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| author | Jiahui Cen via groups.io <cenjiahui=huawei.com@groups.io> | 2021-01-19 09:12:55 +0800 |
|---|---|---|
| committer | mergify[bot] <37929162+mergify[bot]@users.noreply.github.com> | 2021-01-20 16:14:20 +0000 |
| commit | 7ac1f28d4dbd0d47a0336c841388e77051fca001 (patch) | |
| tree | ff9559520bc34c755c2afab03890bc7b8c7ffe68 /OvmfPkg/Library/PciHostBridgeUtilityLib | |
| parent | 517055d29886116f49d086daf17c8ddb1c4e6074 (diff) | |
| download | edk2-7ac1f28d4dbd0d47a0336c841388e77051fca001.tar.gz edk2-7ac1f28d4dbd0d47a0336c841388e77051fca001.tar.bz2 edk2-7ac1f28d4dbd0d47a0336c841388e77051fca001.zip | |
OvmfPkg/PciHostBridgeLib: Extract InitRootBridge() / UninitRootBridge()
Extract InitRootBridge() / UninitRootBridge() to PciHostBridgeUtilityLib
as common utility functions. No change of functionality.
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: <20210119011302.10908-5-cenjiahui@huawei.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Diffstat (limited to 'OvmfPkg/Library/PciHostBridgeUtilityLib')
| -rw-r--r-- | OvmfPkg/Library/PciHostBridgeUtilityLib/PciHostBridgeUtilityLib.c | 158 | ||||
| -rw-r--r-- | OvmfPkg/Library/PciHostBridgeUtilityLib/PciHostBridgeUtilityLib.inf | 8 |
2 files changed, 166 insertions, 0 deletions
diff --git a/OvmfPkg/Library/PciHostBridgeUtilityLib/PciHostBridgeUtilityLib.c b/OvmfPkg/Library/PciHostBridgeUtilityLib/PciHostBridgeUtilityLib.c index ac94e62612..92b42566e5 100644 --- a/OvmfPkg/Library/PciHostBridgeUtilityLib/PciHostBridgeUtilityLib.c +++ b/OvmfPkg/Library/PciHostBridgeUtilityLib/PciHostBridgeUtilityLib.c @@ -11,16 +11,174 @@ **/
#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>
+#pragma pack(1)
+typedef struct {
+ ACPI_HID_DEVICE_PATH AcpiDevicePath;
+ EFI_DEVICE_PATH_PROTOCOL EndDevicePath;
+} OVMF_PCI_ROOT_BRIDGE_DEVICE_PATH;
+#pragma pack ()
+
+
GLOBAL_REMOVE_IF_UNREFERENCED
CHAR16 *mPciHostBridgeUtilityLibAcpiAddressSpaceTypeStr[] = {
L"Mem", L"I/O", L"Bus"
};
+STATIC
+CONST
+OVMF_PCI_ROOT_BRIDGE_DEVICE_PATH mRootBridgeDevicePathTemplate = {
+ {
+ {
+ ACPI_DEVICE_PATH,
+ ACPI_DP,
+ {
+ (UINT8) (sizeof(ACPI_HID_DEVICE_PATH)),
+ (UINT8) ((sizeof(ACPI_HID_DEVICE_PATH)) >> 8)
+ }
+ },
+ EISA_PNP_ID(0x0A03), // HID
+ 0 // UID
+ },
+
+ {
+ END_DEVICE_PATH_TYPE,
+ END_ENTIRE_DEVICE_PATH_SUBTYPE,
+ {
+ END_DEVICE_PATH_LENGTH,
+ 0
+ }
+ }
+};
+
+
+/**
+ Utility function to initialize a PCI_ROOT_BRIDGE structure.
+
+ @param[in] Supports Supported attributes.
+
+ @param[in] Attributes Initial attributes.
+
+ @param[in] AllocAttributes Allocation attributes.
+
+ @param[in] RootBusNumber The bus number to store in RootBus.
+
+ @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.
+
+ 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] Io IO aperture.
+
+ @param[in] Mem MMIO aperture.
+
+ @param[in] MemAbove4G MMIO aperture above 4G.
+
+ @param[in] PMem Prefetchable MMIO aperture.
+
+ @param[in] PMemAbove4G Prefetchable MMIO aperture above 4G.
+
+ @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
+PciHostBridgeUtilityInitRootBridge (
+ IN UINT64 Supports,
+ IN UINT64 Attributes,
+ IN UINT64 AllocAttributes,
+ IN UINT8 RootBusNumber,
+ IN UINT8 MaxSubBusNumber,
+ IN PCI_ROOT_BRIDGE_APERTURE *Io,
+ IN PCI_ROOT_BRIDGE_APERTURE *Mem,
+ IN PCI_ROOT_BRIDGE_APERTURE *MemAbove4G,
+ IN PCI_ROOT_BRIDGE_APERTURE *PMem,
+ IN PCI_ROOT_BRIDGE_APERTURE *PMemAbove4G,
+ OUT PCI_ROOT_BRIDGE *RootBus
+ )
+{
+ OVMF_PCI_ROOT_BRIDGE_DEVICE_PATH *DevicePath;
+
+ //
+ // Be safe if other fields are added to PCI_ROOT_BRIDGE later.
+ //
+ ZeroMem (RootBus, sizeof *RootBus);
+
+ RootBus->Segment = 0;
+
+ RootBus->Supports = Supports;
+ RootBus->Attributes = Attributes;
+
+ RootBus->DmaAbove4G = FALSE;
+
+ RootBus->AllocationAttributes = AllocAttributes;
+ RootBus->Bus.Base = RootBusNumber;
+ RootBus->Bus.Limit = MaxSubBusNumber;
+ CopyMem (&RootBus->Io, Io, sizeof (*Io));
+ CopyMem (&RootBus->Mem, Mem, sizeof (*Mem));
+ CopyMem (&RootBus->MemAbove4G, MemAbove4G, sizeof (*MemAbove4G));
+ CopyMem (&RootBus->PMem, PMem, sizeof (*PMem));
+ CopyMem (&RootBus->PMemAbove4G, PMemAbove4G, sizeof (*PMemAbove4G));
+
+ RootBus->NoExtendedConfigSpace = (PcdGet16 (PcdOvmfHostBridgePciDevId) !=
+ INTEL_Q35_MCH_DEVICE_ID);
+
+ DevicePath = AllocateCopyPool (sizeof mRootBridgeDevicePathTemplate,
+ &mRootBridgeDevicePathTemplate);
+ if (DevicePath == NULL) {
+ DEBUG ((DEBUG_ERROR, "%a: %r\n", __FUNCTION__, EFI_OUT_OF_RESOURCES));
+ return EFI_OUT_OF_RESOURCES;
+ }
+ DevicePath->AcpiDevicePath.UID = RootBusNumber;
+ RootBus->DevicePath = (EFI_DEVICE_PATH_PROTOCOL *)DevicePath;
+
+ DEBUG ((DEBUG_INFO,
+ "%a: populated root bus %d, with room for %d subordinate bus(es)\n",
+ __FUNCTION__, RootBusNumber, MaxSubBusNumber - RootBusNumber));
+ return EFI_SUCCESS;
+}
+
+
+/**
+ Utility function to uninitialize a PCI_ROOT_BRIDGE structure set up with
+ PciHostBridgeUtilityInitRootBridge().
+
+ @param[in] RootBus The PCI_ROOT_BRIDGE structure, allocated by the caller and
+ initialized with PciHostBridgeUtilityInitRootBridge(),
+ that should be uninitialized. This function doesn't free
+ RootBus.
+**/
+VOID
+EFIAPI
+PciHostBridgeUtilityUninitRootBridge (
+ IN PCI_ROOT_BRIDGE *RootBus
+ )
+{
+ FreePool (RootBus->DevicePath);
+}
+
+
/**
Utility function to inform the platform that the resource conflict happens.
diff --git a/OvmfPkg/Library/PciHostBridgeUtilityLib/PciHostBridgeUtilityLib.inf b/OvmfPkg/Library/PciHostBridgeUtilityLib/PciHostBridgeUtilityLib.inf index 1ba8ec3e03..e3d0a37409 100644 --- a/OvmfPkg/Library/PciHostBridgeUtilityLib/PciHostBridgeUtilityLib.inf +++ b/OvmfPkg/Library/PciHostBridgeUtilityLib/PciHostBridgeUtilityLib.inf @@ -30,8 +30,16 @@ PciHostBridgeUtilityLib.c
[Packages]
+ MdeModulePkg/MdeModulePkg.dec
MdePkg/MdePkg.dec
OvmfPkg/OvmfPkg.dec
[LibraryClasses]
+ BaseMemoryLib
DebugLib
+ DevicePathLib
+ MemoryAllocationLib
+ PcdLib
+
+[Pcd]
+ gUefiOvmfPkgTokenSpaceGuid.PcdOvmfHostBridgePciDevId
|