rfnoc: Create mock factory

This is an API that allows creating mock block controllers, to write
unit tests for block controllers. See rfnoc_blocks_test for an example
how to use them.

3 files changed, 58 insertions, 3 deletions

diff --git a/host/lib/rfnoc/CMakeLists.txt b/host/lib/rfnoc/CMakeLists.txt
index e685cef26..ea774b2c8 100644
--- a/host/lib/rfnoc/CMakeLists.txt
+++ b/host/lib/rfnoc/CMakeLists.txt
@@ -38,6 +38,7 @@ LIBUHD_APPEND_SOURCES(
     ${CMAKE_CURRENT_SOURCE_DIR}/rfnoc_rx_streamer.cpp
     ${CMAKE_CURRENT_SOURCE_DIR}/rfnoc_tx_streamer.cpp
     ${CMAKE_CURRENT_SOURCE_DIR}/tx_async_msg_queue.cpp
+    ${CMAKE_CURRENT_SOURCE_DIR}/mock_block.cpp
     # Default block control classes:
     ${CMAKE_CURRENT_SOURCE_DIR}/block_control.cpp
     ${CMAKE_CURRENT_SOURCE_DIR}/ddc_block_control.cpp
diff --git a/host/lib/rfnoc/mock_block.cpp b/host/lib/rfnoc/mock_block.cpp
new file mode 100644
index 000000000..867311097
--- /dev/null
+++ b/host/lib/rfnoc/mock_block.cpp
@@ -0,0 +1,52 @@
+//
+// Copyright 2019 Ettus Research, a National Instruments Brand
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+//
+
+#include <uhd/property_tree.hpp>
+#include <uhd/rfnoc/defaults.hpp>
+#include <uhd/rfnoc/mock_block.hpp>
+#include <uhd/types/device_addr.hpp>
+#include <uhdlib/rfnoc/clock_iface.hpp>
+#include <uhdlib/rfnoc/factory.hpp>
+
+using namespace uhd::rfnoc;
+
+uhd::rfnoc::mock_block_container uhd::rfnoc::get_mock_block(const noc_id_t noc_id,
+    const size_t num_inputs,
+    const size_t num_outputs,
+    const device_addr_t& args,
+    const size_t mtu,
+    const device_type_t device_id)
+{
+    block_factory_info_t fac_info = factory::get_block_factory(noc_id, device_id);
+
+    mock_block_container ret_val;
+    ret_val.factory   = fac_info.factory_fn;
+    ret_val.reg_iface = std::make_shared<mock_reg_iface_t>();
+    ret_val.tree      = uhd::property_tree::make();
+    // Create make args
+    ret_val.make_args                   = std::make_unique<noc_block_base::make_args_t>();
+    ret_val.make_args->noc_id           = noc_id;
+    ret_val.make_args->block_id         = block_id_t(fac_info.block_name);
+    ret_val.make_args->num_input_ports  = num_inputs;
+    ret_val.make_args->num_output_ports = num_outputs;
+    ret_val.make_args->mtu              = mtu;
+    ret_val.make_args->reg_iface        = ret_val.reg_iface;
+    ret_val.make_args->tree             = ret_val.tree;
+    ret_val.make_args->args             = args;
+    ret_val.make_args->tb_clk_iface =
+        std::make_shared<clock_iface>(fac_info.timebase_clk);
+    ret_val.make_args->ctrlport_clk_iface =
+        std::make_shared<clock_iface>(fac_info.ctrlport_clk);
+    // TODO Make a mock mb controller too
+    ret_val.make_args->mb_control = nullptr;
+    if (fac_info.mb_access) {
+        UHD_LOG_WARNING("MOCK", "Mock block controllers cannot have mb_controllers.");
+    }
+
+    // Make block and return
+    return ret_val;
+}
+
diff --git a/host/lib/rfnoc/registry_factory.cpp b/host/lib/rfnoc/registry_factory.cpp
index bf1bc60a5..b251410bf 100644
--- a/host/lib/rfnoc/registry_factory.cpp
+++ b/host/lib/rfnoc/registry_factory.cpp
@@ -5,13 +5,14 @@
 //
 
 #include <uhd/exception.hpp>
-#include <uhd/rfnoc/registry.hpp>
-#include <uhd/rfnoc/defaults.hpp>
 #include <uhd/rfnoc/constants.hpp>
+#include <uhd/rfnoc/defaults.hpp>
+#include <uhd/rfnoc/mock_block.hpp>
+#include <uhd/rfnoc/registry.hpp>
 #include <uhd/utils/static.hpp>
 #include <uhdlib/rfnoc/factory.hpp>
-#include <boost/functional/hash.hpp>
 #include <unordered_map>
+#include <boost/functional/hash.hpp>
 #include <iomanip>
 #include <iostream>
 #include <sstream>
@@ -106,3 +107,4 @@ block_factory_info_t factory::get_block_factory(noc_id_t noc_id, device_type_t d
     }
     return get_direct_block_registry().at(key);
 }
+