Inband MMIO access to OCMB (skeleton)

This is a skeleton version of the new MMIO device driver that
will give access to the OCMB.  It is being pushed to allow related
development to progress.

Change-Id: Iefec0677e63db6af29d81389c630584ba9dff16c
RTC: 189447
Reviewed-on: http://rchgit01.rchland.ibm.com/gerrit1/68489
Tested-by: Jenkins Server <pfd-jenkins+hostboot@us.ibm.com>
Reviewed-by: Matt Derksen <mderkse1@us.ibm.com>
Reviewed-by: Christian R. Geddes <crgeddes@us.ibm.com>
Tested-by: FSP CI Jenkins <fsp-CI-jenkins+hostboot@us.ibm.com>
Tested-by: Jenkins OP Build CI <op-jenkins+hostboot@us.ibm.com>
Reviewed-by: Daniel M. Crowell <dcrowell@us.ibm.com>

1 files changed, 61 insertions, 0 deletions

diff --git a/src/usr/mmio/mmio.C b/src/usr/mmio/mmio.C
new file mode 100644
index 000000000..2b0849aa5
--- /dev/null
+++ b/src/usr/mmio/mmio.C
@@ -0,0 +1,61 @@
+/* IBM_PROLOG_BEGIN_TAG                                                   */
+/* This is an automatically generated prolog.                             */
+/*                                                                        */
+/* $Source: src/usr/mmio/mmio.C $                                         */
+/*                                                                        */
+/* OpenPOWER HostBoot Project                                             */
+/*                                                                        */
+/* Contributors Listed Below - COPYRIGHT 2018                             */
+/* [+] International Business Machines Corp.                              */
+/*                                                                        */
+/*                                                                        */
+/* Licensed under the Apache License, Version 2.0 (the "License");        */
+/* you may not use this file except in compliance with the License.       */
+/* You may obtain a copy of the License at                                */
+/*                                                                        */
+/*     http://www.apache.org/licenses/LICENSE-2.0                         */
+/*                                                                        */
+/* Unless required by applicable law or agreed to in writing, software    */
+/* distributed under the License is distributed on an "AS IS" BASIS,      */
+/* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or        */
+/* implied. See the License for the specific language governing           */
+/* permissions and limitations under the License.                         */
+/*                                                                        */
+/* IBM_PROLOG_END_TAG                                                     */
+#include <sys/mmio.h>
+#include <devicefw/driverif.H>
+#include <errl/errlentry.H>
+#include <errl/errlmanager.H>
+#include <targeting/common/predicates/predicates.H>
+#include <targeting/common/utilFilter.H>
+#include <targeting/common/targetservice.H>
+#include <arch/ppc.H>
+
+#include <mmio/mmio.H>
+
+namespace MMIO
+{
+
+void mmioSetup()
+{
+}
+
+// Direct OCMB reads and writes to the device's memory mapped memory.
+DEVICE_REGISTER_ROUTE(DeviceFW::WILDCARD,
+                      DeviceFW::MMIO,
+                      TARGETING::TYPE_OCMB_CHIP,
+                      mmioPerformOp);
+
+errlHndl_t mmioPerformOp(DeviceFW::OperationType i_opType,
+                         TARGETING::TargetHandle_t i_target,
+                         void* io_buffer,
+                         size_t& io_buflen,
+                         int64_t i_accessType,
+                         va_list i_args)
+{
+    errlHndl_t l_err         = nullptr;
+
+    return l_err;
+}
+
+}; // end namespace MMIO