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
*ChildDeviceLink
;
1052 LIST_ENTRY
*ChildNodeLink
;
1053 PCI_RESOURCE_NODE
*TempNode
;
1056 // If any child device has both option ROM and 64-bit BAR, degrade its PMEM64/MEM64
1057 // requests in case that if a legacy option ROM image can not access 64-bit resources.
1059 ChildDeviceLink
= Bridge
->ChildList
.ForwardLink
;
1060 while (ChildDeviceLink
!= NULL
&& ChildDeviceLink
!= &Bridge
->ChildList
) {
1061 Temp
= PCI_IO_DEVICE_FROM_LINK (ChildDeviceLink
);
1062 if (Temp
->RomSize
!= 0) {
1063 if (!IsListEmpty (&Mem64Node
->ChildList
)) {
1064 ChildNodeLink
= Mem64Node
->ChildList
.ForwardLink
;
1065 while (ChildNodeLink
!= &Mem64Node
->ChildList
) {
1066 TempNode
= RESOURCE_NODE_FROM_LINK (ChildNodeLink
);
1068 if (TempNode
->PciDev
== Temp
) {
1069 RemoveEntryList (ChildNodeLink
);
1070 InsertResourceNode (Mem32Node
, TempNode
);
1072 ChildNodeLink
= TempNode
->Link
.ForwardLink
;
1076 if (!IsListEmpty (&PMem64Node
->ChildList
)) {
1077 ChildNodeLink
= PMem64Node
->ChildList
.ForwardLink
;
1078 while (ChildNodeLink
!= &PMem64Node
->ChildList
) {
1079 TempNode
= RESOURCE_NODE_FROM_LINK (ChildNodeLink
);
1081 if (TempNode
->PciDev
== Temp
) {
1082 RemoveEntryList (ChildNodeLink
);
1083 InsertResourceNode (PMem32Node
, TempNode
);
1085 ChildNodeLink
= TempNode
->Link
.ForwardLink
;
1090 ChildDeviceLink
= ChildDeviceLink
->ForwardLink
;
1094 // If firmware is in 32-bit mode,
1095 // then degrade PMEM64/MEM64 requests
1097 if (sizeof (UINTN
) <= 4) {
1111 // if the bridge does not support MEM64, degrade MEM64 to MEM32
1113 if (!BridgeSupportResourceDecode (Bridge
, EFI_BRIDGE_MEM64_DECODE_SUPPORTED
)) {
1122 // if the bridge does not support PMEM64, degrade PMEM64 to PMEM32
1124 if (!BridgeSupportResourceDecode (Bridge
, EFI_BRIDGE_PMEM64_DECODE_SUPPORTED
)) {
1133 // if both PMEM64 and PMEM32 requests from child devices, which can not be satisfied
1134 // by a P2P bridge simultaneously, keep PMEM64 and degrade PMEM32 to MEM32.
1136 if (!IsListEmpty (&PMem64Node
->ChildList
) && Bridge
->Parent
!= NULL
) {
1146 // If bridge doesn't support Pmem32
1147 // degrade it to mem32
1149 if (!BridgeSupportResourceDecode (Bridge
, EFI_BRIDGE_PMEM32_DECODE_SUPPORTED
)) {
1158 // if root bridge supports combined Pmem Mem decoding
1159 // merge these two type of resource
1161 if (BridgeSupportResourceDecode (Bridge
, EFI_BRIDGE_PMEM_MEM_COMBINE_SUPPORTED
)) {
1169 // No need to check if to degrade MEM64 after merge, because
1170 // if there are PMEM64 still here, 64-bit decode should be supported
1171 // by the root bride.
1182 Test whether bridge device support decode resource.
1184 @param Bridge Bridge device instance.
1185 @param Decode Decode type according to resource type.
1187 @return TRUE The bridge device support decode resource.
1188 @return FALSE The bridge device don't support decode resource.
1192 BridgeSupportResourceDecode (
1193 IN PCI_IO_DEVICE
*Bridge
,
1197 if (((Bridge
->Decodes
) & Decode
) != 0) {
1205 This function is used to program the resource allocated
1206 for each resource node under specified bridge.
1208 @param Base Base address of resource to be progammed.
1209 @param Bridge PCI resource node for the bridge device.
1211 @retval EFI_SUCCESS Successfully to program all resouces
1212 on given PCI bridge device.
1213 @retval EFI_OUT_OF_RESOURCES Base is all one.
1219 IN PCI_RESOURCE_NODE
*Bridge
1222 LIST_ENTRY
*CurrentLink
;
1223 PCI_RESOURCE_NODE
*Node
;
1226 if (Base
== gAllOne
) {
1227 return EFI_OUT_OF_RESOURCES
;
1230 CurrentLink
= Bridge
->ChildList
.ForwardLink
;
1232 while (CurrentLink
!= &Bridge
->ChildList
) {
1234 Node
= RESOURCE_NODE_FROM_LINK (CurrentLink
);
1236 if (!IS_PCI_BRIDGE (&(Node
->PciDev
->Pci
))) {
1238 if (IS_CARDBUS_BRIDGE (&(Node
->PciDev
->Pci
))) {
1240 // Program the PCI Card Bus device
1242 ProgramP2C (Base
, Node
);
1245 // Program the PCI device BAR
1247 ProgramBar (Base
, Node
);
1251 // Program the PCI devices under this bridge
1253 Status
= ProgramResource (Base
+ Node
->Offset
, Node
);
1254 if (EFI_ERROR (Status
)) {
1258 ProgramPpbApperture (Base
, Node
);
1261 CurrentLink
= CurrentLink
->ForwardLink
;
1268 Program Bar register for PCI device.
1270 @param Base Base address for PCI device resource to be progammed.
1271 @param Node Point to resoure node structure.
1277 IN PCI_RESOURCE_NODE
*Node
1280 EFI_PCI_IO_PROTOCOL
*PciIo
;
1284 ASSERT (Node
->Bar
< PCI_MAX_BAR
);
1289 if (Node
->Virtual
) {
1290 ProgramVfBar (Base
, Node
);
1294 PciIo
= &(Node
->PciDev
->PciIo
);
1296 Address
= Base
+ Node
->Offset
;
1299 // Indicate pci bus driver has allocated
1300 // resource for this device
1301 // It might be a temporary solution here since
1302 // pci device could have multiple bar
1304 Node
->PciDev
->Allocated
= TRUE
;
1306 switch ((Node
->PciDev
->PciBar
[Node
->Bar
]).BarType
) {
1308 case PciBarTypeIo16
:
1309 case PciBarTypeIo32
:
1310 case PciBarTypeMem32
:
1311 case PciBarTypePMem32
:
1315 EfiPciIoWidthUint32
,
1316 (Node
->PciDev
->PciBar
[Node
->Bar
]).Offset
,
1321 Node
->PciDev
->PciBar
[Node
->Bar
].BaseAddress
= Address
;
1325 case PciBarTypeMem64
:
1326 case PciBarTypePMem64
:
1328 Address32
= (UINT32
) (Address
& 0x00000000FFFFFFFF);
1332 EfiPciIoWidthUint32
,
1333 (Node
->PciDev
->PciBar
[Node
->Bar
]).Offset
,
1338 Address32
= (UINT32
) RShiftU64 (Address
, 32);
1342 EfiPciIoWidthUint32
,
1343 (UINT8
) ((Node
->PciDev
->PciBar
[Node
->Bar
]).Offset
+ 4),
1348 Node
->PciDev
->PciBar
[Node
->Bar
].BaseAddress
= Address
;
1358 Program IOV VF Bar register for PCI device.
1360 @param Base Base address for PCI device resource to be progammed.
1361 @param Node Point to resoure node structure.
1367 IN PCI_RESOURCE_NODE
*Node
1370 EFI_PCI_IO_PROTOCOL
*PciIo
;
1374 ASSERT (Node
->Bar
< PCI_MAX_BAR
);
1375 ASSERT (Node
->Virtual
);
1378 PciIo
= &(Node
->PciDev
->PciIo
);
1380 Address
= Base
+ Node
->Offset
;
1383 // Indicate pci bus driver has allocated
1384 // resource for this device
1385 // It might be a temporary solution here since
1386 // pci device could have multiple bar
1388 Node
->PciDev
->Allocated
= TRUE
;
1390 switch ((Node
->PciDev
->VfPciBar
[Node
->Bar
]).BarType
) {
1392 case PciBarTypeMem32
:
1393 case PciBarTypePMem32
:
1397 EfiPciIoWidthUint32
,
1398 (Node
->PciDev
->VfPciBar
[Node
->Bar
]).Offset
,
1403 Node
->PciDev
->VfPciBar
[Node
->Bar
].BaseAddress
= Address
;
1407 "PCI-IOV B%x.D%x.F%x - VF Bar (Offset - 0x%x) 32Mem (Address - 0x%x)\n",
1408 (UINTN
)Node
->PciDev
->BusNumber
,
1409 (UINTN
)Node
->PciDev
->DeviceNumber
,
1410 (UINTN
)Node
->PciDev
->FunctionNumber
,
1411 (UINTN
)(Node
->PciDev
->VfPciBar
[Node
->Bar
]).Offset
,
1417 case PciBarTypeMem64
:
1418 case PciBarTypePMem64
:
1420 Address32
= (UINT32
) (Address
& 0x00000000FFFFFFFF);
1424 EfiPciIoWidthUint32
,
1425 (Node
->PciDev
->VfPciBar
[Node
->Bar
]).Offset
,
1430 Address32
= (UINT32
) RShiftU64 (Address
, 32);
1434 EfiPciIoWidthUint32
,
1435 ((Node
->PciDev
->VfPciBar
[Node
->Bar
]).Offset
+ 4),
1440 Node
->PciDev
->VfPciBar
[Node
->Bar
].BaseAddress
= Address
;
1444 "PCI-IOV B%x.D%x.F%x - VF Bar (Offset - 0x%x) 64Mem (Address - 0x%lx)\n",
1445 (UINTN
)Node
->PciDev
->BusNumber
,
1446 (UINTN
)Node
->PciDev
->DeviceNumber
,
1447 (UINTN
)Node
->PciDev
->FunctionNumber
,
1448 (UINTN
)(Node
->PciDev
->VfPciBar
[Node
->Bar
]).Offset
,
1454 case PciBarTypeIo16
:
1455 case PciBarTypeIo32
:
1466 Program PCI-PCI bridge apperture.
1468 @param Base Base address for resource.
1469 @param Node Point to resoure node structure.
1473 ProgramPpbApperture (
1475 IN PCI_RESOURCE_NODE
*Node
1478 EFI_PCI_IO_PROTOCOL
*PciIo
;
1484 // If no device resource of this PPB, return anyway
1485 // Apperture is set default in the initialization code
1487 if (Node
->Length
== 0 || Node
->ResourceUsage
== PciResUsagePadding
) {
1489 // For padding resource node, just ignore when programming
1494 PciIo
= &(Node
->PciDev
->PciIo
);
1495 Address
= Base
+ Node
->Offset
;
1498 // Indicate the PPB resource has been allocated
1500 Node
->PciDev
->Allocated
= TRUE
;
1502 switch (Node
->Bar
) {
1508 EfiPciIoWidthUint32
,
1509 (Node
->PciDev
->PciBar
[Node
->Bar
]).Offset
,
1514 Node
->PciDev
->PciBar
[Node
->Bar
].BaseAddress
= Address
;
1515 Node
->PciDev
->PciBar
[Node
->Bar
].Length
= Node
->Length
;
1521 Address32
= ((UINT32
) (Address
)) >> 8;
1533 EfiPciIoWidthUint16
,
1539 Address32
= (UINT32
) (Address
+ Node
->Length
- 1);
1540 Address32
= ((UINT32
) (Address32
)) >> 8;
1552 EfiPciIoWidthUint16
,
1558 Node
->PciDev
->PciBar
[Node
->Bar
].BaseAddress
= Address
;
1559 Node
->PciDev
->PciBar
[Node
->Bar
].Length
= Node
->Length
;
1562 case PPB_MEM32_RANGE
:
1564 Address32
= ((UINT32
) (Address
)) >> 16;
1567 EfiPciIoWidthUint16
,
1573 Address32
= (UINT32
) (Address
+ Node
->Length
- 1);
1574 Address32
= ((UINT32
) (Address32
)) >> 16;
1577 EfiPciIoWidthUint16
,
1583 Node
->PciDev
->PciBar
[Node
->Bar
].BaseAddress
= Address
;
1584 Node
->PciDev
->PciBar
[Node
->Bar
].Length
= Node
->Length
;
1587 case PPB_PMEM32_RANGE
:
1588 case PPB_PMEM64_RANGE
:
1590 Address32
= ((UINT32
) (Address
)) >> 16;
1593 EfiPciIoWidthUint16
,
1599 Address32
= (UINT32
) (Address
+ Node
->Length
- 1);
1600 Address32
= ((UINT32
) (Address32
)) >> 16;
1603 EfiPciIoWidthUint16
,
1609 Address32
= (UINT32
) RShiftU64 (Address
, 32);
1612 EfiPciIoWidthUint32
,
1618 Address32
= (UINT32
) RShiftU64 ((Address
+ Node
->Length
- 1), 32);
1621 EfiPciIoWidthUint32
,
1627 Node
->PciDev
->PciBar
[Node
->Bar
].BaseAddress
= Address
;
1628 Node
->PciDev
->PciBar
[Node
->Bar
].Length
= Node
->Length
;
1637 Program parent bridge for Option Rom.
1639 @param PciDevice Pci deivce instance.
1640 @param OptionRomBase Base address for Optiona Rom.
1641 @param Enable Enable or disable PCI memory.
1645 ProgrameUpstreamBridgeForRom (
1646 IN PCI_IO_DEVICE
*PciDevice
,
1647 IN UINT32 OptionRomBase
,
1651 PCI_IO_DEVICE
*Parent
;
1652 PCI_RESOURCE_NODE Node
;
1654 // For root bridge, just return.
1656 Parent
= PciDevice
->Parent
;
1657 ZeroMem (&Node
, sizeof (Node
));
1658 while (Parent
!= NULL
) {
1659 if (!IS_PCI_BRIDGE (&Parent
->Pci
)) {
1663 Node
.PciDev
= Parent
;
1664 Node
.Length
= PciDevice
->RomSize
;
1666 Node
.Bar
= PPB_MEM32_RANGE
;
1667 Node
.ResType
= PciBarTypeMem32
;
1671 // Program PPB to only open a single <= 16MB apperture
1674 ProgramPpbApperture (OptionRomBase
, &Node
);
1675 PCI_ENABLE_COMMAND_REGISTER (Parent
, EFI_PCI_COMMAND_MEMORY_SPACE
);
1677 InitializePpb (Parent
);
1678 PCI_DISABLE_COMMAND_REGISTER (Parent
, EFI_PCI_COMMAND_MEMORY_SPACE
);
1681 Parent
= Parent
->Parent
;
1686 Test whether resource exists for a bridge.
1688 @param Bridge Point to resource node for a bridge.
1690 @retval TRUE There is resource on the given bridge.
1691 @retval FALSE There isn't resource on the given bridge.
1695 ResourceRequestExisted (
1696 IN PCI_RESOURCE_NODE
*Bridge
1699 if (Bridge
!= NULL
) {
1700 if (!IsListEmpty (&Bridge
->ChildList
) || Bridge
->Length
!= 0) {
1709 Initialize resource pool structure.
1711 @param ResourcePool Point to resource pool structure. This pool
1712 is reset to all zero when returned.
1713 @param ResourceType Type of resource.
1717 InitializeResourcePool (
1718 IN OUT PCI_RESOURCE_NODE
*ResourcePool
,
1719 IN PCI_BAR_TYPE ResourceType
1722 ZeroMem (ResourcePool
, sizeof (PCI_RESOURCE_NODE
));
1723 ResourcePool
->ResType
= ResourceType
;
1724 ResourcePool
->Signature
= PCI_RESOURCE_SIGNATURE
;
1725 InitializeListHead (&ResourcePool
->ChildList
);
1730 Get all resource information for given Pci device.
1732 @param PciDev Pci device instance.
1733 @param IoBridge Io resource node.
1734 @param Mem32Bridge 32-bit memory node.
1735 @param PMem32Bridge 32-bit Pmemory node.
1736 @param Mem64Bridge 64-bit memory node.
1737 @param PMem64Bridge 64-bit PMemory node.
1738 @param IoPool Link list header for Io resource.
1739 @param Mem32Pool Link list header for 32-bit memory.
1740 @param PMem32Pool Link list header for 32-bit Prefetchable memory.
1741 @param Mem64Pool Link list header for 64-bit memory.
1742 @param PMem64Pool Link list header for 64-bit Prefetchable memory.
1747 IN PCI_IO_DEVICE
*PciDev
,
1748 IN PCI_RESOURCE_NODE
**IoBridge
,
1749 IN PCI_RESOURCE_NODE
**Mem32Bridge
,
1750 IN PCI_RESOURCE_NODE
**PMem32Bridge
,
1751 IN PCI_RESOURCE_NODE
**Mem64Bridge
,
1752 IN PCI_RESOURCE_NODE
**PMem64Bridge
,
1753 IN PCI_RESOURCE_NODE
*IoPool
,
1754 IN PCI_RESOURCE_NODE
*Mem32Pool
,
1755 IN PCI_RESOURCE_NODE
*PMem32Pool
,
1756 IN PCI_RESOURCE_NODE
*Mem64Pool
,
1757 IN PCI_RESOURCE_NODE
*PMem64Pool
1761 PCI_RESOURCE_NODE
*Temp
;
1762 LIST_ENTRY
*CurrentLink
;
1764 CurrentLink
= IoPool
->ChildList
.ForwardLink
;
1767 // Get Io resource map
1769 while (CurrentLink
!= &IoPool
->ChildList
) {
1771 Temp
= RESOURCE_NODE_FROM_LINK (CurrentLink
);
1773 if (Temp
->PciDev
== PciDev
) {
1777 CurrentLink
= CurrentLink
->ForwardLink
;
1781 // Get Mem32 resource map
1783 CurrentLink
= Mem32Pool
->ChildList
.ForwardLink
;
1785 while (CurrentLink
!= &Mem32Pool
->ChildList
) {
1787 Temp
= RESOURCE_NODE_FROM_LINK (CurrentLink
);
1789 if (Temp
->PciDev
== PciDev
) {
1790 *Mem32Bridge
= Temp
;
1793 CurrentLink
= CurrentLink
->ForwardLink
;
1797 // Get Pmem32 resource map
1799 CurrentLink
= PMem32Pool
->ChildList
.ForwardLink
;
1801 while (CurrentLink
!= &PMem32Pool
->ChildList
) {
1803 Temp
= RESOURCE_NODE_FROM_LINK (CurrentLink
);
1805 if (Temp
->PciDev
== PciDev
) {
1806 *PMem32Bridge
= Temp
;
1809 CurrentLink
= CurrentLink
->ForwardLink
;
1813 // Get Mem64 resource map
1815 CurrentLink
= Mem64Pool
->ChildList
.ForwardLink
;
1817 while (CurrentLink
!= &Mem64Pool
->ChildList
) {
1819 Temp
= RESOURCE_NODE_FROM_LINK (CurrentLink
);
1821 if (Temp
->PciDev
== PciDev
) {
1822 *Mem64Bridge
= Temp
;
1825 CurrentLink
= CurrentLink
->ForwardLink
;
1829 // Get Pmem64 resource map
1831 CurrentLink
= PMem64Pool
->ChildList
.ForwardLink
;
1833 while (CurrentLink
!= &PMem64Pool
->ChildList
) {
1835 Temp
= RESOURCE_NODE_FROM_LINK (CurrentLink
);
1837 if (Temp
->PciDev
== PciDev
) {
1838 *PMem64Bridge
= Temp
;
1841 CurrentLink
= CurrentLink
->ForwardLink
;
1846 Destory given resource tree.
1848 @param Bridge PCI resource root node of resource tree.
1852 DestroyResourceTree (
1853 IN PCI_RESOURCE_NODE
*Bridge
1856 PCI_RESOURCE_NODE
*Temp
;
1857 LIST_ENTRY
*CurrentLink
;
1859 while (!IsListEmpty (&Bridge
->ChildList
)) {
1861 CurrentLink
= Bridge
->ChildList
.ForwardLink
;
1863 Temp
= RESOURCE_NODE_FROM_LINK (CurrentLink
);
1866 RemoveEntryList (CurrentLink
);
1868 if (IS_PCI_BRIDGE (&(Temp
->PciDev
->Pci
))) {
1869 DestroyResourceTree (Temp
);
1877 Insert resource padding for P2C.
1879 @param PciDev Pci device instance.
1880 @param IoNode Resource info node for IO.
1881 @param Mem32Node Resource info node for 32-bit memory.
1882 @param PMem32Node Resource info node for 32-bit Prefetchable Memory.
1883 @param Mem64Node Resource info node for 64-bit memory.
1884 @param PMem64Node Resource info node for 64-bit Prefetchable Memory.
1888 ResourcePaddingForCardBusBridge (
1889 IN PCI_IO_DEVICE
*PciDev
,
1890 IN PCI_RESOURCE_NODE
*IoNode
,
1891 IN PCI_RESOURCE_NODE
*Mem32Node
,
1892 IN PCI_RESOURCE_NODE
*PMem32Node
,
1893 IN PCI_RESOURCE_NODE
*Mem64Node
,
1894 IN PCI_RESOURCE_NODE
*PMem64Node
1897 PCI_RESOURCE_NODE
*Node
;
1902 // Memory Base/Limit Register 0
1903 // Bar 1 denodes memory range 0
1905 Node
= CreateResourceNode (
1914 InsertResourceNode (
1920 // Memory Base/Limit Register 1
1921 // Bar 2 denodes memory range1
1923 Node
= CreateResourceNode (
1932 InsertResourceNode (
1939 // Bar 3 denodes io range 0
1941 Node
= CreateResourceNode (
1950 InsertResourceNode (
1957 // Bar 4 denodes io range 0
1959 Node
= CreateResourceNode (
1968 InsertResourceNode (
1975 Program PCI Card device register for given resource node.
1977 @param Base Base address of PCI Card device to be programmed.
1978 @param Node Given resource node.
1984 IN PCI_RESOURCE_NODE
*Node
1987 EFI_PCI_IO_PROTOCOL
*PciIo
;
1990 UINT16 BridgeControl
;
1993 PciIo
= &(Node
->PciDev
->PciIo
);
1995 Address
= Base
+ Node
->Offset
;
1998 // Indicate pci bus driver has allocated
1999 // resource for this device
2000 // It might be a temporary solution here since
2001 // pci device could have multiple bar
2003 Node
->PciDev
->Allocated
= TRUE
;
2005 switch (Node
->Bar
) {
2010 EfiPciIoWidthUint32
,
2011 (Node
->PciDev
->PciBar
[Node
->Bar
]).Offset
,
2016 Node
->PciDev
->PciBar
[Node
->Bar
].BaseAddress
= Address
;
2017 Node
->PciDev
->PciBar
[Node
->Bar
].Length
= Node
->Length
;
2023 EfiPciIoWidthUint32
,
2024 PCI_CARD_MEMORY_BASE_0
,
2029 TempAddress
= Address
+ Node
->Length
- 1;
2032 EfiPciIoWidthUint32
,
2033 PCI_CARD_MEMORY_LIMIT_0
,
2038 if (Node
->ResType
== PciBarTypeMem32
) {
2040 // Set non-prefetchable bit
2044 EfiPciIoWidthUint16
,
2045 PCI_CARD_BRIDGE_CONTROL
,
2050 BridgeControl
&= (UINT16
) ~PCI_CARD_PREFETCHABLE_MEMORY_0_ENABLE
;
2053 EfiPciIoWidthUint16
,
2054 PCI_CARD_BRIDGE_CONTROL
,
2061 // Set pre-fetchable bit
2065 EfiPciIoWidthUint16
,
2066 PCI_CARD_BRIDGE_CONTROL
,
2071 BridgeControl
|= PCI_CARD_PREFETCHABLE_MEMORY_0_ENABLE
;
2074 EfiPciIoWidthUint16
,
2075 PCI_CARD_BRIDGE_CONTROL
,
2081 Node
->PciDev
->PciBar
[Node
->Bar
].BaseAddress
= Address
;
2082 Node
->PciDev
->PciBar
[Node
->Bar
].Length
= Node
->Length
;
2083 Node
->PciDev
->PciBar
[Node
->Bar
].BarType
= Node
->ResType
;
2090 EfiPciIoWidthUint32
,
2091 PCI_CARD_MEMORY_BASE_1
,
2096 TempAddress
= Address
+ Node
->Length
- 1;
2100 EfiPciIoWidthUint32
,
2101 PCI_CARD_MEMORY_LIMIT_1
,
2106 if (Node
->ResType
== PciBarTypeMem32
) {
2109 // Set non-prefetchable bit
2113 EfiPciIoWidthUint16
,
2114 PCI_CARD_BRIDGE_CONTROL
,
2119 BridgeControl
&= (UINT16
) ~(PCI_CARD_PREFETCHABLE_MEMORY_1_ENABLE
);
2122 EfiPciIoWidthUint16
,
2123 PCI_CARD_BRIDGE_CONTROL
,
2131 // Set pre-fetchable bit
2135 EfiPciIoWidthUint16
,
2136 PCI_CARD_BRIDGE_CONTROL
,
2141 BridgeControl
|= PCI_CARD_PREFETCHABLE_MEMORY_1_ENABLE
;
2144 EfiPciIoWidthUint16
,
2145 PCI_CARD_BRIDGE_CONTROL
,
2151 Node
->PciDev
->PciBar
[Node
->Bar
].BaseAddress
= Address
;
2152 Node
->PciDev
->PciBar
[Node
->Bar
].Length
= Node
->Length
;
2153 Node
->PciDev
->PciBar
[Node
->Bar
].BarType
= Node
->ResType
;
2159 EfiPciIoWidthUint32
,
2160 PCI_CARD_IO_BASE_0_LOWER
,
2165 TempAddress
= Address
+ Node
->Length
- 1;
2168 EfiPciIoWidthUint32
,
2169 PCI_CARD_IO_LIMIT_0_LOWER
,
2174 Node
->PciDev
->PciBar
[Node
->Bar
].BaseAddress
= Address
;
2175 Node
->PciDev
->PciBar
[Node
->Bar
].Length
= Node
->Length
;
2176 Node
->PciDev
->PciBar
[Node
->Bar
].BarType
= Node
->ResType
;
2183 EfiPciIoWidthUint32
,
2184 PCI_CARD_IO_BASE_1_LOWER
,
2189 TempAddress
= Address
+ Node
->Length
- 1;
2192 EfiPciIoWidthUint32
,
2193 PCI_CARD_IO_LIMIT_1_LOWER
,
2198 Node
->PciDev
->PciBar
[Node
->Bar
].BaseAddress
= Address
;
2199 Node
->PciDev
->PciBar
[Node
->Bar
].Length
= Node
->Length
;
2200 Node
->PciDev
->PciBar
[Node
->Bar
].BarType
= Node
->ResType
;
2209 Create padding resource node.
2211 @param PciDev Pci device instance.
2212 @param IoNode Resource info node for IO.
2213 @param Mem32Node Resource info node for 32-bit memory.
2214 @param PMem32Node Resource info node for 32-bit Prefetchable Memory.
2215 @param Mem64Node Resource info node for 64-bit memory.
2216 @param PMem64Node Resource info node for 64-bit Prefetchable Memory.
2220 ApplyResourcePadding (
2221 IN PCI_IO_DEVICE
*PciDev
,
2222 IN PCI_RESOURCE_NODE
*IoNode
,
2223 IN PCI_RESOURCE_NODE
*Mem32Node
,
2224 IN PCI_RESOURCE_NODE
*PMem32Node
,
2225 IN PCI_RESOURCE_NODE
*Mem64Node
,
2226 IN PCI_RESOURCE_NODE
*PMem64Node
2229 EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR
*Ptr
;
2230 PCI_RESOURCE_NODE
*Node
;
2231 UINT8 DummyBarIndex
;
2234 Ptr
= PciDev
->ResourcePaddingDescriptors
;
2236 while (((EFI_ACPI_END_TAG_DESCRIPTOR
*) Ptr
)->Desc
!= ACPI_END_TAG_DESCRIPTOR
) {
2238 if (Ptr
->Desc
== ACPI_ADDRESS_SPACE_DESCRIPTOR
&& Ptr
->ResType
== ACPI_ADDRESS_SPACE_TYPE_IO
) {
2239 if (Ptr
->AddrLen
!= 0) {
2241 Node
= CreateResourceNode (
2249 InsertResourceNode (
2259 if (Ptr
->Desc
== ACPI_ADDRESS_SPACE_DESCRIPTOR
&& Ptr
->ResType
== ACPI_ADDRESS_SPACE_TYPE_MEM
) {
2261 if (Ptr
->AddrSpaceGranularity
== 32) {
2266 if (Ptr
->SpecificFlag
== 0x6) {
2267 if (Ptr
->AddrLen
!= 0) {
2268 Node
= CreateResourceNode (
2276 InsertResourceNode (
2289 if (Ptr
->SpecificFlag
== 0) {
2290 if (Ptr
->AddrLen
!= 0) {
2291 Node
= CreateResourceNode (
2299 InsertResourceNode (
2310 if (Ptr
->AddrSpaceGranularity
== 64) {
2315 if (Ptr
->SpecificFlag
== 0x6) {
2316 if (Ptr
->AddrLen
!= 0) {
2317 Node
= CreateResourceNode (
2325 InsertResourceNode (
2338 if (Ptr
->SpecificFlag
== 0) {
2339 if (Ptr
->AddrLen
!= 0) {
2340 Node
= CreateResourceNode (
2348 InsertResourceNode (
2365 Get padding resource for PCI-PCI bridge.
2367 @param PciIoDevice PCI-PCI bridge device instance.
2369 @note Feature flag PcdPciBusHotplugDeviceSupport determines
2370 whether need to pad resource for them.
2373 GetResourcePaddingPpb (
2374 IN PCI_IO_DEVICE
*PciIoDevice
2377 if (gPciHotPlugInit
!= NULL
&& FeaturePcdGet (PcdPciBusHotplugDeviceSupport
)) {
2378 if (PciIoDevice
->ResourcePaddingDescriptors
== NULL
) {
2379 GetResourcePaddingForHpb (PciIoDevice
);