OvmfPkg/PciHostBridgeUtilityLib: Extend parameters of InitRootBridge()

Extend parameter list of PciHostBridgeUtilityInitRootBridge() with
DmaAbove4G and NoExtendedConfigSpace to prepare for sharing with
ArmVirtPkg.

BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=3059

Cc: Jordan Justen <jordan.l.justen@intel.com>
Cc: Laszlo Ersek <lersek@redhat.com>
Cc: Ard Biesheuvel <ard.biesheuvel@arm.com>
Cc: Anthony Perard <anthony.perard@citrix.com>
Cc: Julien Grall <julien@xen.org>
Signed-off-by: Jiahui Cen <cenjiahui@huawei.com>
Signed-off-by: Yubo Miao <miaoyubo@huawei.com>
Message-Id: <20210119011302.10908-6-cenjiahui@huawei.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>

5 files changed, 41 insertions, 33 deletions

diff --git a/OvmfPkg/Library/PciHostBridgeLib/PciHostBridgeLib.c b/OvmfPkg/Library/PciHostBridgeLib/PciHostBridgeLib.c
index 07fa981..8758d7c 100644
--- a/OvmfPkg/Library/PciHostBridgeLib/PciHostBridgeLib.c
+++ b/OvmfPkg/Library/PciHostBridgeLib/PciHostBridgeLib.c
@@ -10,6 +10,7 @@
 #include <PiDxe.h>

 

 #include <IndustryStandard/Pci.h>

+#include <IndustryStandard/Q35MchIch9.h>

 

 #include <Protocol/PciHostBridgeResourceAllocation.h>

 #include <Protocol/PciRootBridgeIo.h>

@@ -151,6 +152,8 @@ PciHostBridgeGetRootBridges (
         Attributes,

         Attributes,

         AllocationAttributes,

+        FALSE,

+        PcdGet16 (PcdOvmfHostBridgePciDevId) != INTEL_Q35_MCH_DEVICE_ID,

         (UINT8) LastRootBridgeNumber,

         (UINT8) (RootBridgeNumber - 1),

         &Io,

@@ -176,6 +179,8 @@ PciHostBridgeGetRootBridges (
     Attributes,

     Attributes,

     AllocationAttributes,

+    FALSE,

+    PcdGet16 (PcdOvmfHostBridgePciDevId) != INTEL_Q35_MCH_DEVICE_ID,

     (UINT8) LastRootBridgeNumber,

     PCI_MAX_BUS,

     &Io,

diff --git a/OvmfPkg/Library/PciHostBridgeLib/PciHostBridgeLib.inf b/OvmfPkg/Library/PciHostBridgeLib/PciHostBridgeLib.inf
index 7944f94..7245826 100644
--- a/OvmfPkg/Library/PciHostBridgeLib/PciHostBridgeLib.inf
+++ b/OvmfPkg/Library/PciHostBridgeLib/PciHostBridgeLib.inf
@@ -50,4 +50,5 @@
   gUefiOvmfPkgTokenSpaceGuid.PcdPciMmio32Size

   gUefiOvmfPkgTokenSpaceGuid.PcdPciMmio64Base

   gUefiOvmfPkgTokenSpaceGuid.PcdPciMmio64Size

+  gUefiOvmfPkgTokenSpaceGuid.PcdOvmfHostBridgePciDevId

   gEfiMdeModulePkgTokenSpaceGuid.PcdPciDisableBusEnumeration

diff --git a/OvmfPkg/Library/PciHostBridgeLib/XenSupport.c b/OvmfPkg/Library/PciHostBridgeLib/XenSupport.c
index 5dfeba0..9ef39f0 100644
--- a/OvmfPkg/Library/PciHostBridgeLib/XenSupport.c
+++ b/OvmfPkg/Library/PciHostBridgeLib/XenSupport.c
@@ -456,6 +456,7 @@ ScanForRootBridges (
       ASSERT (RootBridges != NULL);

       PciHostBridgeUtilityInitRootBridge (

         Attributes, Attributes, 0,

+        FALSE, PcdGet16 (PcdOvmfHostBridgePciDevId) != INTEL_Q35_MCH_DEVICE_ID,

         (UINT8) PrimaryBus, (UINT8) SubBus,

         &Io, &Mem, &MemAbove4G, &mNonExistAperture, &mNonExistAperture,

         &RootBridges[*NumberOfRootBridges]

diff --git a/OvmfPkg/Library/PciHostBridgeUtilityLib/PciHostBridgeUtilityLib.c b/OvmfPkg/Library/PciHostBridgeUtilityLib/PciHostBridgeUtilityLib.c
index 92b4256..bed2d87 100644
--- a/OvmfPkg/Library/PciHostBridgeUtilityLib/PciHostBridgeUtilityLib.c
+++ b/OvmfPkg/Library/PciHostBridgeUtilityLib/PciHostBridgeUtilityLib.c
@@ -11,12 +11,10 @@
 **/

 

 #include <IndustryStandard/Acpi10.h>

-#include <IndustryStandard/Q35MchIch9.h>

 #include <Library/BaseMemoryLib.h>

 #include <Library/DebugLib.h>

 #include <Library/DevicePathLib.h>

 #include <Library/MemoryAllocationLib.h>

-#include <Library/PcdLib.h>

 #include <Library/PciHostBridgeUtilityLib.h>

 

 

@@ -64,43 +62,49 @@ OVMF_PCI_ROOT_BRIDGE_DEVICE_PATH mRootBridgeDevicePathTemplate = {
 /**

   Utility function to initialize a PCI_ROOT_BRIDGE structure.

 

-  @param[in]  Supports         Supported attributes.

+  @param[in]  Supports               Supported attributes.

 

-  @param[in]  Attributes       Initial attributes.

+  @param[in]  Attributes             Initial attributes.

 

-  @param[in]  AllocAttributes  Allocation attributes.

+  @param[in]  AllocAttributes        Allocation attributes.

 

-  @param[in]  RootBusNumber    The bus number to store in RootBus.

+  @param[in]  DmaAbove4G             DMA above 4GB memory.

 

-  @param[in]  MaxSubBusNumber  The inclusive maximum bus number that can be

-                               assigned to any subordinate bus found behind any

-                               PCI bridge hanging off this root bus.

+  @param[in]  NoExtendedConfigSpace  No Extended Config Space.

 

-                               The caller is repsonsible for ensuring that

-                               RootBusNumber <= MaxSubBusNumber. If

-                               RootBusNumber equals MaxSubBusNumber, then the

-                               root bus has no room for subordinate buses.

+  @param[in]  RootBusNumber          The bus number to store in RootBus.

 

-  @param[in]  Io               IO aperture.

+  @param[in]  MaxSubBusNumber        The inclusive maximum bus number that can

+                                     be assigned to any subordinate bus found

+                                     behind any PCI bridge hanging off this

+                                     root bus.

 

-  @param[in]  Mem              MMIO aperture.

+                                     The caller is repsonsible for ensuring

+                                     that RootBusNumber <= MaxSubBusNumber. If

+                                     RootBusNumber equals MaxSubBusNumber, then

+                                     the root bus has no room for subordinate

+                                     buses.

 

-  @param[in]  MemAbove4G       MMIO aperture above 4G.

+  @param[in]  Io                     IO aperture.

 

-  @param[in]  PMem             Prefetchable MMIO aperture.

+  @param[in]  Mem                    MMIO aperture.

 

-  @param[in]  PMemAbove4G      Prefetchable MMIO aperture above 4G.

+  @param[in]  MemAbove4G             MMIO aperture above 4G.

 

-  @param[out] RootBus          The PCI_ROOT_BRIDGE structure (allocated by the

-                               caller) that should be filled in by this

-                               function.

+  @param[in]  PMem                   Prefetchable MMIO aperture.

 

-  @retval EFI_SUCCESS           Initialization successful. A device path

-                                consisting of an ACPI device path node, with

-                                UID = RootBusNumber, has been allocated and

-                                linked into RootBus.

+  @param[in]  PMemAbove4G            Prefetchable MMIO aperture above 4G.

 

-  @retval EFI_OUT_OF_RESOURCES  Memory allocation failed.

+  @param[out] RootBus                The PCI_ROOT_BRIDGE structure (allocated

+                                     by the caller) that should be filled in by

+                                     this function.

+

+  @retval EFI_SUCCESS                Initialization successful. A device path

+                                     consisting of an ACPI device path node,

+                                     with UID = RootBusNumber, has been

+                                     allocated and linked into RootBus.

+

+  @retval EFI_OUT_OF_RESOURCES       Memory allocation failed.

 **/

 EFI_STATUS

 EFIAPI

@@ -108,6 +112,8 @@ PciHostBridgeUtilityInitRootBridge (
   IN  UINT64                   Supports,

   IN  UINT64                   Attributes,

   IN  UINT64                   AllocAttributes,

+  IN  BOOLEAN                  DmaAbove4G,

+  IN  BOOLEAN                  NoExtendedConfigSpace,

   IN  UINT8                    RootBusNumber,

   IN  UINT8                    MaxSubBusNumber,

   IN  PCI_ROOT_BRIDGE_APERTURE *Io,

@@ -130,7 +136,7 @@ PciHostBridgeUtilityInitRootBridge (
   RootBus->Supports   = Supports;

   RootBus->Attributes = Attributes;

 

-  RootBus->DmaAbove4G = FALSE;

+  RootBus->DmaAbove4G = DmaAbove4G;

 

   RootBus->AllocationAttributes = AllocAttributes;

   RootBus->Bus.Base  = RootBusNumber;

@@ -141,8 +147,7 @@ PciHostBridgeUtilityInitRootBridge (
   CopyMem (&RootBus->PMem, PMem, sizeof (*PMem));

   CopyMem (&RootBus->PMemAbove4G, PMemAbove4G, sizeof (*PMemAbove4G));

 

-  RootBus->NoExtendedConfigSpace = (PcdGet16 (PcdOvmfHostBridgePciDevId) !=

-                                    INTEL_Q35_MCH_DEVICE_ID);

+  RootBus->NoExtendedConfigSpace = NoExtendedConfigSpace;

 

   DevicePath = AllocateCopyPool (sizeof mRootBridgeDevicePathTemplate,

                  &mRootBridgeDevicePathTemplate);

diff --git a/OvmfPkg/Library/PciHostBridgeUtilityLib/PciHostBridgeUtilityLib.inf b/OvmfPkg/Library/PciHostBridgeUtilityLib/PciHostBridgeUtilityLib.inf
index e3d0a37..4d6764b 100644
--- a/OvmfPkg/Library/PciHostBridgeUtilityLib/PciHostBridgeUtilityLib.inf
+++ b/OvmfPkg/Library/PciHostBridgeUtilityLib/PciHostBridgeUtilityLib.inf
@@ -39,7 +39,3 @@
   DebugLib

   DevicePathLib

   MemoryAllocationLib

-  PcdLib

-

-[Pcd]

-  gUefiOvmfPkgTokenSpaceGuid.PcdOvmfHostBridgePciDevId