From cd03692e92c0f44fbd45875a8782dd6febee0f68 Mon Sep 17 00:00:00 2001
From: Martin Braun <martin.braun@ettus.com>
Date: Thu, 1 Jun 2017 00:04:24 -0700
Subject: mpmd: Refactored code to allow multi-device initialization

---
 host/lib/usrp/mpmd/mpmd_mboard_impl.cpp | 111 ++++++++++++++++++++++++++++++++
 1 file changed, 111 insertions(+)
 create mode 100644 host/lib/usrp/mpmd/mpmd_mboard_impl.cpp

(limited to 'host/lib/usrp/mpmd/mpmd_mboard_impl.cpp')

diff --git a/host/lib/usrp/mpmd/mpmd_mboard_impl.cpp b/host/lib/usrp/mpmd/mpmd_mboard_impl.cpp
new file mode 100644
index 000000000..46e8d23a9
--- /dev/null
+++ b/host/lib/usrp/mpmd/mpmd_mboard_impl.cpp
@@ -0,0 +1,111 @@
+//
+// Copyright 2017 Ettus Research (National Instruments)
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+//
+
+#include "mpmd_impl.hpp"
+#include <chrono>
+#include <thread>
+
+namespace {
+    const size_t MPMD_RECLAIM_INTERVAL_MS = 1000;
+}
+
+using namespace uhd;
+
+/*****************************************************************************
+ * Structors
+ ****************************************************************************/
+mpmd_mboard_impl::mpmd_mboard_impl(const std::string& ip_addr)
+    : rpc(uhd::rpc_client::make(ip_addr, MPM_RPC_PORT))
+{
+    UHD_LOG_TRACE("MPMD", "Initializing mboard, IP address: " << ip_addr);
+    auto _dev_info = rpc->call<dev_info>("get_device_info");
+    device_info =
+        dict<std::string, std::string>(_dev_info.begin(), _dev_info.end());
+    // Get initial claim on mboard
+    auto rpc_token = rpc->call<std::string>("claim", "UHD - Session 01"); // TODO make this configurable with device_addr, and provide better defaults
+    if (rpc_token.empty()) {
+        throw uhd::value_error("mpmd device claiming failed!");
+    }
+    rpc->set_token(rpc_token);
+    _claimer_task = task::make([this] {
+        if (not this->claim()) {
+            throw uhd::value_error("mpmd device reclaiming loop failed!");
+        };
+        std::this_thread::sleep_for(
+            std::chrono::milliseconds(MPMD_RECLAIM_INTERVAL_MS)
+        );
+    });
+
+    // std::vector<std::string> data_ifaces =
+    //     rpc.call<std::vector<std::string>>("get_interfaces", rpc_token);
+
+    // discover path to device and tell MPM our MAC address seen at the data
+    // interfaces
+    // move this into make_transport
+    //for (const auto& iface : data_ifaces) {
+        //std::vector<std::string> addrs = rpc.call<std::vector<std::string>>(
+            //"get_interface_addrs", _rpc_token, iface);
+        //for (const auto& iface_addr : addrs) {
+            //if (rpc_client(iface_addr, MPM_RPC_PORT)
+                    //.call<bool>("probe_interface", _rpc_token)) {
+                //data_interfaces.emplace(iface, iface_addr);
+                //break;
+            //}
+        //}
+    //}
+}
+
+mpmd_mboard_impl::~mpmd_mboard_impl()
+{
+    /* nop */
+}
+
+/*****************************************************************************
+ * API
+ ****************************************************************************/
+uhd::sid_t mpmd_mboard_impl::allocate_sid(const uint16_t port,
+                                          const uhd::sid_t address,
+                                          const uint32_t xbar_src_addr,
+                                          const uint32_t xbar_src_port)
+{
+    const auto sid = rpc->call_with_token<uint32_t>(
+        "allocate_sid",
+        port, address.get(), xbar_src_addr, xbar_src_port
+    );
+    return uhd::sid_t(sid);
+}
+
+
+/*****************************************************************************
+ * Private methods
+ ****************************************************************************/
+bool mpmd_mboard_impl::claim()
+{
+    return rpc->call_with_token<bool>("reclaim");
+}
+
+/*****************************************************************************
+ * Factory
+ ****************************************************************************/
+mpmd_mboard_impl::uptr mpmd_mboard_impl::make(const std::string& addr)
+{
+    mpmd_mboard_impl::uptr mb =
+        mpmd_mboard_impl::uptr(new mpmd_mboard_impl(addr));
+    // implicit move
+    return mb;
+}
+
-- 
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