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 LIST_ENTRY
*NextChildNodeLink
;
1054 PCI_RESOURCE_NODE
*TempNode
;
1057 // If any child device has both option ROM and 64-bit BAR, degrade its PMEM64/MEM64
1058 // requests in case that if a legacy option ROM image can not access 64-bit resources.
1060 ChildDeviceLink
= Bridge
->ChildList
.ForwardLink
;
1061 while (ChildDeviceLink
!= NULL
&& ChildDeviceLink
!= &Bridge
->ChildList
) {
1062 Temp
= PCI_IO_DEVICE_FROM_LINK (ChildDeviceLink
);
1063 if (Temp
->RomSize
!= 0) {
1064 if (!IsListEmpty (&Mem64Node
->ChildList
)) {
1065 ChildNodeLink
= Mem64Node
->ChildList
.ForwardLink
;
1066 while (ChildNodeLink
!= &Mem64Node
->ChildList
) {
1067 TempNode
= RESOURCE_NODE_FROM_LINK (ChildNodeLink
);
1068 NextChildNodeLink
= ChildNodeLink
->ForwardLink
;
1070 if (TempNode
->PciDev
== Temp
) {
1071 RemoveEntryList (ChildNodeLink
);
1072 InsertResourceNode (Mem32Node
, TempNode
);
1074 ChildNodeLink
= NextChildNodeLink
;
1078 if (!IsListEmpty (&PMem64Node
->ChildList
)) {
1079 ChildNodeLink
= PMem64Node
->ChildList
.ForwardLink
;
1080 while (ChildNodeLink
!= &PMem64Node
->ChildList
) {
1081 TempNode
= RESOURCE_NODE_FROM_LINK (ChildNodeLink
);
1082 NextChildNodeLink
= ChildNodeLink
->ForwardLink
;
1084 if (TempNode
->PciDev
== Temp
) {
1085 RemoveEntryList (ChildNodeLink
);
1086 InsertResourceNode (PMem32Node
, TempNode
);
1088 ChildNodeLink
= NextChildNodeLink
;
1093 ChildDeviceLink
= ChildDeviceLink
->ForwardLink
;
1097 // If firmware is in 32-bit mode,
1098 // then degrade PMEM64/MEM64 requests
1100 if (sizeof (UINTN
) <= 4) {
1114 // if the bridge does not support MEM64, degrade MEM64 to MEM32
1116 if (!BridgeSupportResourceDecode (Bridge
, EFI_BRIDGE_MEM64_DECODE_SUPPORTED
)) {
1125 // if the bridge does not support PMEM64, degrade PMEM64 to PMEM32
1127 if (!BridgeSupportResourceDecode (Bridge
, EFI_BRIDGE_PMEM64_DECODE_SUPPORTED
)) {
1136 // if both PMEM64 and PMEM32 requests from child devices, which can not be satisfied
1137 // by a P2P bridge simultaneously, keep PMEM64 and degrade PMEM32 to MEM32.
1139 if (!IsListEmpty (&PMem64Node
->ChildList
) && Bridge
->Parent
!= NULL
) {
1149 // If bridge doesn't support Pmem32
1150 // degrade it to mem32
1152 if (!BridgeSupportResourceDecode (Bridge
, EFI_BRIDGE_PMEM32_DECODE_SUPPORTED
)) {
1161 // if root bridge supports combined Pmem Mem decoding
1162 // merge these two type of resource
1164 if (BridgeSupportResourceDecode (Bridge
, EFI_BRIDGE_PMEM_MEM_COMBINE_SUPPORTED
)) {
1172 // No need to check if to degrade MEM64 after merge, because
1173 // if there are PMEM64 still here, 64-bit decode should be supported
1174 // by the root bride.
1185 Test whether bridge device support decode resource.
1187 @param Bridge Bridge device instance.
1188 @param Decode Decode type according to resource type.
1190 @return TRUE The bridge device support decode resource.
1191 @return FALSE The bridge device don't support decode resource.
1195 BridgeSupportResourceDecode (
1196 IN PCI_IO_DEVICE
*Bridge
,
1200 if (((Bridge
->Decodes
) & Decode
) != 0) {
1208 This function is used to program the resource allocated
1209 for each resource node under specified bridge.
1211 @param Base Base address of resource to be progammed.
1212 @param Bridge PCI resource node for the bridge device.
1214 @retval EFI_SUCCESS Successfully to program all resouces
1215 on given PCI bridge device.
1216 @retval EFI_OUT_OF_RESOURCES Base is all one.
1222 IN PCI_RESOURCE_NODE
*Bridge
1225 LIST_ENTRY
*CurrentLink
;
1226 PCI_RESOURCE_NODE
*Node
;
1229 if (Base
== gAllOne
) {
1230 return EFI_OUT_OF_RESOURCES
;
1233 CurrentLink
= Bridge
->ChildList
.ForwardLink
;
1235 while (CurrentLink
!= &Bridge
->ChildList
) {
1237 Node
= RESOURCE_NODE_FROM_LINK (CurrentLink
);
1239 if (!IS_PCI_BRIDGE (&(Node
->PciDev
->Pci
))) {
1241 if (IS_CARDBUS_BRIDGE (&(Node
->PciDev
->Pci
))) {
1243 // Program the PCI Card Bus device
1245 ProgramP2C (Base
, Node
);
1248 // Program the PCI device BAR
1250 ProgramBar (Base
, Node
);
1254 // Program the PCI devices under this bridge
1256 Status
= ProgramResource (Base
+ Node
->Offset
, Node
);
1257 if (EFI_ERROR (Status
)) {
1261 ProgramPpbApperture (Base
, Node
);
1264 CurrentLink
= CurrentLink
->ForwardLink
;
1271 Program Bar register for PCI device.
1273 @param Base Base address for PCI device resource to be progammed.
1274 @param Node Point to resoure node structure.
1280 IN PCI_RESOURCE_NODE
*Node
1283 EFI_PCI_IO_PROTOCOL
*PciIo
;
1287 ASSERT (Node
->Bar
< PCI_MAX_BAR
);
1292 if (Node
->Virtual
) {
1293 ProgramVfBar (Base
, Node
);
1297 PciIo
= &(Node
->PciDev
->PciIo
);
1299 Address
= Base
+ Node
->Offset
;
1302 // Indicate pci bus driver has allocated
1303 // resource for this device
1304 // It might be a temporary solution here since
1305 // pci device could have multiple bar
1307 Node
->PciDev
->Allocated
= TRUE
;
1309 switch ((Node
->PciDev
->PciBar
[Node
->Bar
]).BarType
) {
1311 case PciBarTypeIo16
:
1312 case PciBarTypeIo32
:
1313 case PciBarTypeMem32
:
1314 case PciBarTypePMem32
:
1318 EfiPciIoWidthUint32
,
1319 (Node
->PciDev
->PciBar
[Node
->Bar
]).Offset
,
1324 Node
->PciDev
->PciBar
[Node
->Bar
].BaseAddress
= Address
;
1328 case PciBarTypeMem64
:
1329 case PciBarTypePMem64
:
1331 Address32
= (UINT32
) (Address
& 0x00000000FFFFFFFF);
1335 EfiPciIoWidthUint32
,
1336 (Node
->PciDev
->PciBar
[Node
->Bar
]).Offset
,
1341 Address32
= (UINT32
) RShiftU64 (Address
, 32);
1345 EfiPciIoWidthUint32
,
1346 (UINT8
) ((Node
->PciDev
->PciBar
[Node
->Bar
]).Offset
+ 4),
1351 Node
->PciDev
->PciBar
[Node
->Bar
].BaseAddress
= Address
;
1361 Program IOV VF Bar register for PCI device.
1363 @param Base Base address for PCI device resource to be progammed.
1364 @param Node Point to resoure node structure.
1370 IN PCI_RESOURCE_NODE
*Node
1373 EFI_PCI_IO_PROTOCOL
*PciIo
;
1377 ASSERT (Node
->Bar
< PCI_MAX_BAR
);
1378 ASSERT (Node
->Virtual
);
1381 PciIo
= &(Node
->PciDev
->PciIo
);
1383 Address
= Base
+ Node
->Offset
;
1386 // Indicate pci bus driver has allocated
1387 // resource for this device
1388 // It might be a temporary solution here since
1389 // pci device could have multiple bar
1391 Node
->PciDev
->Allocated
= TRUE
;
1393 switch ((Node
->PciDev
->VfPciBar
[Node
->Bar
]).BarType
) {
1395 case PciBarTypeMem32
:
1396 case PciBarTypePMem32
:
1400 EfiPciIoWidthUint32
,
1401 (Node
->PciDev
->VfPciBar
[Node
->Bar
]).Offset
,
1406 Node
->PciDev
->VfPciBar
[Node
->Bar
].BaseAddress
= Address
;
1410 "PCI-IOV B%x.D%x.F%x - VF Bar (Offset - 0x%x) 32Mem (Address - 0x%x)\n",
1411 (UINTN
)Node
->PciDev
->BusNumber
,
1412 (UINTN
)Node
->PciDev
->DeviceNumber
,
1413 (UINTN
)Node
->PciDev
->FunctionNumber
,
1414 (UINTN
)(Node
->PciDev
->VfPciBar
[Node
->Bar
]).Offset
,
1420 case PciBarTypeMem64
:
1421 case PciBarTypePMem64
:
1423 Address32
= (UINT32
) (Address
& 0x00000000FFFFFFFF);
1427 EfiPciIoWidthUint32
,
1428 (Node
->PciDev
->VfPciBar
[Node
->Bar
]).Offset
,
1433 Address32
= (UINT32
) RShiftU64 (Address
, 32);
1437 EfiPciIoWidthUint32
,
1438 ((Node
->PciDev
->VfPciBar
[Node
->Bar
]).Offset
+ 4),
1443 Node
->PciDev
->VfPciBar
[Node
->Bar
].BaseAddress
= Address
;
1447 "PCI-IOV B%x.D%x.F%x - VF Bar (Offset - 0x%x) 64Mem (Address - 0x%lx)\n",
1448 (UINTN
)Node
->PciDev
->BusNumber
,
1449 (UINTN
)Node
->PciDev
->DeviceNumber
,
1450 (UINTN
)Node
->PciDev
->FunctionNumber
,
1451 (UINTN
)(Node
->PciDev
->VfPciBar
[Node
->Bar
]).Offset
,
1457 case PciBarTypeIo16
:
1458 case PciBarTypeIo32
:
1469 Program PCI-PCI bridge apperture.
1471 @param Base Base address for resource.
1472 @param Node Point to resoure node structure.
1476 ProgramPpbApperture (
1478 IN PCI_RESOURCE_NODE
*Node
1481 EFI_PCI_IO_PROTOCOL
*PciIo
;
1487 // If no device resource of this PPB, return anyway
1488 // Apperture is set default in the initialization code
1490 if (Node
->Length
== 0 || Node
->ResourceUsage
== PciResUsagePadding
) {
1492 // For padding resource node, just ignore when programming
1497 PciIo
= &(Node
->PciDev
->PciIo
);
1498 Address
= Base
+ Node
->Offset
;
1501 // Indicate the PPB resource has been allocated
1503 Node
->PciDev
->Allocated
= TRUE
;
1505 switch (Node
->Bar
) {
1511 EfiPciIoWidthUint32
,
1512 (Node
->PciDev
->PciBar
[Node
->Bar
]).Offset
,
1517 Node
->PciDev
->PciBar
[Node
->Bar
].BaseAddress
= Address
;
1518 Node
->PciDev
->PciBar
[Node
->Bar
].Length
= Node
->Length
;
1524 Address32
= ((UINT32
) (Address
)) >> 8;
1536 EfiPciIoWidthUint16
,
1542 Address32
= (UINT32
) (Address
+ Node
->Length
- 1);
1543 Address32
= ((UINT32
) (Address32
)) >> 8;
1555 EfiPciIoWidthUint16
,
1561 Node
->PciDev
->PciBar
[Node
->Bar
].BaseAddress
= Address
;
1562 Node
->PciDev
->PciBar
[Node
->Bar
].Length
= Node
->Length
;
1565 case PPB_MEM32_RANGE
:
1567 Address32
= ((UINT32
) (Address
)) >> 16;
1570 EfiPciIoWidthUint16
,
1576 Address32
= (UINT32
) (Address
+ Node
->Length
- 1);
1577 Address32
= ((UINT32
) (Address32
)) >> 16;
1580 EfiPciIoWidthUint16
,
1586 Node
->PciDev
->PciBar
[Node
->Bar
].BaseAddress
= Address
;
1587 Node
->PciDev
->PciBar
[Node
->Bar
].Length
= Node
->Length
;
1590 case PPB_PMEM32_RANGE
:
1591 case PPB_PMEM64_RANGE
:
1593 Address32
= ((UINT32
) (Address
)) >> 16;
1596 EfiPciIoWidthUint16
,
1602 Address32
= (UINT32
) (Address
+ Node
->Length
- 1);
1603 Address32
= ((UINT32
) (Address32
)) >> 16;
1606 EfiPciIoWidthUint16
,
1612 Address32
= (UINT32
) RShiftU64 (Address
, 32);
1615 EfiPciIoWidthUint32
,
1621 Address32
= (UINT32
) RShiftU64 ((Address
+ Node
->Length
- 1), 32);
1624 EfiPciIoWidthUint32
,
1630 Node
->PciDev
->PciBar
[Node
->Bar
].BaseAddress
= Address
;
1631 Node
->PciDev
->PciBar
[Node
->Bar
].Length
= Node
->Length
;
1640 Program parent bridge for Option Rom.
1642 @param PciDevice Pci deivce instance.
1643 @param OptionRomBase Base address for Optiona Rom.
1644 @param Enable Enable or disable PCI memory.
1648 ProgrameUpstreamBridgeForRom (
1649 IN PCI_IO_DEVICE
*PciDevice
,
1650 IN UINT32 OptionRomBase
,
1654 PCI_IO_DEVICE
*Parent
;
1655 PCI_RESOURCE_NODE Node
;
1657 // For root bridge, just return.
1659 Parent
= PciDevice
->Parent
;
1660 ZeroMem (&Node
, sizeof (Node
));
1661 while (Parent
!= NULL
) {
1662 if (!IS_PCI_BRIDGE (&Parent
->Pci
)) {
1666 Node
.PciDev
= Parent
;
1667 Node
.Length
= PciDevice
->RomSize
;
1669 Node
.Bar
= PPB_MEM32_RANGE
;
1670 Node
.ResType
= PciBarTypeMem32
;
1674 // Program PPB to only open a single <= 16MB apperture
1677 ProgramPpbApperture (OptionRomBase
, &Node
);
1678 PCI_ENABLE_COMMAND_REGISTER (Parent
, EFI_PCI_COMMAND_MEMORY_SPACE
);
1680 InitializePpb (Parent
);
1681 PCI_DISABLE_COMMAND_REGISTER (Parent
, EFI_PCI_COMMAND_MEMORY_SPACE
);
1684 Parent
= Parent
->Parent
;
1689 Test whether resource exists for a bridge.
1691 @param Bridge Point to resource node for a bridge.
1693 @retval TRUE There is resource on the given bridge.
1694 @retval FALSE There isn't resource on the given bridge.
1698 ResourceRequestExisted (
1699 IN PCI_RESOURCE_NODE
*Bridge
1702 if (Bridge
!= NULL
) {
1703 if (!IsListEmpty (&Bridge
->ChildList
) || Bridge
->Length
!= 0) {
1712 Initialize resource pool structure.
1714 @param ResourcePool Point to resource pool structure. This pool
1715 is reset to all zero when returned.
1716 @param ResourceType Type of resource.
1720 InitializeResourcePool (
1721 IN OUT PCI_RESOURCE_NODE
*ResourcePool
,
1722 IN PCI_BAR_TYPE ResourceType
1725 ZeroMem (ResourcePool
, sizeof (PCI_RESOURCE_NODE
));
1726 ResourcePool
->ResType
= ResourceType
;
1727 ResourcePool
->Signature
= PCI_RESOURCE_SIGNATURE
;
1728 InitializeListHead (&ResourcePool
->ChildList
);
1733 Get all resource information for given Pci device.
1735 @param PciDev Pci device instance.
1736 @param IoBridge Io resource node.
1737 @param Mem32Bridge 32-bit memory node.
1738 @param PMem32Bridge 32-bit Pmemory node.
1739 @param Mem64Bridge 64-bit memory node.
1740 @param PMem64Bridge 64-bit PMemory node.
1741 @param IoPool Link list header for Io resource.
1742 @param Mem32Pool Link list header for 32-bit memory.
1743 @param PMem32Pool Link list header for 32-bit Prefetchable memory.
1744 @param Mem64Pool Link list header for 64-bit memory.
1745 @param PMem64Pool Link list header for 64-bit Prefetchable memory.
1750 IN PCI_IO_DEVICE
*PciDev
,
1751 IN PCI_RESOURCE_NODE
**IoBridge
,
1752 IN PCI_RESOURCE_NODE
**Mem32Bridge
,
1753 IN PCI_RESOURCE_NODE
**PMem32Bridge
,
1754 IN PCI_RESOURCE_NODE
**Mem64Bridge
,
1755 IN PCI_RESOURCE_NODE
**PMem64Bridge
,
1756 IN PCI_RESOURCE_NODE
*IoPool
,
1757 IN PCI_RESOURCE_NODE
*Mem32Pool
,
1758 IN PCI_RESOURCE_NODE
*PMem32Pool
,
1759 IN PCI_RESOURCE_NODE
*Mem64Pool
,
1760 IN PCI_RESOURCE_NODE
*PMem64Pool
1764 PCI_RESOURCE_NODE
*Temp
;
1765 LIST_ENTRY
*CurrentLink
;
1767 CurrentLink
= IoPool
->ChildList
.ForwardLink
;
1770 // Get Io resource map
1772 while (CurrentLink
!= &IoPool
->ChildList
) {
1774 Temp
= RESOURCE_NODE_FROM_LINK (CurrentLink
);
1776 if (Temp
->PciDev
== PciDev
) {
1780 CurrentLink
= CurrentLink
->ForwardLink
;
1784 // Get Mem32 resource map
1786 CurrentLink
= Mem32Pool
->ChildList
.ForwardLink
;
1788 while (CurrentLink
!= &Mem32Pool
->ChildList
) {
1790 Temp
= RESOURCE_NODE_FROM_LINK (CurrentLink
);
1792 if (Temp
->PciDev
== PciDev
) {
1793 *Mem32Bridge
= Temp
;
1796 CurrentLink
= CurrentLink
->ForwardLink
;
1800 // Get Pmem32 resource map
1802 CurrentLink
= PMem32Pool
->ChildList
.ForwardLink
;
1804 while (CurrentLink
!= &PMem32Pool
->ChildList
) {
1806 Temp
= RESOURCE_NODE_FROM_LINK (CurrentLink
);
1808 if (Temp
->PciDev
== PciDev
) {
1809 *PMem32Bridge
= Temp
;
1812 CurrentLink
= CurrentLink
->ForwardLink
;
1816 // Get Mem64 resource map
1818 CurrentLink
= Mem64Pool
->ChildList
.ForwardLink
;
1820 while (CurrentLink
!= &Mem64Pool
->ChildList
) {
1822 Temp
= RESOURCE_NODE_FROM_LINK (CurrentLink
);
1824 if (Temp
->PciDev
== PciDev
) {
1825 *Mem64Bridge
= Temp
;
1828 CurrentLink
= CurrentLink
->ForwardLink
;
1832 // Get Pmem64 resource map
1834 CurrentLink
= PMem64Pool
->ChildList
.ForwardLink
;
1836 while (CurrentLink
!= &PMem64Pool
->ChildList
) {
1838 Temp
= RESOURCE_NODE_FROM_LINK (CurrentLink
);
1840 if (Temp
->PciDev
== PciDev
) {
1841 *PMem64Bridge
= Temp
;
1844 CurrentLink
= CurrentLink
->ForwardLink
;
1849 Destory given resource tree.
1851 @param Bridge PCI resource root node of resource tree.
1855 DestroyResourceTree (
1856 IN PCI_RESOURCE_NODE
*Bridge
1859 PCI_RESOURCE_NODE
*Temp
;
1860 LIST_ENTRY
*CurrentLink
;
1862 while (!IsListEmpty (&Bridge
->ChildList
)) {
1864 CurrentLink
= Bridge
->ChildList
.ForwardLink
;
1866 Temp
= RESOURCE_NODE_FROM_LINK (CurrentLink
);
1869 RemoveEntryList (CurrentLink
);
1871 if (IS_PCI_BRIDGE (&(Temp
->PciDev
->Pci
))) {
1872 DestroyResourceTree (Temp
);
1880 Insert resource padding for P2C.
1882 @param PciDev Pci device instance.
1883 @param IoNode Resource info node for IO.
1884 @param Mem32Node Resource info node for 32-bit memory.
1885 @param PMem32Node Resource info node for 32-bit Prefetchable Memory.
1886 @param Mem64Node Resource info node for 64-bit memory.
1887 @param PMem64Node Resource info node for 64-bit Prefetchable Memory.
1891 ResourcePaddingForCardBusBridge (
1892 IN PCI_IO_DEVICE
*PciDev
,
1893 IN PCI_RESOURCE_NODE
*IoNode
,
1894 IN PCI_RESOURCE_NODE
*Mem32Node
,
1895 IN PCI_RESOURCE_NODE
*PMem32Node
,
1896 IN PCI_RESOURCE_NODE
*Mem64Node
,
1897 IN PCI_RESOURCE_NODE
*PMem64Node
1900 PCI_RESOURCE_NODE
*Node
;
1905 // Memory Base/Limit Register 0
1906 // Bar 1 denodes memory range 0
1908 Node
= CreateResourceNode (
1917 InsertResourceNode (
1923 // Memory Base/Limit Register 1
1924 // Bar 2 denodes memory range1
1926 Node
= CreateResourceNode (
1935 InsertResourceNode (
1942 // Bar 3 denodes io range 0
1944 Node
= CreateResourceNode (
1953 InsertResourceNode (
1960 // Bar 4 denodes io range 0
1962 Node
= CreateResourceNode (
1971 InsertResourceNode (
1978 Program PCI Card device register for given resource node.
1980 @param Base Base address of PCI Card device to be programmed.
1981 @param Node Given resource node.
1987 IN PCI_RESOURCE_NODE
*Node
1990 EFI_PCI_IO_PROTOCOL
*PciIo
;
1993 UINT16 BridgeControl
;
1996 PciIo
= &(Node
->PciDev
->PciIo
);
1998 Address
= Base
+ Node
->Offset
;
2001 // Indicate pci bus driver has allocated
2002 // resource for this device
2003 // It might be a temporary solution here since
2004 // pci device could have multiple bar
2006 Node
->PciDev
->Allocated
= TRUE
;
2008 switch (Node
->Bar
) {
2013 EfiPciIoWidthUint32
,
2014 (Node
->PciDev
->PciBar
[Node
->Bar
]).Offset
,
2019 Node
->PciDev
->PciBar
[Node
->Bar
].BaseAddress
= Address
;
2020 Node
->PciDev
->PciBar
[Node
->Bar
].Length
= Node
->Length
;
2026 EfiPciIoWidthUint32
,
2027 PCI_CARD_MEMORY_BASE_0
,
2032 TempAddress
= Address
+ Node
->Length
- 1;
2035 EfiPciIoWidthUint32
,
2036 PCI_CARD_MEMORY_LIMIT_0
,
2041 if (Node
->ResType
== PciBarTypeMem32
) {
2043 // Set non-prefetchable bit
2047 EfiPciIoWidthUint16
,
2048 PCI_CARD_BRIDGE_CONTROL
,
2053 BridgeControl
&= (UINT16
) ~PCI_CARD_PREFETCHABLE_MEMORY_0_ENABLE
;
2056 EfiPciIoWidthUint16
,
2057 PCI_CARD_BRIDGE_CONTROL
,
2064 // Set pre-fetchable bit
2068 EfiPciIoWidthUint16
,
2069 PCI_CARD_BRIDGE_CONTROL
,
2074 BridgeControl
|= PCI_CARD_PREFETCHABLE_MEMORY_0_ENABLE
;
2077 EfiPciIoWidthUint16
,
2078 PCI_CARD_BRIDGE_CONTROL
,
2084 Node
->PciDev
->PciBar
[Node
->Bar
].BaseAddress
= Address
;
2085 Node
->PciDev
->PciBar
[Node
->Bar
].Length
= Node
->Length
;
2086 Node
->PciDev
->PciBar
[Node
->Bar
].BarType
= Node
->ResType
;
2093 EfiPciIoWidthUint32
,
2094 PCI_CARD_MEMORY_BASE_1
,
2099 TempAddress
= Address
+ Node
->Length
- 1;
2103 EfiPciIoWidthUint32
,
2104 PCI_CARD_MEMORY_LIMIT_1
,
2109 if (Node
->ResType
== PciBarTypeMem32
) {
2112 // Set non-prefetchable bit
2116 EfiPciIoWidthUint16
,
2117 PCI_CARD_BRIDGE_CONTROL
,
2122 BridgeControl
&= (UINT16
) ~(PCI_CARD_PREFETCHABLE_MEMORY_1_ENABLE
);
2125 EfiPciIoWidthUint16
,
2126 PCI_CARD_BRIDGE_CONTROL
,
2134 // Set pre-fetchable bit
2138 EfiPciIoWidthUint16
,
2139 PCI_CARD_BRIDGE_CONTROL
,
2144 BridgeControl
|= PCI_CARD_PREFETCHABLE_MEMORY_1_ENABLE
;
2147 EfiPciIoWidthUint16
,
2148 PCI_CARD_BRIDGE_CONTROL
,
2154 Node
->PciDev
->PciBar
[Node
->Bar
].BaseAddress
= Address
;
2155 Node
->PciDev
->PciBar
[Node
->Bar
].Length
= Node
->Length
;
2156 Node
->PciDev
->PciBar
[Node
->Bar
].BarType
= Node
->ResType
;
2162 EfiPciIoWidthUint32
,
2163 PCI_CARD_IO_BASE_0_LOWER
,
2168 TempAddress
= Address
+ Node
->Length
- 1;
2171 EfiPciIoWidthUint32
,
2172 PCI_CARD_IO_LIMIT_0_LOWER
,
2177 Node
->PciDev
->PciBar
[Node
->Bar
].BaseAddress
= Address
;
2178 Node
->PciDev
->PciBar
[Node
->Bar
].Length
= Node
->Length
;
2179 Node
->PciDev
->PciBar
[Node
->Bar
].BarType
= Node
->ResType
;
2186 EfiPciIoWidthUint32
,
2187 PCI_CARD_IO_BASE_1_LOWER
,
2192 TempAddress
= Address
+ Node
->Length
- 1;
2195 EfiPciIoWidthUint32
,
2196 PCI_CARD_IO_LIMIT_1_LOWER
,
2201 Node
->PciDev
->PciBar
[Node
->Bar
].BaseAddress
= Address
;
2202 Node
->PciDev
->PciBar
[Node
->Bar
].Length
= Node
->Length
;
2203 Node
->PciDev
->PciBar
[Node
->Bar
].BarType
= Node
->ResType
;
2212 Create padding resource node.
2214 @param PciDev Pci device instance.
2215 @param IoNode Resource info node for IO.
2216 @param Mem32Node Resource info node for 32-bit memory.
2217 @param PMem32Node Resource info node for 32-bit Prefetchable Memory.
2218 @param Mem64Node Resource info node for 64-bit memory.
2219 @param PMem64Node Resource info node for 64-bit Prefetchable Memory.
2223 ApplyResourcePadding (
2224 IN PCI_IO_DEVICE
*PciDev
,
2225 IN PCI_RESOURCE_NODE
*IoNode
,
2226 IN PCI_RESOURCE_NODE
*Mem32Node
,
2227 IN PCI_RESOURCE_NODE
*PMem32Node
,
2228 IN PCI_RESOURCE_NODE
*Mem64Node
,
2229 IN PCI_RESOURCE_NODE
*PMem64Node
2232 EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR
*Ptr
;
2233 PCI_RESOURCE_NODE
*Node
;
2234 UINT8 DummyBarIndex
;
2237 Ptr
= PciDev
->ResourcePaddingDescriptors
;
2239 while (((EFI_ACPI_END_TAG_DESCRIPTOR
*) Ptr
)->Desc
!= ACPI_END_TAG_DESCRIPTOR
) {
2241 if (Ptr
->Desc
== ACPI_ADDRESS_SPACE_DESCRIPTOR
&& Ptr
->ResType
== ACPI_ADDRESS_SPACE_TYPE_IO
) {
2242 if (Ptr
->AddrLen
!= 0) {
2244 Node
= CreateResourceNode (
2252 InsertResourceNode (
2262 if (Ptr
->Desc
== ACPI_ADDRESS_SPACE_DESCRIPTOR
&& Ptr
->ResType
== ACPI_ADDRESS_SPACE_TYPE_MEM
) {
2264 if (Ptr
->AddrSpaceGranularity
== 32) {
2269 if (Ptr
->SpecificFlag
== 0x6) {
2270 if (Ptr
->AddrLen
!= 0) {
2271 Node
= CreateResourceNode (
2279 InsertResourceNode (
2292 if (Ptr
->SpecificFlag
== 0) {
2293 if (Ptr
->AddrLen
!= 0) {
2294 Node
= CreateResourceNode (
2302 InsertResourceNode (
2313 if (Ptr
->AddrSpaceGranularity
== 64) {
2318 if (Ptr
->SpecificFlag
== 0x6) {
2319 if (Ptr
->AddrLen
!= 0) {
2320 Node
= CreateResourceNode (
2328 InsertResourceNode (
2341 if (Ptr
->SpecificFlag
== 0) {
2342 if (Ptr
->AddrLen
!= 0) {
2343 Node
= CreateResourceNode (
2351 InsertResourceNode (
2368 Get padding resource for PCI-PCI bridge.
2370 @param PciIoDevice PCI-PCI bridge device instance.
2372 @note Feature flag PcdPciBusHotplugDeviceSupport determines
2373 whether need to pad resource for them.
2376 GetResourcePaddingPpb (
2377 IN PCI_IO_DEVICE
*PciIoDevice
2380 if (gPciHotPlugInit
!= NULL
&& FeaturePcdGet (PcdPciBusHotplugDeviceSupport
)) {
2381 if (PciIoDevice
->ResourcePaddingDescriptors
== NULL
) {
2382 GetResourcePaddingForHpb (PciIoDevice
);