ArmVirtPkg/VirtFdtDxe: remove Xenio handling and rename to VirtioFdtDxe

Now that we have moved the handling of the xen,xen DT node to XenioFdtDxe,
remove its handling from VirtFdtDxe. Since the only functionality that
remains is handling the virtio,mmio DT node, rename VirtFdtDxe to
VirtioFdtDxe to reflect that. Also update the platforms that use this
driver.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>

2 files changed, 175 insertions, 0 deletions

diff --git a/ArmVirtPkg/VirtioFdtDxe/VirtioFdtDxe.c b/ArmVirtPkg/VirtioFdtDxe/VirtioFdtDxe.c
new file mode 100644
index 0000000000..c937881aab
--- /dev/null
+++ b/ArmVirtPkg/VirtioFdtDxe/VirtioFdtDxe.c
@@ -0,0 +1,124 @@
+/** @file

+*  Virtio FDT client protocol driver for virtio,mmio DT node

+*

+*  Copyright (c) 2014 - 2016, Linaro Ltd. All rights reserved.<BR>

+*

+*  This program and the accompanying materials are

+*  licensed and made available under the terms and conditions of the BSD License

+*  which accompanies this distribution.  The full text of the license may be found at

+*  http://opensource.org/licenses/bsd-license.php

+*

+*  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,

+*  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.

+*

+**/

+

+#include <Library/BaseLib.h>

+#include <Library/BaseMemoryLib.h>

+#include <Library/DebugLib.h>

+#include <Library/DevicePathLib.h>

+#include <Library/MemoryAllocationLib.h>

+#include <Library/UefiBootServicesTableLib.h>

+#include <Library/UefiDriverEntryPoint.h>

+#include <Library/VirtioMmioDeviceLib.h>

+

+#include <Guid/VirtioMmioTransport.h>

+

+#include <Protocol/FdtClient.h>

+

+#pragma pack (1)

+typedef struct {

+  VENDOR_DEVICE_PATH                  Vendor;

+  UINT64                              PhysBase;

+  EFI_DEVICE_PATH_PROTOCOL            End;

+} VIRTIO_TRANSPORT_DEVICE_PATH;

+#pragma pack ()

+

+EFI_STATUS

+EFIAPI

+InitializeVirtioFdtDxe (

+  IN EFI_HANDLE           ImageHandle,

+  IN EFI_SYSTEM_TABLE     *SystemTable

+  )

+{

+  EFI_STATUS                     Status, FindNodeStatus;

+  FDT_CLIENT_PROTOCOL            *FdtClient;

+  INT32                          Node;

+  CONST UINT64                   *Reg;

+  UINT32                         RegSize;

+  VIRTIO_TRANSPORT_DEVICE_PATH   *DevicePath;

+  EFI_HANDLE                     Handle;

+  UINT64                         RegBase;

+

+  Status = gBS->LocateProtocol (&gFdtClientProtocolGuid, NULL,

+                  (VOID **)&FdtClient);

+  ASSERT_EFI_ERROR (Status);

+

+  for (FindNodeStatus = FdtClient->FindCompatibleNode (FdtClient,

+                                     "virtio,mmio", &Node);

+       !EFI_ERROR (FindNodeStatus);

+       FindNodeStatus = FdtClient->FindNextCompatibleNode (FdtClient,

+                                     "virtio,mmio", Node, &Node)) {

+

+    Status = FdtClient->GetNodeProperty (FdtClient, Node, "reg",

+                          (CONST VOID **)&Reg, &RegSize);

+    if (EFI_ERROR (Status)) {

+      DEBUG ((EFI_D_ERROR, "%a: GetNodeProperty () failed (Status == %r)\n",

+        __FUNCTION__, Status));

+      continue;

+    }

+

+    ASSERT (RegSize == 16);

+

+    //

+    // Create a unique device path for this transport on the fly

+    //

+    RegBase = SwapBytes64 (*Reg);

+    DevicePath = (VIRTIO_TRANSPORT_DEVICE_PATH *)CreateDeviceNode (

+                                  HARDWARE_DEVICE_PATH,

+                                  HW_VENDOR_DP,

+                                  sizeof (VIRTIO_TRANSPORT_DEVICE_PATH));

+    if (DevicePath == NULL) {

+      DEBUG ((EFI_D_ERROR, "%a: Out of memory\n", __FUNCTION__));

+      continue;

+    }

+

+    CopyGuid (&DevicePath->Vendor.Guid, &gVirtioMmioTransportGuid);

+    DevicePath->PhysBase = RegBase;

+    SetDevicePathNodeLength (&DevicePath->Vendor,

+      sizeof (*DevicePath) - sizeof (DevicePath->End));

+    SetDevicePathEndNode (&DevicePath->End);

+

+    Handle = NULL;

+    Status = gBS->InstallProtocolInterface (&Handle,

+                     &gEfiDevicePathProtocolGuid, EFI_NATIVE_INTERFACE,

+                     DevicePath);

+    if (EFI_ERROR (Status)) {

+      DEBUG ((EFI_D_ERROR, "%a: Failed to install the EFI_DEVICE_PATH "

+        "protocol on a new handle (Status == %r)\n",

+        __FUNCTION__, Status));

+      FreePool (DevicePath);

+      continue;

+    }

+

+    Status = VirtioMmioInstallDevice (RegBase, Handle);

+    if (EFI_ERROR (Status)) {

+      DEBUG ((EFI_D_ERROR, "%a: Failed to install VirtIO transport @ 0x%Lx "

+        "on handle %p (Status == %r)\n", __FUNCTION__, RegBase,

+        Handle, Status));

+

+      Status = gBS->UninstallProtocolInterface (Handle,

+                      &gEfiDevicePathProtocolGuid, DevicePath);

+      ASSERT_EFI_ERROR (Status);

+      FreePool (DevicePath);

+      continue;

+    }

+  }

+

+  if (EFI_ERROR (FindNodeStatus) && FindNodeStatus != EFI_NOT_FOUND) {

+     DEBUG ((EFI_D_ERROR, "%a: Error occurred while iterating DT nodes "

+       "(FindNodeStatus == %r)\n", __FUNCTION__, FindNodeStatus));

+  }

+

+  return EFI_SUCCESS;

+}

diff --git a/ArmVirtPkg/VirtioFdtDxe/VirtioFdtDxe.inf b/ArmVirtPkg/VirtioFdtDxe/VirtioFdtDxe.inf
new file mode 100644
index 0000000000..0fa32e5562
--- /dev/null
+++ b/ArmVirtPkg/VirtioFdtDxe/VirtioFdtDxe.inf
@@ -0,0 +1,51 @@
+## @file

+#  Virtio FDT client protocol driver for virtio,mmio DT node

+#

+#  Copyright (c) 2014 - 2016, Linaro Ltd. All rights reserved.<BR>

+#

+#  This program and the accompanying materials are

+#  licensed and made available under the terms and conditions of the BSD License

+#  which accompanies this distribution.  The full text of the license may be found at

+#  http://opensource.org/licenses/bsd-license.php

+#

+#  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,

+#  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.

+#

+##

+

+[Defines]

+  INF_VERSION                    = 0x00010005

+  BASE_NAME                      = VirtioFdtDxe

+  FILE_GUID                      = 0049858F-8CA7-4CCD-918B-D952CBF32975

+  MODULE_TYPE                    = DXE_DRIVER

+  VERSION_STRING                 = 1.0

+

+  ENTRY_POINT                    = InitializeVirtioFdtDxe

+

+[Sources]

+  VirtioFdtDxe.c

+

+[Packages]

+  ArmVirtPkg/ArmVirtPkg.dec

+  MdePkg/MdePkg.dec

+  OvmfPkg/OvmfPkg.dec

+

+[LibraryClasses]

+  BaseLib

+  BaseMemoryLib

+  DebugLib

+  DevicePathLib

+  MemoryAllocationLib

+  UefiBootServicesTableLib

+  UefiDriverEntryPoint

+  VirtioMmioDeviceLib

+

+[Guids]

+  gVirtioMmioTransportGuid

+

+[Protocols]

+  gEfiDevicePathProtocolGuid                            ## PRODUCES

+  gFdtClientProtocolGuid                                ## CONSUMES

+

+[Depex]

+  gFdtClientProtocolGuid