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| author | Laszlo Ersek <lersek@redhat.com> | 2016-01-26 00:52:05 +0100 |
|---|---|---|
| committer | Laszlo Ersek <lersek@redhat.com> | 2016-03-03 18:18:43 +0100 |
| commit | 1f4e2299e755a329131385dce6af4efc5ec0a038 (patch) | |
| tree | 3722028ebab036303177c8e3047c2b2321630025 /OvmfPkg/Library/PciHostBridgeLib | |
| parent | cb81595b5d747c60e5ff9d4e048159c59085be6f (diff) | |
| download | edk2-1f4e2299e755a329131385dce6af4efc5ec0a038.tar.gz edk2-1f4e2299e755a329131385dce6af4efc5ec0a038.tar.bz2 edk2-1f4e2299e755a329131385dce6af4efc5ec0a038.zip | |
OvmfPkg: PciHostBridgeLib: initialize RootBus->DevicePath
We copy the code from InitRootBridge()
[OvmfPkg/PciHostBridgeDxe/PciHostBridge.c], with a slight change: the
device path is allocated separately now.
This is the final field to initialize in PCI_ROOT_BRIDGE.
The type EFI_PCI_ROOT_BRIDGE_DEVICE_PATH is renamed to
OVMF_PCI_ROOT_BRIDGE_DEVICE_PATH. The original is a misnomer (it is not a
standard UEFI type) that dates back to PcAtChipsetPkg/PciHostBridgeDxe.
Simply removing the EFI_ suffix would result in
PCI_ROOT_BRIDGE_DEVICE_PATH, where PCI_ could incorrectly suggest a
relation with the PCI standards or the PCI-related generic edk2 code.
Cc: Jordan Justen <jordan.l.justen@intel.com>
Cc: Ruiyu Ni <ruiyu.ni@intel.com>
Cc: Marcel Apfelbaum <marcel@redhat.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
Diffstat (limited to 'OvmfPkg/Library/PciHostBridgeLib')
| -rw-r--r-- | OvmfPkg/Library/PciHostBridgeLib/PciHostBridgeLib.c | 53 | ||||
| -rw-r--r-- | OvmfPkg/Library/PciHostBridgeLib/PciHostBridgeLib.inf | 1 |
2 files changed, 53 insertions, 1 deletions
diff --git a/OvmfPkg/Library/PciHostBridgeLib/PciHostBridgeLib.c b/OvmfPkg/Library/PciHostBridgeLib/PciHostBridgeLib.c index cc782c1cc3..582e87dd9a 100644 --- a/OvmfPkg/Library/PciHostBridgeLib/PciHostBridgeLib.c +++ b/OvmfPkg/Library/PciHostBridgeLib/PciHostBridgeLib.c @@ -22,18 +22,54 @@ #include <Library/BaseMemoryLib.h>
#include <Library/DebugLib.h>
+#include <Library/DevicePathLib.h>
#include <Library/MemoryAllocationLib.h>
#include <Library/PciHostBridgeLib.h>
#include <Library/PciLib.h>
#include <Library/QemuFwCfgLib.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 *mPciHostBridgeLibAcpiAddressSpaceTypeStr[] = {
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
+ }
+ }
+};
+
+
/**
Initialize a PCI_ROOT_BRIDGE structure.
@@ -67,6 +103,8 @@ InitRootBridge ( OUT PCI_ROOT_BRIDGE *RootBus
)
{
+ OVMF_PCI_ROOT_BRIDGE_DEVICE_PATH *DevicePath;
+
//
// Be safe if other fields are added to PCI_ROOT_BRIDGE later.
//
@@ -103,7 +141,19 @@ InitRootBridge ( RootBus->NoExtendedConfigSpace = TRUE;
- return EFI_OUT_OF_RESOURCES;
+ DevicePath = AllocateCopyPool (sizeof mRootBridgeDevicePathTemplate,
+ &mRootBridgeDevicePathTemplate);
+ if (DevicePath == NULL) {
+ DEBUG ((EFI_D_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 ((EFI_D_INFO,
+ "%a: populated root bus %d, with room for %d subordinate bus(es)\n",
+ __FUNCTION__, RootBusNumber, MaxSubBusNumber - RootBusNumber));
+ return EFI_SUCCESS;
}
@@ -120,6 +170,7 @@ UninitRootBridge ( IN PCI_ROOT_BRIDGE *RootBus
)
{
+ FreePool (RootBus->DevicePath);
}
diff --git a/OvmfPkg/Library/PciHostBridgeLib/PciHostBridgeLib.inf b/OvmfPkg/Library/PciHostBridgeLib/PciHostBridgeLib.inf index e95ebfdc93..5467fff8aa 100644 --- a/OvmfPkg/Library/PciHostBridgeLib/PciHostBridgeLib.inf +++ b/OvmfPkg/Library/PciHostBridgeLib/PciHostBridgeLib.inf @@ -41,6 +41,7 @@ [LibraryClasses]
BaseMemoryLib
DebugLib
+ DevicePathLib
MemoryAllocationLib
PciLib
QemuFwCfgLib
|