[PATCH v3 18/46] Silicon/Phytium: Added PciHostBridgeLib to FT2000/4

[Ling Jia <jialing@phytium.com.cn>]

The Pci host bridge library is mainly
to get Pci bridge information.

v3:
Optimize the codes of PciHostBridgeLib.c to conform to specifications.

Signed-off-by: Ling Jia <jialing@phytium.com.cn>
Reviewed-by: Leif Lindholm <leif@nuviainc.com>
---
 Platform/Phytium/DurianPkg/DurianPkg.dsc                                  |   9 +
 Platform/Phytium/DurianPkg/DurianPkg.fdf                                  |   6 +
 Silicon/Phytium/FT2000-4Pkg/Library/PciHostBridgeLib/PciHostBridgeLib.inf |  47 +++++
 Silicon/Phytium/FT2000-4Pkg/Library/PciHostBridgeLib/PciHostBridgeLib.c   | 181 ++++++++++++++++++++
 4 files changed, 243 insertions(+)

diff --git a/Platform/Phytium/DurianPkg/DurianPkg.dsc b/Platform/Phytium/DurianPkg/DurianPkg.dsc
index 093b2cd9dbd4..3a9bc2289cf3 100644
--- a/Platform/Phytium/DurianPkg/DurianPkg.dsc
+++ b/Platform/Phytium/DurianPkg/DurianPkg.dsc
@@ -37,6 +37,7 @@ [LibraryClasses.common]
 [LibraryClasses.common.DXE_DRIVER]
   # Pci dependencies
   PciSegmentLib|Silicon/Phytium/FT2000-4Pkg/Library/PciSegmentLib/PciSegmentLib.inf
+  PciHostBridgeLib|Silicon/Phytium/FT2000-4Pkg/Library/PciHostBridgeLib/PciHostBridgeLib.inf
 
 ################################################################################
 #
@@ -263,6 +264,14 @@ [Components.common]
   MdeModulePkg/Bus/Scsi/ScsiDiskDxe/ScsiDiskDxe.inf
   MdeModulePkg/Bus/Ata/AtaAtapiPassThru/AtaAtapiPassThru.inf
 
+  #
+  # PCI Support
+  #
+  ArmPkg/Drivers/ArmPciCpuIo2Dxe/ArmPciCpuIo2Dxe.inf
+  MdeModulePkg/Bus/Pci/PciHostBridgeDxe/PciHostBridgeDxe.inf
+  MdeModulePkg/Bus/Pci/PciBusDxe/PciBusDxe.inf
+  MdeModulePkg/Bus/Pci/NonDiscoverablePciDeviceDxe/NonDiscoverablePciDeviceDxe.inf
+
   #
   # The following 2 module perform the same work except one operate variable.
   # Only one of both should be put into fdf.
diff --git a/Platform/Phytium/DurianPkg/DurianPkg.fdf b/Platform/Phytium/DurianPkg/DurianPkg.fdf
index 3106a43fb744..a443d0f3a4ac 100644
--- a/Platform/Phytium/DurianPkg/DurianPkg.fdf
+++ b/Platform/Phytium/DurianPkg/DurianPkg.fdf
@@ -135,6 +135,12 @@ [FV.FvMain]
   INF FatPkg/EnhancedFatDxe/Fat.inf
   INF MdeModulePkg/Universal/Disk/UnicodeCollation/EnglishDxe/EnglishDxe.inf
 
+  #
+  # PCI Support
+  #
+  INF MdeModulePkg/Bus/Pci/PciBusDxe/PciBusDxe.inf
+  INF MdeModulePkg/Bus/Pci/PciHostBridgeDxe/PciHostBridgeDxe.inf
+
   #
   # SATA Controller
   #
diff --git a/Silicon/Phytium/FT2000-4Pkg/Library/PciHostBridgeLib/PciHostBridgeLib.inf b/Silicon/Phytium/FT2000-4Pkg/Library/PciHostBridgeLib/PciHostBridgeLib.inf
new file mode 100644
index 000000000000..0e6f0797b0fe
--- /dev/null
+++ b/Silicon/Phytium/FT2000-4Pkg/Library/PciHostBridgeLib/PciHostBridgeLib.inf
@@ -0,0 +1,47 @@
+#/** @file
+#  PCI Host Bridge Library instance for Phytium SOC.
+#
+#  Copyright (C) 2020, Phytium Technology Co, Ltd. All rights reserved.<BR>
+#
+#  SPDX-License-Identifier: BSD-2-Clause-Patent
+#
+#**/
+
+[Defines]
+  INF_VERSION                    = 0x0001001b
+  BASE_NAME                      = PciHostBridgeLib
+  FILE_GUID                      = f965de0e-40fe-11eb-8290-3f9d1f895a80
+  MODULE_TYPE                    = DXE_DRIVER
+  VERSION_STRING                 = 1.0
+  LIBRARY_CLASS                  = PciHostBridgeLib|DXE_DRIVER
+
+#
+# The following information is for reference only and not required by the build
+# tools.
+#
+#  VALID_ARCHITECTURES           = ARM AARCH64
+#
+
+[Sources]
+  PciHostBridgeLib.c
+
+[Packages]
+  ArmPkg/ArmPkg.dec
+  MdePkg/MdePkg.dec
+  MdeModulePkg/MdeModulePkg.dec
+  Silicon/Phytium/PhytiumCommonPkg/PhytiumCommonPkg.dec
+
+[LibraryClasses]
+  DebugLib
+
+[Guids]
+
+[FixedPcd]
+  gArmTokenSpaceGuid.PcdPciBusMin
+  gArmTokenSpaceGuid.PcdPciBusMax
+  gArmTokenSpaceGuid.PcdPciIoBase
+  gArmTokenSpaceGuid.PcdPciIoSize
+  gArmTokenSpaceGuid.PcdPciMmio32Base
+  gArmTokenSpaceGuid.PcdPciMmio32Size
+  gArmTokenSpaceGuid.PcdPciMmio64Base
+  gArmTokenSpaceGuid.PcdPciMmio64Size
diff --git a/Silicon/Phytium/FT2000-4Pkg/Library/PciHostBridgeLib/PciHostBridgeLib.c b/Silicon/Phytium/FT2000-4Pkg/Library/PciHostBridgeLib/PciHostBridgeLib.c
new file mode 100644
index 000000000000..8ed3516749a1
--- /dev/null
+++ b/Silicon/Phytium/FT2000-4Pkg/Library/PciHostBridgeLib/PciHostBridgeLib.c
@@ -0,0 +1,181 @@
+/** @file
+  PCI host bridge library instance for Phytium SOC.
+
+  Copyright (C) 2020, Phytium Technology Co Ltd. All rights reserved.<BR>
+
+  SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+
+#include <Library/DebugLib.h>
+#include <Library/DevicePathLib.h>
+#include <Library/PciHostBridgeLib.h>
+#include <Protocol/PciHostBridgeResourceAllocation.h>
+#include <Protocol/PciRootBridgeIo.h>
+
+#pragma pack(1)
+
+typedef struct {
+  ACPI_HID_DEVICE_PATH     AcpiDevicePath;
+  EFI_DEVICE_PATH_PROTOCOL EndDevicePath;
+} EFI_PCI_ROOT_BRIDGE_DEVICE_PATH;
+
+#pragma pack ()
+
+#define END_DEVICE_PATH_DEF { END_DEVICE_PATH_TYPE, \
+                              END_ENTIRE_DEVICE_PATH_SUBTYPE, \
+                              { END_DEVICE_PATH_LENGTH, 0 } \
+                            }
+
+#define ACPI_DEVICE_PATH_DEF(UID) {{ ACPI_DEVICE_PATH, ACPI_DP, \
+                                     { (UINT8) (sizeof (ACPI_HID_DEVICE_PATH)), \
+                                       (UINT8) (sizeof (ACPI_HID_DEVICE_PATH) >> 8)} \
+                                     }, \
+                                     EISA_PNP_ID (0x0A03), UID \
+                                  }
+
+STATIC CONST EFI_PCI_ROOT_BRIDGE_DEVICE_PATH mEfiPciRootBridgeDevicePath[] = {
+  {
+    ACPI_DEVICE_PATH_DEF (0),
+    END_DEVICE_PATH_DEF
+  },
+};
+
+GLOBAL_REMOVE_IF_UNREFERENCED
+CHAR16 *mPciHostBridgeLibAcpiAddressSpaceTypeStr[] = {
+  L"Mem", L"I/O", L"Bus"
+};
+
+STATIC PCI_ROOT_BRIDGE mRootBridge = {
+  0,                                              // Segment
+  0,                                              // Supports
+  0,                                              // Attributes
+  TRUE,                                           // DmaAbove4G
+  FALSE,                                          // NoExtendedConfigSpace
+  FALSE,                                          // ResourceAssigned
+  EFI_PCI_HOST_BRIDGE_COMBINE_MEM_PMEM |          // AllocationAttributes
+  EFI_PCI_HOST_BRIDGE_MEM64_DECODE,
+  {
+    // Bus
+    FixedPcdGet32 (PcdPciBusMin),
+    FixedPcdGet32 (PcdPciBusMax)
+  }, {
+    // Io
+    FixedPcdGet64 (PcdPciIoBase),
+    FixedPcdGet64 (PcdPciIoBase) + FixedPcdGet64 (PcdPciIoSize) - 1
+  }, {
+    // Mem
+    FixedPcdGet32 (PcdPciMmio32Base),
+    FixedPcdGet32 (PcdPciMmio32Base) + (FixedPcdGet32 (PcdPciMmio32Size) - 1)
+    //0x7FFFFFFF
+  }, {
+    // MemAbove4G
+    FixedPcdGet64 (PcdPciMmio64Base),
+    FixedPcdGet64 (PcdPciMmio64Base) + FixedPcdGet64 (PcdPciMmio64Size) - 1
+  }, {
+    // PMem
+    MAX_UINT64,
+    0
+  }, {
+    // PMemAbove4G
+    MAX_UINT64,
+    0
+  },
+  (EFI_DEVICE_PATH_PROTOCOL *)&mEfiPciRootBridgeDevicePath
+};
+
+/**
+  Return all the root bridge instances in an array.
+
+  @param[out] Count  Return the count of root bridge instances.
+
+  @return All the root bridge instances in an array.
+          The array should be passed into PciHostBridgeFreeRootBridges()
+          when it's not used.
+
+**/
+PCI_ROOT_BRIDGE *
+EFIAPI
+PciHostBridgeGetRootBridges (
+  OUT UINTN     *Count
+  )
+{
+  *Count = 1;
+  return &mRootBridge;
+}
+
+
+/**
+  Free the root bridge instances array returned from PciHostBridgeGetRootBridges().
+
+  @param[in] Bridges The root bridge instances array.
+  @param[in] Count   The count of the array.
+
+**/
+VOID
+EFIAPI
+PciHostBridgeFreeRootBridges (
+  IN PCI_ROOT_BRIDGE *Bridges,
+  IN UINTN           Count
+  )
+{
+
+}
+
+
+/**
+  Inform the platform that the resource conflict happens.
+
+  @param[in] HostBridgeHandle Handle of the Host Bridge.
+  @param[in] Configuration    Pointer to PCI I/O and PCI memory resource
+                          descriptors. The Configuration contains the resources
+                          for all the root bridges. The resource for each root
+                          bridge is terminated with END descriptor and an
+                          additional END is appended indicating the end of the
+                          entire resources. The resource descriptor field
+                          values follow the description in
+                          EFI_PCI_HOST_BRIDGE_RESOURCE_ALLOCATION_PROTOCOL
+                          SubmitResources().
+
+**/
+VOID
+EFIAPI
+PciHostBridgeResourceConflict (
+  IN EFI_HANDLE                        HostBridgeHandle,
+  IN VOID                              *Configuration
+  )
+{
+  EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR *Descriptor;
+  BOOLEAN IsPrefetchable;
+
+  Descriptor = (EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR *) Configuration;
+  while (Descriptor->Desc == ACPI_ADDRESS_SPACE_DESCRIPTOR) {
+    for (; Descriptor->Desc == ACPI_ADDRESS_SPACE_DESCRIPTOR; Descriptor++) {
+      ASSERT (Descriptor->ResType <
+              ARRAY_SIZE (mPciHostBridgeLibAcpiAddressSpaceTypeStr));
+      DEBUG ((DEBUG_INFO, " %s: Length/Alignment = 0x%lx / 0x%lx\n",
+              mPciHostBridgeLibAcpiAddressSpaceTypeStr[Descriptor->ResType],
+              Descriptor->AddrLen,
+              Descriptor->AddrRangeMax
+              ));
+      if (Descriptor->ResType == ACPI_ADDRESS_SPACE_TYPE_MEM) {
+
+        IsPrefetchable = (Descriptor->SpecificFlag &
+          EFI_ACPI_MEMORY_RESOURCE_SPECIFIC_FLAG_CACHEABLE_PREFETCHABLE) != 0;
+
+        DEBUG ((DEBUG_INFO, "     Granularity/SpecificFlag = %ld / %02x%s\n",
+          Descriptor->AddrSpaceGranularity,
+          Descriptor->SpecificFlag,
+          (IsPrefetchable) ? L" (Prefetchable)" : L""
+          ));
+      }
+    }
+    //
+    // Skip the end descriptor for root bridge
+    //
+    ASSERT (Descriptor->Desc == ACPI_END_TAG_DESCRIPTOR);
+    Descriptor = (EFI_ACPI_ADDRESS_SPACE_DESCRIPTOR *) (
+                   (EFI_ACPI_END_TAG_DESCRIPTOR *)Descriptor + 1
+                   );
+  }
+}
-- 
2.25.1