rfnoc: Port FFT controller

rfnoc used noc-script for FFT controller implementation. Because
erfnoc does not support noc-script yet, the implementation is done
as a rfnoc controller.

3 files changed, 109 insertions, 0 deletions

diff --git a/host/include/uhd/rfnoc/CMakeLists.txt b/host/include/uhd/rfnoc/CMakeLists.txt
index 9abacbeaa..bb3cc0190 100644
--- a/host/include/uhd/rfnoc/CMakeLists.txt
+++ b/host/include/uhd/rfnoc/CMakeLists.txt
@@ -34,6 +34,7 @@ UHD_INSTALL(FILES
     ddc_block_control.hpp
     duc_block_control.hpp
     dmafifo_block_control.hpp
+    fft_block_control.hpp
     null_block_control.hpp
     radio_control.hpp
 
diff --git a/host/include/uhd/rfnoc/blocks/fft_1x64.yml b/host/include/uhd/rfnoc/blocks/fft_1x64.yml
new file mode 100644
index 000000000..ac2155381
--- /dev/null
+++ b/host/include/uhd/rfnoc/blocks/fft_1x64.yml
@@ -0,0 +1,56 @@
+schema: rfnoc_modtool_args
+module_name: fft
+version: 1.0
+rfnoc_version: 1.0
+chdr_width: 64
+noc_id: 0xFF700000
+
+clocks:
+  - name: rfnoc_chdr
+    freq: "[]"
+  - name: rfnoc_ctrl
+    freq: "[]"
+  - name: fft
+    freq: "[]"
+
+control:
+  sw_iface: nocscript
+  fpga_iface: ctrlport
+  interface_direction: master_slave
+  fifo_depth: 32
+  clk_domain: fft
+  ctrlport:
+    byte_mode: True
+    timed: False
+    has_status: False
+
+# parameters:
+
+data:
+  fpga_iface: axis_chdr
+  clk_domain: fft
+  mtu: 1024
+  inputs:
+    port0:
+      index: 0
+      item_width: 32
+      nipc: 2
+      context_fifo_depth: 1
+      payload_fifo_depth: 1
+      format: int32
+      mdata_sig: ~
+  outputs:
+    port0:
+      index: 0
+      item_width: 32
+      nipc: 2
+      context_fifo_depth: 1
+      payload_fifo_depth: 1
+      format: int32
+      mdata_sig: ~
+
+io_port:
+
+registers:
+
+properties:
diff --git a/host/include/uhd/rfnoc/fft_block_control.hpp b/host/include/uhd/rfnoc/fft_block_control.hpp
new file mode 100644
index 000000000..c865dce78
--- /dev/null
+++ b/host/include/uhd/rfnoc/fft_block_control.hpp
@@ -0,0 +1,52 @@
+//
+// Copyright 2019 Ettus Research, a National Instruments Brand
+//
+// SPDX-License-Identifier: GPL-3.0-or-later
+//
+
+#ifndef INCLUDED_LIBUHD_FFT_BLOCK_CONTROL_HPP
+#define INCLUDED_LIBUHD_FFT_BLOCK_CONTROL_HPP
+
+#include <uhd/config.hpp>
+#include <uhd/rfnoc/noc_block_base.hpp>
+
+namespace uhd { namespace rfnoc {
+
+enum class fft_shift { NORMAL, REVERSE, NATURAL };
+enum class fft_direction { REVERSE, FORWARD };
+enum class fft_magnitude { COMPLEX, MAGNITUDE, MAGNITUDE_SQUARED };
+
+// Custom property keys
+static const std::string PROP_KEY_MAGNITUDE   = "magnitude";
+static const std::string PROP_KEY_DIRECTION   = "direction";
+static const std::string PROP_KEY_FFT_LEN     = "fft_len";
+static const std::string PROP_KEY_FFT_SCALING = "fft_scaling";
+static const std::string PROP_KEY_FFT_SHIFT   = "fft_shift";
+
+/*! FFT Block Control Class
+ */
+class UHD_API fft_block_control : public noc_block_base
+{
+public:
+    RFNOC_DECLARE_BLOCK(fft_block_control)
+
+    // Readback addresses
+    static const uint32_t RB_FFT_RESET;
+    static const uint32_t RB_MAGNITUDE_OUT;
+    static const uint32_t RB_FFT_SIZE_LOG2;
+    static const uint32_t RB_FFT_DIRECTION;
+    static const uint32_t RB_FFT_SCALING;
+    static const uint32_t RB_FFT_SHIFT_CONFIG;
+    // Write addresses
+    static const uint32_t SR_FFT_RESET;
+    static const uint32_t SR_FFT_SIZE_LOG2;
+    static const uint32_t SR_MAGNITUDE_OUT;
+    static const uint32_t SR_FFT_DIRECTION;
+    static const uint32_t SR_FFT_SCALING;
+    static const uint32_t SR_FFT_SHIFT_CONFIG;
+
+};
+
+}} // namespace uhd::rfnoc
+
+#endif /* INCLUDED_LIBUHD_FFT_BLOCK_CONTROL_HPP */