info node for 64-bit Prefetchable Memory.
764 IN PCI_IO_DEVICE
*Bridge
,
765 IN OUT PCI_RESOURCE_NODE
*IoNode
,
766 IN OUT PCI_RESOURCE_NODE
*Mem32Node
,
767 IN OUT PCI_RESOURCE_NODE
*PMem32Node
,
768 IN OUT PCI_RESOURCE_NODE
*Mem64Node
,
769 IN OUT PCI_RESOURCE_NODE
*PMem64Node
773 PCI_RESOURCE_NODE
*IoBridge
;
774 PCI_RESOURCE_NODE
*Mem32Bridge
;
775 PCI_RESOURCE_NODE
*PMem32Bridge
;
776 PCI_RESOURCE_NODE
*Mem64Bridge
;
777 PCI_RESOURCE_NODE
*PMem64Bridge
;
778 LIST_ENTRY
*CurrentLink
;
780 CurrentLink
= Bridge
->ChildList
.ForwardLink
;
782 while (CurrentLink
!= NULL
&& CurrentLink
!= &Bridge
->ChildList
) {
784 Temp
= PCI_IO_DEVICE_FROM_LINK (CurrentLink
);
787 // Create resource nodes for this device by scanning the
788 // Bar array in the device private data
789 // If the upstream bridge doesn't support this device,
790 // no any resource node will be created for this device
792 GetResourceFromDevice (
801 if (IS_PCI_BRIDGE (&Temp
->Pci
)) {
804 // If the device has children, create a bridge resource node for this PPB
805 // Note: For PPB, memory aperture is aligned with 1MB and IO aperture
806 // is aligned with 4KB (smaller alignments may be supported).
808 IoBridge
= CreateResourceNode (
811 Temp
->BridgeIoAlignment
,
817 Mem32Bridge
= CreateResourceNode (
826 PMem32Bridge
= CreateResourceNode (
835 Mem64Bridge
= CreateResourceNode (
844 PMem64Bridge
= CreateResourceNode (
854 // Recursively create resouce map on this bridge
865 if (ResourceRequestExisted (IoBridge
)) {
876 // If there is node under this resource bridge,
877 // then calculate bridge's aperture of this type
878 // and insert it into the respective resource tree.
879 // If no, delete this resource bridge
881 if (ResourceRequestExisted (Mem32Bridge
)) {
887 FreePool (Mem32Bridge
);
892 // If there is node under this resource bridge,
893 // then calculate bridge's aperture of this type
894 // and insert it into the respective resource tree.
895 // If no, delete this resource bridge
897 if (ResourceRequestExisted (PMem32Bridge
)) {
903 FreePool (PMem32Bridge
);
908 // If there is node under this resource bridge,
909 // then calculate bridge's aperture of this type
910 // and insert it into the respective resource tree.
911 // If no, delete this resource bridge
913 if (ResourceRequestExisted (Mem64Bridge
)) {
919 FreePool (Mem64Bridge
);
924 // If there is node under this resource bridge,
925 // then calculate bridge's aperture of this type
926 // and insert it into the respective resource tree.
927 // If no, delete this resource bridge
929 if (ResourceRequestExisted (PMem64Bridge
)) {
935 FreePool (PMem64Bridge
);
942 // If it is P2C, apply hard coded resource padding
944 if (IS_CARDBUS_BRIDGE (&Temp
->Pci
)) {
945 ResourcePaddingForCardBusBridge (
955 CurrentLink
= CurrentLink
->ForwardLink
;
959 // To do some platform specific resource padding ...
961 ResourcePaddingPolicy (
971 // Degrade resource if necessary
982 // Calculate resource aperture for this bridge device
984 CalculateResourceAperture (Mem32Node
);
985 CalculateResourceAperture (PMem32Node
);
986 CalculateResourceAperture (Mem64Node
);
987 CalculateResourceAperture (PMem64Node
);
988 CalculateResourceAperture (IoNode
);
992 This function is used to do the resource padding for a specific platform.
994 @param PciDev Pci device instance.
995 @param IoNode Resource info node for IO.
996 @param Mem32Node Resource info node for 32-bit memory.
997 @param PMem32Node Resource info node for 32-bit Prefetchable Memory.
998 @param Mem64Node Resource info node for 64-bit memory.
999 @param PMem64Node Resource info node for 64-bit Prefetchable Memory.
1003 ResourcePaddingPolicy (
1004 IN PCI_IO_DEVICE
*PciDev
,
1005 IN PCI_RESOURCE_NODE
*IoNode
,
1006 IN PCI_RESOURCE_NODE
*Mem32Node
,
1007 IN PCI_RESOURCE_NODE
*PMem32Node
,
1008 IN PCI_RESOURCE_NODE
*Mem64Node
,
1009 IN PCI_RESOURCE_NODE
*PMem64Node
1013 // Create padding resource node
1015 if (PciDev
->ResourcePaddingDescriptors
!= NULL
) {
1016 ApplyResourcePadding (
1028 This function is used to degrade resource if the upstream bridge
1029 doesn't support certain resource. Degradation path is
1030 PMEM64 -> MEM64 -> MEM32
1031 PMEM64 -> PMEM32 -> MEM32
1034 @param Bridge Pci device instance.
1035 @param Mem32Node Resource info node for 32-bit memory.
1036 @param PMem32Node Resource info node for 32-bit Prefetchable Memory.
1037 @param Mem64Node Resource info node for 64-bit memory.
1038 @param PMem64Node Resource info node for 64-bit Prefetchable Memory.
1043 IN PCI_IO_DEVICE
*Bridge
,
1044 IN PCI_RESOURCE_NODE
*Mem32Node
,
1045 IN PCI_RESOURCE_NODE
*PMem32Node
,
1046 IN PCI_RESOURCE_NODE
*Mem64Node
,
1047 IN PCI_RESOURCE_NODE
*PMem64Node
1050 PCI_IO_DEVICE
*Temp
;
1051 LIST_ENTRY
*CurrentLink
;
1052 PCI_RESOURCE_NODE
*TempNode
;
1055 // If any child device has both option ROM and 64-bit BAR, degrade its PMEM64/MEM64
1056 // requests in case that if a legacy option ROM image can not access 64-bit resources.
1058 CurrentLink
= Bridge
->ChildList
.ForwardLink
;
1059 while (CurrentLink
!= NULL
&& CurrentLink
!= &Bridge
->ChildList
) {
1060 Temp
= PCI_IO_DEVICE_FROM_LINK (CurrentLink
);
1061 if (Temp
->RomSize
!= 0) {
1062 if (!IsListEmpty (&Mem64Node
->ChildList
)) {
1063 CurrentLink
= Mem64Node
->ChildList
.ForwardLink
;
1064 while (CurrentLink
!= &Mem64Node
->ChildList
) {
1065 TempNode
= RESOURCE_NODE_FROM_LINK (CurrentLink
);
1067 if (TempNode
->PciDev
== Temp
) {
1068 RemoveEntryList (CurrentLink
);
1069 InsertResourceNode (Mem32Node
, TempNode
);
1071 CurrentLink
= TempNode
->Link
.ForwardLink
;
1075 if (!IsListEmpty (&PMem64Node
->ChildList
)) {
1076 CurrentLink
= PMem64Node
->ChildList
.ForwardLink
;
1077 while (CurrentLink
!= &PMem64Node
->ChildList
) {
1078 TempNode
= RESOURCE_NODE_FROM_LINK (CurrentLink
);
1080 if (TempNode
->PciDev
== Temp
) {
1081 RemoveEntryList (CurrentLink
);
1082 InsertResourceNode (PMem32Node
, TempNode
);
1084 CurrentLink
= TempNode
->Link
.ForwardLink
;
1089 CurrentLink
= CurrentLink
->ForwardLink
;
1093 // If firmware is in 32-bit mode,
1094 // then degrade PMEM64/MEM64 requests
1096 if (sizeof (UINTN
) <= 4) {
1110 // if the bridge does not support MEM64, degrade MEM64 to MEM32
1112 if (!BridgeSupportResourceDecode (Bridge
, EFI_BRIDGE_MEM64_DECODE_SUPPORTED
)) {
1121 // if the bridge does not support PMEM64, degrade PMEM64 to PMEM32
1123 if (!BridgeSupportResourceDecode (Bridge
, EFI_BRIDGE_PMEM64_DECODE_SUPPORTED
)) {
1132 // if both PMEM64 and PMEM32 requests from child devices, which can not be satisfied
1133 // by a P2P bridge simultaneously, keep PMEM64 and degrade PMEM32 to MEM32.
1135 if (!IsListEmpty (&PMem64Node
->ChildList
) && Bridge
->Parent
!= NULL
) {
1145 // If bridge doesn't support Pmem32
1146 // degrade it to mem32
1148 if (!BridgeSupportResourceDecode (Bridge
, EFI_BRIDGE_PMEM32_DECODE_SUPPORTED
)) {
1157 // if root bridge supports combined Pmem Mem decoding
1158 // merge these two type of resource
1160 if (BridgeSupportResourceDecode (Bridge
, EFI_BRIDGE_PMEM_MEM_COMBINE_SUPPORTED
)) {
1168 // No need to check if to degrade MEM64 after merge, because
1169 // if there are PMEM64 still here, 64-bit decode should be supported
1170 // by the root bride.
1181 Test whether bridge device support decode resource.
1183 @param Bridge Bridge device instance.
1184 @param Decode Decode type according to resource type.
1186 @return TRUE The bridge device support decode resource.
1187 @return FALSE The bridge device don't support decode resource.
1191 BridgeSupportResourceDecode (
1192 IN PCI_IO_DEVICE
*Bridge
,
1196 if (((Bridge
->Decodes
) & Decode
) != 0) {
1204 This function is used to program the resource allocated
1205 for each resource node under specified bridge.
1207 @param Base Base address of resource to be progammed.
1208 @param Bridge PCI resource node for the bridge device.
1210 @retval EFI_SUCCESS Successfully to program all resouces
1211 on given PCI bridge device.
1212 @retval EFI_OUT_OF_RESOURCES Base is all one.
1218 IN PCI_RESOURCE_NODE
*Bridge
1221 LIST_ENTRY
*CurrentLink
;
1222 PCI_RESOURCE_NODE
*Node
;
1225 if (Base
== gAllOne
) {
1226 return EFI_OUT_OF_RESOURCES
;
1229 CurrentLink
= Bridge
->ChildList
.ForwardLink
;
1231 while (CurrentLink
!= &Bridge
->ChildList
) {
1233 Node
= RESOURCE_NODE_FROM_LINK (CurrentLink
);
1235 if (!IS_PCI_BRIDGE (&(Node
->PciDev
->Pci
))) {
1237 if (IS_CARDBUS_BRIDGE (&(Node
->PciDev
->Pci
))) {
1239 // Program the PCI Card Bus device
1241 ProgramP2C (Base
, Node
);
1244 // Program the PCI device BAR
1246 ProgramBar (Base
, Node
);
1250 // Program the PCI devices under this bridge
1252 Status
= ProgramResource (Base
+ Node
->Offset
, Node
);
1253 if (EFI_ERROR (Status
)) {
1257 ProgramPpbApperture (Base
, Node
);
1260 CurrentLink
= CurrentLink
->ForwardLink
;
1267 Program Bar register for PCI device.
1269 @param Base Base address for PCI device resource to be progammed.
1270 @param Node Point to resoure node structure.
1276 IN PCI_RESOURCE_NODE
*Node
1279 EFI_PCI_IO_PROTOCOL
*PciIo
;
1283 ASSERT (Node
->Bar
< PCI_MAX_BAR
);
1288 if (Node
->Virtual
) {
1289 ProgramVfBar (Base
, Node
);
1293 PciIo
= &(Node
->PciDev
->PciIo
);
1295 Address
= Base
+ Node
->Offset
;
1298 // Indicate pci bus driver has allocated
1299 // resource for this device
1300 // It might be a temporary solution here since
1301 // pci device could have multiple bar
1303 Node
->PciDev
->Allocated
= TRUE
;
1305 switch ((Node
->PciDev
->PciBar
[Node
->Bar
]).BarType
) {
1307 case PciBarTypeIo16
:
1308 case PciBarTypeIo32
:
1309 case PciBarTypeMem32
:
1310 case PciBarTypePMem32
:
1314 EfiPciIoWidthUint32
,
1315 (Node
->PciDev
->PciBar
[Node
->Bar
]).Offset
,
1320 Node
->PciDev
->PciBar
[Node
->Bar
].BaseAddress
= Address
;
1324 case PciBarTypeMem64
:
1325 case PciBarTypePMem64
:
1327 Address32
= (UINT32
) (Address
& 0x00000000FFFFFFFF);
1331 EfiPciIoWidthUint32
,
1332 (Node
->PciDev
->PciBar
[Node
->Bar
]).Offset
,
1337 Address32
= (UINT32
) RShiftU64 (Address
, 32);
1341 EfiPciIoWidthUint32
,
1342 (UINT8
) ((Node
->PciDev
->PciBar
[Node
->Bar
]).Offset
+ 4),
1347 Node
->PciDev
->PciBar
[Node
->Bar
].BaseAddress
= Address
;
1357 Program IOV VF Bar register for PCI device.
1359 @param Base Base address for PCI device resource to be progammed.
1360 @param Node Point to resoure node structure.
1366 IN PCI_RESOURCE_NODE
*Node
1369 EFI_PCI_IO_PROTOCOL
*PciIo
;
1373 ASSERT (Node
->Bar
< PCI_MAX_BAR
);
1374 ASSERT (Node
->Virtual
);
1377 PciIo
= &(Node
->PciDev
->PciIo
);
1379 Address
= Base
+ Node
->Offset
;
1382 // Indicate pci bus driver has allocated
1383 // resource for this device
1384 // It might be a temporary solution here since
1385 // pci device could have multiple bar
1387 Node
->PciDev
->Allocated
= TRUE
;
1389 switch ((Node
->PciDev
->VfPciBar
[Node
->Bar
]).BarType
) {
1391 case PciBarTypeMem32
:
1392 case PciBarTypePMem32
:
1396 EfiPciIoWidthUint32
,
1397 (Node
->PciDev
->VfPciBar
[Node
->Bar
]).Offset
,
1402 Node
->PciDev
->VfPciBar
[Node
->Bar
].BaseAddress
= Address
;
1406 "PCI-IOV B%x.D%x.F%x - VF Bar (Offset - 0x%x) 32Mem (Address - 0x%x)\n",
1407 (UINTN
)Node
->PciDev
->BusNumber
,
1408 (UINTN
)Node
->PciDev
->DeviceNumber
,
1409 (UINTN
)Node
->PciDev
->FunctionNumber
,
1410 (UINTN
)(Node
->PciDev
->VfPciBar
[Node
->Bar
]).Offset
,
1416 case PciBarTypeMem64
:
1417 case PciBarTypePMem64
:
1419 Address32
= (UINT32
) (Address
& 0x00000000FFFFFFFF);
1423 EfiPciIoWidthUint32
,
1424 (Node
->PciDev
->VfPciBar
[Node
->Bar
]).Offset
,
1429 Address32
= (UINT32
) RShiftU64 (Address
, 32);
1433 EfiPciIoWidthUint32
,
1434 ((Node
->PciDev
->VfPciBar
[Node
->Bar
]).Offset
+ 4),
1439 Node
->PciDev
->VfPciBar
[Node
->Bar
].BaseAddress
= Address
;
1443 "PCI-IOV B%x.D%x.F%x - VF Bar (Offset - 0x%x) 64Mem (Address - 0x%lx)\n",
1444 (UINTN
)Node
->PciDev
->BusNumber
,
1445 (UINTN
)Node
->PciDev
->DeviceNumber
,
1446 (UINTN
)Node
->PciDev
->FunctionNumber
,
1447 (UINTN
)(Node
->PciDev
->VfPciBar
[Node
->Bar
]).Offset
,
1453 case PciBarTypeIo16
:
1454 case PciBarTypeIo32
:
1465 Program PCI-PCI bridge apperture.
1467 @param Base Base address for resource.
1468 @param Node Point to resoure node structure.
1472 ProgramPpbApperture (
1474 IN PCI_RESOURCE_NODE
*Node
1477 EFI_PCI_IO_PROTOCOL
*PciIo
;
1483 // If no device resource of this PPB, return anyway
1484 // Apperture is set default in the initialization code
1486 if (Node
->Length
== 0 || Node
->ResourceUsage
== PciResUsagePadding
) {
1488 // For padding resource node, just ignore when programming
1493 PciIo
= &(Node
->PciDev
->PciIo
);
1494 Address
= Base
+ Node
->Offset
;
1497 // Indicate the PPB resource has been allocated
1499 Node
->PciDev
->Allocated
= TRUE
;
1501 switch (Node
->Bar
) {
1507 EfiPciIoWidthUint32
,
1508 (Node
->PciDev
->PciBar
[Node
->Bar
]).Offset
,
1513 Node
->PciDev
->PciBar
[Node
->Bar
].BaseAddress
= Address
;
1514 Node
->PciDev
->PciBar
[Node
->Bar
].Length
= Node
->Length
;
1520 Address32
= ((UINT32
) (Address
)) >> 8;
1532 EfiPciIoWidthUint16
,
1538 Address32
= (UINT32
) (Address
+ Node
->Length
- 1);
1539 Address32
= ((UINT32
) (Address32
)) >> 8;
1551 EfiPciIoWidthUint16
,
1557 Node
->PciDev
->PciBar
[Node
->Bar
].BaseAddress
= Address
;
1558 Node
->PciDev
->PciBar
[Node
->Bar
].Length
= Node
->Length
;
1561 case PPB_MEM32_RANGE
:
1563 Address32
= ((UINT32
) (Address
)) >> 16;
1566 EfiPciIoWidthUint16
,
1572 Address32
= (UINT32
) (Address
+ Node
->Length
- 1);
1573 Address32
= ((UINT32
) (Address32
)) >> 16;
1576 EfiPciIoWidthUint16
,
1582 Node
->PciDev
->PciBar
[Node
->Bar
].BaseAddress
= Address
;
1583 Node
->PciDev
->PciBar
[Node
->Bar
].Length
= Node
->Length
;
1586 case PPB_PMEM32_RANGE
:
1587 case PPB_PMEM64_RANGE
:
1589 Address32
= ((UINT32
) (Address
)) >> 16;
1592 EfiPciIoWidthUint16
,
1598 Address32
= (UINT32
) (Address
+ Node
->Length
- 1);
1599 Address32
= ((UINT32
) (Address32
)) >> 16;
1602 EfiPciIoWidthUint16
,
1608 Address32
= (UINT32
) RShiftU64 (Address
, 32);
1611 EfiPciIoWidthUint32
,
1617 Address32
= (UINT32
) RShiftU64 ((Address
+ Node
->Length
- 1), 32);
1620 EfiPciIoWidthUint32
,
1626 Node
->PciDev
->PciBar
[Node
->Bar
].BaseAddress
= Address
;
1627 Node
->PciDev
->PciBar
[Node
->Bar
].Length
= Node
->Length
;
1636 Program parent bridge for Option Rom.
1638 @param PciDevice Pci deivce instance.
1639 @param OptionRomBase Base address for Optiona Rom.
1640 @param Enable Enable or disable PCI memory.
1644 ProgrameUpstreamBridgeForRom (
1645 IN PCI_IO_DEVICE
*PciDevice
,
1646 IN UINT32 OptionRomBase
,
1650 PCI_IO_DEVICE
*Parent
;
1651 PCI_RESOURCE_NODE Node
;
1653 // For root bridge, just return.
1655 Parent
= PciDevice
->Parent
;
1656 ZeroMem (&Node
, sizeof (Node
));
1657 while (Parent
!= NULL
) {
1658 if (!IS_PCI_BRIDGE (&Parent
->Pci
)) {
1662 Node
.PciDev
= Parent
;
1663 Node
.Length
= PciDevice
->RomSize
;
1665 Node
.Bar
= PPB_MEM32_RANGE
;
1666 Node
.ResType
= PciBarTypeMem32
;
1670 // Program PPB to only open a single <= 16MB apperture
1673 ProgramPpbApperture (OptionRomBase
, &Node
);
1674 PCI_ENABLE_COMMAND_REGISTER (Parent
, EFI_PCI_COMMAND_MEMORY_SPACE
);
1676 InitializePpb (Parent
);
1677 PCI_DISABLE_COMMAND_REGISTER (Parent
, EFI_PCI_COMMAND_MEMORY_SPACE
);
1680 Parent
= Parent
->Parent
;
1685 Test whether resource exists for a bridge.
1687 @param Bridge Point to resource node for a bridge.
1689 @retval TRUE There is resource on the given bridge.
1690 @retval FALSE There isn't resource on the given bridge.
1694 ResourceRequestExisted (
1695 IN PCI_RESOURCE_NODE
*Bridge
1698 if (Bridge
!= NULL
) {
1699 if (!IsListEmpty (&Bridge
->ChildList
) || Bridge
->Length
!= 0) {
1708 Initialize resource pool structure.
1710 @param ResourcePool Point to resource pool structure. This pool
1711 is reset to all zero when returned.
1712 @param ResourceType Type of resource.
1716 InitializeResourcePool (
1717 IN OUT PCI_RESOURCE_NODE
*ResourcePool
,
1718 IN PCI_BAR_TYPE ResourceType
1721 ZeroMem (ResourcePool
, sizeof (PCI_RESOURCE_NODE
));
1722 ResourcePool
->ResType
= ResourceType
;
1723 ResourcePool
->Signature
= PCI_RESOURCE_SIGNATURE
;
1724 InitializeListHead (&ResourcePool
->ChildList
);
1729 Get all resource information for given Pci device.
1731 @param PciDev Pci device instance.
1732 @param IoBridge Io resource node.
1733 @param Mem32Bridge 32-bit memory node.
1734 @param PMem32Bridge 32-bit Pmemory node.
1735 @param Mem64Bridge 64-bit memory node.
1736 @param PMem64Bridge 64-bit PMemory node.
1737 @param IoPool Link list header for Io resource.
1738 @param Mem32Pool Link list header for 32-bit memory.
1739 @param PMem32Pool Link list header for 32-bit Prefetchable memory.
1740 @param Mem64Pool Link list header for 64-bit memory.
1741 @param PMem64Pool Link list header for 64-bit Prefetchable memory.
1746 IN PCI_IO_DEVICE
*PciDev
,
1747 IN PCI_RESOURCE_NODE
**IoBridge
,
1748 IN PCI_RESOURCE_NODE
**Mem32Bridge
,
1749 IN PCI_RESOURCE_NODE
**PMem32Bridge
,
1750 IN PCI_RESOURCE_NODE
**Mem64Bridge
,
1751 IN PCI_RESOURCE_NODE
**PMem64Bridge
,
1752 IN PCI_RESOURCE_NODE
*IoPool
,
1753 IN PCI_RESOURCE_NODE
*Mem32Pool
,
1754 IN PCI_RESOURCE_NODE
*PMem32Pool
,
1755 IN PCI_RESOURCE_NODE
*Mem64Pool
,
1756 IN PCI_RESOURCE_NODE
*PMem64Pool
1760 PCI_RESOURCE_NODE
*Temp
;
1761 LIST_ENTRY
*CurrentLink
;
1763 CurrentLink
= IoPool
->ChildList
.ForwardLink
;
1766 // Get Io resource map
1768 while (CurrentLink
!= &IoPool
->ChildList
) {
1770 Temp
= RESOURCE_NODE_FROM_LINK (CurrentLink
);
1772 if (Temp
->PciDev
== PciDev
) {
1776 CurrentLink
= CurrentLink
->ForwardLink
;
1780 // Get Mem32 resource map
1782 CurrentLink
= Mem32Pool
->ChildList
.ForwardLink
;
1784 while (CurrentLink
!= &Mem32Pool
->ChildList
) {
1786 Temp
= RESOURCE_NODE_FROM_LINK (CurrentLink
);
1788 if (Temp
->PciDev
== PciDev
) {
1789 *Mem32Bridge
= Temp
;
1792 CurrentLink
= CurrentLink
->ForwardLink
;
1796 // Get Pmem32 resource map
1798 CurrentLink
= PMem32Pool
->ChildList
.ForwardLink
;
1800 while (CurrentLink
!= &PMem32Pool
->ChildList
) {
1802 Temp
= RESOURCE_NODE_FROM_LINK (CurrentLink
);
1804 if (Temp
->PciDev
== PciDev
) {
1805 *PMem32Bridge
= Temp
;
1808 CurrentLink
= CurrentLink
->ForwardLink
;
1812 // Get Mem64 resource map
1814 CurrentLink
= Mem64Pool
->ChildList
.ForwardLink
;
1816 while (CurrentLink
!= &Mem64Pool
->ChildList
) {
1818 Temp
= RESOURCE_NODE_FROM_LINK (CurrentLink
);
1820 if (Temp
->PciDev
== PciDev
) {
1821 *Mem64Bridge
= Temp
;
1824 CurrentLink
= CurrentLink
->ForwardLink
;
1828 // Get Pmem64 resource map
1830 CurrentLink
= PMem64Pool
->ChildList
.ForwardLink
;
1832 while (CurrentLink
!= &PMem64Pool
->ChildList
) {
1834 Temp
= RESOURCE_NODE_FROM_LINK (CurrentLink
);
1836 if (Temp
->PciDev
== PciDev
) {
1837 *PMem64Bridge
= Temp
;
1840 CurrentLink
= CurrentLink
->ForwardLink
;
1845 Destory given resource tree.
1847 @param Bridge PCI resource root node of resource tree.
1851 DestroyResourceTree (
1852 IN PCI_RESOURCE_NODE
*Bridge
1855 PCI_RESOURCE_NODE
*Temp
;
1856 LIST_ENTRY
*CurrentLink
;
1858 while (!IsListEmpty (&Bridge
->ChildList
)) {
1860 CurrentLink
= Bridge
->ChildList
.ForwardLink
;
1862 Temp
= RESOURCE_NODE_FROM_LINK (CurrentLink
);
1865 RemoveEntryList (CurrentLink
);
1867 if (IS_PCI_BRIDGE (&(Temp
->PciDev
->Pci
))) {
1868 DestroyResourceTree (Temp
);
1876 Insert resource padding for P2C.
1878 @param PciDev Pci device instance.
1879 @param IoNode Resource info node for IO.
1880 @param Mem32Node Resource info node for 32-bit memory.
1881 @param PMem32Node Resource info node for 32-bit Prefetchable Memory.
1882 @param Mem64Node Resource info node for 64-bit memory.
1883 @param PMem64Node Resource info node for 64-bit Prefetchable Memory.
1887 ResourcePaddingForCardBusBridge (
1888 IN PCI_IO_DEVICE
*PciDev
,
1889 IN PCI_RESOURCE_NODE
*IoNode
,
1890 IN PCI_RESOURCE_NODE
*Mem32Node
,
1891 IN PCI_RESOURCE_NODE
*PMem32Node
,
1892 IN PCI_RESOURCE_NODE
*Mem64Node
,
1893 IN PCI_RESOURCE_NODE
*PMem64Node
1896 PCI_RESOURCE_NODE
*Node
;
1901 // Memory Base/Limit Register 0
1902 // Bar 1 denodes memory range 0
1904 Node
= CreateResourceNode (
1913 InsertResourceNode (
1919 // Memory Base/Limit Register 1
1920 // Bar 2 denodes memory range1
1922 Node
= CreateResourceNode (
1931 InsertResourceNode (
1938 // Bar 3 denodes io range 0
1940 Node
= CreateResourceNode (
1949 InsertResourceNode (
1956 // Bar 4 denodes io range 0
1958 Node
= CreateResourceNode (
1967 InsertResourceNode (
1974 Program PCI Card device register for given resource node.
1976 @param Base Base address of PCI Card device to be programmed.
1977 @param Node Given resource node.
1983 IN PCI_RESOURCE_NODE
*Node
1986 EFI_PCI_IO_PROTOCOL
*PciIo
;
1989 UINT16 BridgeControl
;
1992 PciIo
= &(Node
->PciDev
->PciIo
);
1994 Address
= Base
+ Node
->Offset
;
1997 // Indicate pci bus driver has allocated
1998 // resource for this device
1999 // It might be a temporary solution here since
2000 // pci device could have multiple bar
2002 Node
->PciDev
->Allocated
= TRUE
;
2004 switch (Node
->Bar
) {
2009 EfiPciIoWidthUint32
,
2010 (Node
->PciDev
->PciBar
[Node
->Bar
]).Offset
,
2015 Node
->PciDev
->PciBar
[Node
->Bar
].BaseAddress
= Address
;
2016 Node
->PciDev
->PciBar
[Node
->Bar
].Length
= Node
->Length
;
2022 EfiPciIoWidthUint32
,
2023 PCI_CARD_MEMORY_BASE_0
,
2028 TempAddress
= Address
+ Node
->Length
- 1;
2031 EfiPciIoWidthUint32
,
2032 PCI_CARD_MEMORY_LIMIT_0
,
2037 if (Node
->ResType
== PciBarTypeMem32
) {
2039 // Set non-prefetchable bit
2043 EfiPciIoWidthUint16
,
2044 PCI_CARD_BRIDGE_CONTROL
,
2049 BridgeControl
&= (UINT16
) ~PCI_CARD_PREFETCHABLE_MEMORY_0_ENABLE
;
2052 EfiPciIoWidthUint16
,
2053 PCI_CARD_BRIDGE_CONTROL
,
2060 // Set pre-fetchable bit
2064 EfiPciIoWidthUint16
,
2065 PCI_CARD_BRIDGE_CONTROL
,
2070 BridgeControl
|= PCI_CARD_PREFETCHABLE_MEMORY_0_ENABLE
;
2073 EfiPciIoWidthUint16
,
2074 PCI_CARD_BRIDGE_CONTROL
,
2080 Node
->PciDev
->PciBar
[Node
->Bar
].BaseAddress
= Address
;
2081 Node
->PciDev
->PciBar
[Node
->Bar
].Length
= Node
->Length
;
2082 Node
->PciDev
->PciBar
[Node
->Bar
].BarType
= Node
->ResType
;
2089 EfiPciIoWidthUint32
,
2090 PCI_CARD_MEMORY_BASE_1
,
2095 TempAddress
= Address
+ Node
->Length
- 1;
2099 EfiPciIoWidthUint32
,
2100 PCI_CARD_MEMORY_LIMIT_1
,
2105 if (Node
->ResType
== PciBarTypeMem32
) {
2108 // Set non-prefetchable bit
2112 EfiPciIoWidthUint16
,
2113 PCI_CARD_BRIDGE_CONTROL
,
2118 BridgeControl
&= (UINT16
) ~(PCI_CARD_PREFETCHABLE_MEMORY_1_ENABLE
);
2121 EfiPciIoWidthUint16
,
2122 PCI_CARD_BRIDGE_CONTROL
,
2130 // Set pre-fetchable bit
2134 EfiPciIoWidthUint16
,
2135 PCI_CARD_BRIDGE_CONTROL
,
2140 BridgeControl
|= PCI_CARD_PREFETCHABLE_MEMORY_1_ENABLE
;
2143 EfiPciIoWidthUint16
,
2144 PCI_CARD_BRIDGE_CONTROL
,
2150 Node
->PciDev
->PciBar
[Node
->Bar
].BaseAddress
= Address
;
2151 Node
->PciDev
->PciBar
[Node
->Bar
].Length
= Node
->Length
;
2152 Node
->PciDev
->PciBar
[Node
->Bar
].BarType
= Node
->ResType
;
2158 EfiPciIoWidthUint32
,
2159 PCI_CARD_IO_BASE_0_LOWER
,
2164 TempAddress
= Address
+ Node
->Length
- 1;
2167 EfiPciIoWidthUint32
,
2168 PCI_CARD_IO_LIMIT_0_LOWER
,
2173 Node
->PciDev
->PciBar
[Node
->Bar
].BaseAddress
= Address
;
2174 Node
->PciDev
->PciBar
[Node
->Bar
].Length
= Node
->Length
;
2175 Node
->PciDev
->PciBar
[Node
->Bar
].BarType
= Node
->ResType
;
2182 EfiPciIoWidthUint32
,
2183 PCI_CARD_IO_BASE_1_LOWER
,
2188 TempAddress
= Address
+ Node
->Length
- 1;
2191 EfiPciIoWidthUint32
,
2192 PCI_CARD_IO_LIMIT_1_LOWER
,
2197 Node
->PciDev
->PciBar
[Node
->Bar
].BaseAddress
= Address
;
2198 Node
->PciDev
->PciBar
[Node
->Bar
].Length
= Node
->Length
;
2199 Node
->PciDev
->PciBar
[Node
->Bar
].BarType
= Node
->ResType
;
2208 Create padding resource node.
2210 @param PciDev Pci device instance.
2211 @param IoNode Resource info node for IO.
2212 @param Mem32Node Resource info node for 32-bit memory.
2213 @param PMem32Node Resource info node for 32-bit Prefetchable Memory.
2214 @param Mem64Node Resource info node for 64-bit memory.
2215 @param PMem64Node Resource info node for 64-bit Prefetchable Memory.
2219 ApplyResourcePadding (
2220 IN PCI_IO_DEVICE
*PciDev
,
2221 IN PCI_RESOURCE_NODE
*IoNode
,
2222 IN PCI_RESOURCE_NODE
*Mem32Node
,
2223 IN PCI_RESOURCE_NODE
*PMem32Node
,
2224 IN PCI_RESOURCE_NODE
*Mem64Node
,
2225 IN PCI_RESOURCE_NODE
*PMem64Node
2228 EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR
*Ptr
;
2229 PCI_RESOURCE_NODE
*Node
;
2230 UINT8 DummyBarIndex
;
2233 Ptr
= PciDev
->ResourcePaddingDescriptors
;
2235 while (((EFI_ACPI_END_TAG_DESCRIPTOR
*) Ptr
)->Desc
!= ACPI_END_TAG_DESCRIPTOR
) {
2237 if (Ptr
->Desc
== ACPI_ADDRESS_SPACE_DESCRIPTOR
&& Ptr
->ResType
== ACPI_ADDRESS_SPACE_TYPE_IO
) {
2238 if (Ptr
->AddrLen
!= 0) {
2240 Node
= CreateResourceNode (
2248 InsertResourceNode (
2258 if (Ptr
->Desc
== ACPI_ADDRESS_SPACE_DESCRIPTOR
&& Ptr
->ResType
== ACPI_ADDRESS_SPACE_TYPE_MEM
) {
2260 if (Ptr
->AddrSpaceGranularity
== 32) {
2265 if (Ptr
->SpecificFlag
== 0x6) {
2266 if (Ptr
->AddrLen
!= 0) {
2267 Node
= CreateResourceNode (
2275 InsertResourceNode (
2288 if (Ptr
->SpecificFlag
== 0) {
2289 if (Ptr
->AddrLen
!= 0) {
2290 Node
= CreateResourceNode (
2298 InsertResourceNode (
2309 if (Ptr
->AddrSpaceGranularity
== 64) {
2314 if (Ptr
->SpecificFlag
== 0x6) {
2315 if (Ptr
->AddrLen
!= 0) {
2316 Node
= CreateResourceNode (
2324 InsertResourceNode (
2337 if (Ptr
->SpecificFlag
== 0) {
2338 if (Ptr
->AddrLen
!= 0) {
2339 Node
= CreateResourceNode (
2347 InsertResourceNode (
2364 Get padding resource for PCI-PCI bridge.
2366 @param PciIoDevice PCI-PCI bridge device instance.
2368 @note Feature flag PcdPciBusHotplugDeviceSupport determines
2369 whether need to pad resource for them.
2372 GetResourcePaddingPpb (
2373 IN PCI_IO_DEVICE
*PciIoDevice
2376 if (gPciHotPlugInit
!= NULL
&& FeaturePcdGet (PcdPciBusHotplugDeviceSupport
)) {
2377 if (PciIoDevice
->ResourcePaddingDescriptors
== NULL
) {
2378 GetResourcePaddingForHpb (PciIoDevice
);