diff options
Diffstat (limited to 'fpga/usrp3/lib/rfnoc')
8 files changed, 1454 insertions, 0 deletions
diff --git a/fpga/usrp3/lib/rfnoc/blocks/rfnoc_block_window/Makefile b/fpga/usrp3/lib/rfnoc/blocks/rfnoc_block_window/Makefile new file mode 100644 index 000000000..f05034702 --- /dev/null +++ b/fpga/usrp3/lib/rfnoc/blocks/rfnoc_block_window/Makefile @@ -0,0 +1,45 @@ +# +# Copyright 2020 Ettus Research, a National Instruments Brand +# +# SPDX-License-Identifier: LGPL-3.0-or-later +# + +#------------------------------------------------- +# Top-of-Makefile +#------------------------------------------------- +# Define BASE_DIR to point to the "top" dir. Note: +# UHD_FPGA_DIR must be passed into this Makefile. +BASE_DIR = ../../../../top +# Include viv_sim_preample after defining BASE_DIR +include $(BASE_DIR)/../tools/make/viv_sim_preamble.mak + +#------------------------------------------------- +# Design Specific +#------------------------------------------------- +# Include makefiles and sources for the DUT and its +# dependencies. +include $(BASE_DIR)/../lib/rfnoc/core/Makefile.srcs +include $(BASE_DIR)/../lib/rfnoc/utils/Makefile.srcs +include Makefile.srcs + +DESIGN_SRCS += $(abspath \ +$(RFNOC_CORE_SRCS) \ +$(RFNOC_UTIL_SRCS) \ +$(RFNOC_OOT_SRCS) \ +) + +#------------------------------------------------- +# Testbench Specific +#------------------------------------------------- +SIM_TOP = rfnoc_block_window_tb glbl +SIM_SRCS = \ +$(abspath rfnoc_block_window_tb.sv) \ +$(VIVADO_PATH)/data/verilog/src/glbl.v \ + +#------------------------------------------------- +# Bottom-of-Makefile +#------------------------------------------------- +# Include all simulator specific makefiles here +# Each should define a unique target to simulate +# e.g. xsim, vsim, etc and a common "clean" target +include $(BASE_DIR)/../tools/make/viv_simulator.mak diff --git a/fpga/usrp3/lib/rfnoc/blocks/rfnoc_block_window/Makefile.srcs b/fpga/usrp3/lib/rfnoc/blocks/rfnoc_block_window/Makefile.srcs new file mode 100644 index 000000000..6c71a7562 --- /dev/null +++ b/fpga/usrp3/lib/rfnoc/blocks/rfnoc_block_window/Makefile.srcs @@ -0,0 +1,25 @@ +# +# Copyright 2020 Ettus Research, a National Instruments Brand +# +# SPDX-License-Identifier: LGPL-3.0-or-later +# + +################################################## +# RFNoC Block Sources +################################################## +# Here, list all the files that are necessary to synthesize this block. Don't +# include testbenches! +# Make sure that the source files are nicely detectable by a regex. Best to put +# one on each line. +# The first argument to addprefix is the current path to this Makefile, so the +# path list is always absolute, regardless of from where we're including or +# calling this file. RFNOC_OOT_SRCS needs to be a simply expanded variable +# (not a recursively expanded variable), and we take care of that in the build +# infrastructure. +RFNOC_OOT_SRCS += $(addprefix $(dir $(abspath $(lastword $(MAKEFILE_LIST)))), \ +noc_shell_window.v \ +window.v \ +rfnoc_block_window_regs.vh \ +rfnoc_window_core.v \ +rfnoc_block_window.v \ +) diff --git a/fpga/usrp3/lib/rfnoc/blocks/rfnoc_block_window/noc_shell_window.v b/fpga/usrp3/lib/rfnoc/blocks/rfnoc_block_window/noc_shell_window.v new file mode 100644 index 000000000..24d37020d --- /dev/null +++ b/fpga/usrp3/lib/rfnoc/blocks/rfnoc_block_window/noc_shell_window.v @@ -0,0 +1,309 @@ +// +// Copyright 2020 Ettus Research, a National Instruments Brand +// +// SPDX-License-Identifier: LGPL-3.0-or-later +// +// Module: noc_shell_window +// +// Description: +// +// This is a tool-generated NoC-shell for the window block. +// See the RFNoC specification for more information about NoC shells. +// +// Parameters: +// +// THIS_PORTID : Control crossbar port to which this block is connected +// CHDR_W : AXIS-CHDR data bus width +// MTU : Maximum transmission unit (i.e., maximum packet size in +// NUM_PORTS : Number of window module instances to connect +// + +`default_nettype none + + +module noc_shell_window #( + parameter [9:0] THIS_PORTID = 10'd0, + parameter CHDR_W = 64, + parameter [5:0] MTU = 10, + parameter NUM_PORTS = 1 +) ( + //--------------------- + // Framework Interface + //--------------------- + + // RFNoC Framework Clocks + input wire rfnoc_chdr_clk, + input wire rfnoc_ctrl_clk, + input wire ce_clk, + + // NoC Shell Generated Resets + output wire rfnoc_chdr_rst, + output wire rfnoc_ctrl_rst, + output wire ce_rst, + + // RFNoC Backend Interface + input wire [511:0] rfnoc_core_config, + output wire [511:0] rfnoc_core_status, + + // AXIS-CHDR Input Ports (from framework) + input wire [(0+NUM_PORTS)*CHDR_W-1:0] s_rfnoc_chdr_tdata, + input wire [(0+NUM_PORTS)-1:0] s_rfnoc_chdr_tlast, + input wire [(0+NUM_PORTS)-1:0] s_rfnoc_chdr_tvalid, + output wire [(0+NUM_PORTS)-1:0] s_rfnoc_chdr_tready, + // AXIS-CHDR Output Ports (to framework) + output wire [(0+NUM_PORTS)*CHDR_W-1:0] m_rfnoc_chdr_tdata, + output wire [(0+NUM_PORTS)-1:0] m_rfnoc_chdr_tlast, + output wire [(0+NUM_PORTS)-1:0] m_rfnoc_chdr_tvalid, + input wire [(0+NUM_PORTS)-1:0] m_rfnoc_chdr_tready, + + // AXIS-Ctrl Control Input Port (from framework) + input wire [31:0] s_rfnoc_ctrl_tdata, + input wire s_rfnoc_ctrl_tlast, + input wire s_rfnoc_ctrl_tvalid, + output wire s_rfnoc_ctrl_tready, + // AXIS-Ctrl Control Output Port (to framework) + output wire [31:0] m_rfnoc_ctrl_tdata, + output wire m_rfnoc_ctrl_tlast, + output wire m_rfnoc_ctrl_tvalid, + input wire m_rfnoc_ctrl_tready, + + //--------------------- + // Client Interface + //--------------------- + + // CtrlPort Clock and Reset + output wire ctrlport_clk, + output wire ctrlport_rst, + // CtrlPort Master + output wire m_ctrlport_req_wr, + output wire m_ctrlport_req_rd, + output wire [19:0] m_ctrlport_req_addr, + output wire [31:0] m_ctrlport_req_data, + input wire m_ctrlport_resp_ack, + input wire [31:0] m_ctrlport_resp_data, + + // AXI-Stream Payload Context Clock and Reset + output wire axis_data_clk, + output wire axis_data_rst, + // Payload Stream to User Logic: in + output wire [NUM_PORTS*32*1-1:0] m_in_payload_tdata, + output wire [NUM_PORTS*1-1:0] m_in_payload_tkeep, + output wire [NUM_PORTS-1:0] m_in_payload_tlast, + output wire [NUM_PORTS-1:0] m_in_payload_tvalid, + input wire [NUM_PORTS-1:0] m_in_payload_tready, + // Context Stream to User Logic: in + output wire [NUM_PORTS*CHDR_W-1:0] m_in_context_tdata, + output wire [NUM_PORTS*4-1:0] m_in_context_tuser, + output wire [NUM_PORTS-1:0] m_in_context_tlast, + output wire [NUM_PORTS-1:0] m_in_context_tvalid, + input wire [NUM_PORTS-1:0] m_in_context_tready, + // Payload Stream to User Logic: out + input wire [NUM_PORTS*32*1-1:0] s_out_payload_tdata, + input wire [NUM_PORTS*1-1:0] s_out_payload_tkeep, + input wire [NUM_PORTS-1:0] s_out_payload_tlast, + input wire [NUM_PORTS-1:0] s_out_payload_tvalid, + output wire [NUM_PORTS-1:0] s_out_payload_tready, + // Context Stream to User Logic: out + input wire [NUM_PORTS*CHDR_W-1:0] s_out_context_tdata, + input wire [NUM_PORTS*4-1:0] s_out_context_tuser, + input wire [NUM_PORTS-1:0] s_out_context_tlast, + input wire [NUM_PORTS-1:0] s_out_context_tvalid, + output wire [NUM_PORTS-1:0] s_out_context_tready +); + + //--------------------------------------------------------------------------- + // Backend Interface + //--------------------------------------------------------------------------- + + wire data_i_flush_en; + wire [31:0] data_i_flush_timeout; + wire [63:0] data_i_flush_active; + wire [63:0] data_i_flush_done; + wire data_o_flush_en; + wire [31:0] data_o_flush_timeout; + wire [63:0] data_o_flush_active; + wire [63:0] data_o_flush_done; + + backend_iface #( + .NOC_ID (32'hD0530000), + .NUM_DATA_I (0+NUM_PORTS), + .NUM_DATA_O (0+NUM_PORTS), + .CTRL_FIFOSIZE ($clog2(32)), + .MTU (MTU) + ) backend_iface_i ( + .rfnoc_chdr_clk (rfnoc_chdr_clk), + .rfnoc_chdr_rst (rfnoc_chdr_rst), + .rfnoc_ctrl_clk (rfnoc_ctrl_clk), + .rfnoc_ctrl_rst (rfnoc_ctrl_rst), + .rfnoc_core_config (rfnoc_core_config), + .rfnoc_core_status (rfnoc_core_status), + .data_i_flush_en (data_i_flush_en), + .data_i_flush_timeout (data_i_flush_timeout), + .data_i_flush_active (data_i_flush_active), + .data_i_flush_done (data_i_flush_done), + .data_o_flush_en (data_o_flush_en), + .data_o_flush_timeout (data_o_flush_timeout), + .data_o_flush_active (data_o_flush_active), + .data_o_flush_done (data_o_flush_done) + ); + + //--------------------------------------------------------------------------- + // Reset Generation + //--------------------------------------------------------------------------- + + wire ce_rst_pulse; + + pulse_synchronizer #(.MODE ("POSEDGE")) pulse_synchronizer_ce ( + .clk_a(rfnoc_chdr_clk), .rst_a(1'b0), .pulse_a (rfnoc_chdr_rst), .busy_a (), + .clk_b(ce_clk), .pulse_b (ce_rst_pulse) + ); + + pulse_stretch_min #(.LENGTH(32)) pulse_stretch_min_ce ( + .clk(ce_clk), .rst(1'b0), + .pulse_in(ce_rst_pulse), .pulse_out(ce_rst) + ); + + //--------------------------------------------------------------------------- + // Control Path + //--------------------------------------------------------------------------- + + assign ctrlport_clk = ce_clk; + assign ctrlport_rst = ce_rst; + + ctrlport_endpoint #( + .THIS_PORTID (THIS_PORTID), + .SYNC_CLKS (0), + .AXIS_CTRL_MST_EN (0), + .AXIS_CTRL_SLV_EN (1), + .SLAVE_FIFO_SIZE ($clog2(32)) + ) ctrlport_endpoint_i ( + .rfnoc_ctrl_clk (rfnoc_ctrl_clk), + .rfnoc_ctrl_rst (rfnoc_ctrl_rst), + .ctrlport_clk (ctrlport_clk), + .ctrlport_rst (ctrlport_rst), + .s_rfnoc_ctrl_tdata (s_rfnoc_ctrl_tdata), + .s_rfnoc_ctrl_tlast (s_rfnoc_ctrl_tlast), + .s_rfnoc_ctrl_tvalid (s_rfnoc_ctrl_tvalid), + .s_rfnoc_ctrl_tready (s_rfnoc_ctrl_tready), + .m_rfnoc_ctrl_tdata (m_rfnoc_ctrl_tdata), + .m_rfnoc_ctrl_tlast (m_rfnoc_ctrl_tlast), + .m_rfnoc_ctrl_tvalid (m_rfnoc_ctrl_tvalid), + .m_rfnoc_ctrl_tready (m_rfnoc_ctrl_tready), + .m_ctrlport_req_wr (m_ctrlport_req_wr), + .m_ctrlport_req_rd (m_ctrlport_req_rd), + .m_ctrlport_req_addr (m_ctrlport_req_addr), + .m_ctrlport_req_data (m_ctrlport_req_data), + .m_ctrlport_req_byte_en (), + .m_ctrlport_req_has_time (), + .m_ctrlport_req_time (), + .m_ctrlport_resp_ack (m_ctrlport_resp_ack), + .m_ctrlport_resp_status (2'b0), + .m_ctrlport_resp_data (m_ctrlport_resp_data), + .s_ctrlport_req_wr (1'b0), + .s_ctrlport_req_rd (1'b0), + .s_ctrlport_req_addr (20'b0), + .s_ctrlport_req_portid (10'b0), + .s_ctrlport_req_rem_epid (16'b0), + .s_ctrlport_req_rem_portid (10'b0), + .s_ctrlport_req_data (32'b0), + .s_ctrlport_req_byte_en (4'hF), + .s_ctrlport_req_has_time (1'b0), + .s_ctrlport_req_time (64'b0), + .s_ctrlport_resp_ack (), + .s_ctrlport_resp_status (), + .s_ctrlport_resp_data () + ); + + //--------------------------------------------------------------------------- + // Data Path + //--------------------------------------------------------------------------- + + genvar i; + + assign axis_data_clk = ce_clk; + assign axis_data_rst = ce_rst; + + //--------------------- + // Input Data Paths + //--------------------- + + for (i = 0; i < NUM_PORTS; i = i + 1) begin: gen_input_in + chdr_to_axis_pyld_ctxt #( + .CHDR_W (CHDR_W), + .ITEM_W (32), + .NIPC (1), + .SYNC_CLKS (0), + .CONTEXT_FIFO_SIZE ($clog2(2)), + .PAYLOAD_FIFO_SIZE ($clog2(32)), + .CONTEXT_PREFETCH_EN (1) + ) chdr_to_axis_pyld_ctxt_in_in ( + .axis_chdr_clk (rfnoc_chdr_clk), + .axis_chdr_rst (rfnoc_chdr_rst), + .axis_data_clk (axis_data_clk), + .axis_data_rst (axis_data_rst), + .s_axis_chdr_tdata (s_rfnoc_chdr_tdata[((0+i)*CHDR_W)+:CHDR_W]), + .s_axis_chdr_tlast (s_rfnoc_chdr_tlast[0+i]), + .s_axis_chdr_tvalid (s_rfnoc_chdr_tvalid[0+i]), + .s_axis_chdr_tready (s_rfnoc_chdr_tready[0+i]), + .m_axis_payload_tdata (m_in_payload_tdata[(32*1)*i+:(32*1)]), + .m_axis_payload_tkeep (m_in_payload_tkeep[1*i+:1]), + .m_axis_payload_tlast (m_in_payload_tlast[i]), + .m_axis_payload_tvalid (m_in_payload_tvalid[i]), + .m_axis_payload_tready (m_in_payload_tready[i]), + .m_axis_context_tdata (m_in_context_tdata[CHDR_W*i+:CHDR_W]), + .m_axis_context_tuser (m_in_context_tuser[4*i+:4]), + .m_axis_context_tlast (m_in_context_tlast[i]), + .m_axis_context_tvalid (m_in_context_tvalid[i]), + .m_axis_context_tready (m_in_context_tready[i]), + .flush_en (data_i_flush_en), + .flush_timeout (data_i_flush_timeout), + .flush_active (data_i_flush_active[0+i]), + .flush_done (data_i_flush_done[0+i]) + ); + end + + //--------------------- + // Output Data Paths + //--------------------- + + for (i = 0; i < NUM_PORTS; i = i + 1) begin: gen_output_out + axis_pyld_ctxt_to_chdr #( + .CHDR_W (CHDR_W), + .ITEM_W (32), + .NIPC (1), + .SYNC_CLKS (0), + .CONTEXT_FIFO_SIZE ($clog2(2)), + .PAYLOAD_FIFO_SIZE ($clog2(32)), + .MTU (MTU), + .CONTEXT_PREFETCH_EN (1) + ) axis_pyld_ctxt_to_chdr_out_out ( + .axis_chdr_clk (rfnoc_chdr_clk), + .axis_chdr_rst (rfnoc_chdr_rst), + .axis_data_clk (axis_data_clk), + .axis_data_rst (axis_data_rst), + .m_axis_chdr_tdata (m_rfnoc_chdr_tdata[(0+i)*CHDR_W+:CHDR_W]), + .m_axis_chdr_tlast (m_rfnoc_chdr_tlast[0+i]), + .m_axis_chdr_tvalid (m_rfnoc_chdr_tvalid[0+i]), + .m_axis_chdr_tready (m_rfnoc_chdr_tready[0+i]), + .s_axis_payload_tdata (s_out_payload_tdata[(32*1)*i+:(32*1)]), + .s_axis_payload_tkeep (s_out_payload_tkeep[1*i+:1]), + .s_axis_payload_tlast (s_out_payload_tlast[i]), + .s_axis_payload_tvalid (s_out_payload_tvalid[i]), + .s_axis_payload_tready (s_out_payload_tready[i]), + .s_axis_context_tdata (s_out_context_tdata[CHDR_W*i+:CHDR_W]), + .s_axis_context_tuser (s_out_context_tuser[4*i+:4]), + .s_axis_context_tlast (s_out_context_tlast[i]), + .s_axis_context_tvalid (s_out_context_tvalid[i]), + .s_axis_context_tready (s_out_context_tready[i]), + .framer_errors (), + .flush_en (data_o_flush_en), + .flush_timeout (data_o_flush_timeout), + .flush_active (data_o_flush_active[0+i]), + .flush_done (data_o_flush_done[0+i]) + ); + end + +endmodule // noc_shell_window + + +`default_nettype wire diff --git a/fpga/usrp3/lib/rfnoc/blocks/rfnoc_block_window/rfnoc_block_window.v b/fpga/usrp3/lib/rfnoc/blocks/rfnoc_block_window/rfnoc_block_window.v new file mode 100644 index 000000000..c25145450 --- /dev/null +++ b/fpga/usrp3/lib/rfnoc/blocks/rfnoc_block_window/rfnoc_block_window.v @@ -0,0 +1,285 @@ +// +// Copyright 2020 Ettus Research, a National Instruments Brand +// +// SPDX-License-Identifier: LGPL-3.0-or-later +// +// Module: rfnoc_block_window +// +// Description: +// +// Windowing module for use with FFT block. This block can be loaded with up +// to MAX_WINDOW_SIZE coefficients. Each input packet is then multiplied by +// the preloaded coefficients before being output. +// +// The first sample of the first packet is multiplied by the first +// coefficient, then the second sample is multiplied by the second +// coefficient, and so on. After "window size" coefficients, processing +// continues with the first coefficient again, and the process repeats. +// +// See rfnoc_block_window_regs.vh for register descriptions. +// +// Parameters: +// +// THIS_PORTID : Control crossbar port to which this block is connected +// CHDR_W : AXIS-CHDR data bus width +// MTU : Maximum transmission unit (i.e., maximum packet size in +// CHDR words is 2**MTU). +// NUM_PORTS : Number of window instances to include. +// MAX_WINDOW_SIZE : Maximum window size to support, in number of samples. +// This is ideally a power of 2. +// + +`default_nettype none + + +module rfnoc_block_window #( + parameter [9:0] THIS_PORTID = 10'd0, + parameter CHDR_W = 64, + parameter [5:0] MTU = 10, + parameter NUM_PORTS = 1, + parameter MAX_WINDOW_SIZE = 4096 +) ( + // RFNoC Framework Clocks and Resets + input wire rfnoc_chdr_clk, + input wire rfnoc_ctrl_clk, + input wire ce_clk, + // RFNoC Backend Interface + input wire [ 511:0] rfnoc_core_config, + output wire [ 511:0] rfnoc_core_status, + // AXIS-CHDR Input Ports (from framework) + input wire [NUM_PORTS*CHDR_W-1:0] s_rfnoc_chdr_tdata, + input wire [ NUM_PORTS-1:0] s_rfnoc_chdr_tlast, + input wire [ NUM_PORTS-1:0] s_rfnoc_chdr_tvalid, + output wire [ NUM_PORTS-1:0] s_rfnoc_chdr_tready, + // AXIS-CHDR Output Ports (to framework) + output wire [NUM_PORTS*CHDR_W-1:0] m_rfnoc_chdr_tdata, + output wire [ NUM_PORTS-1:0] m_rfnoc_chdr_tlast, + output wire [ NUM_PORTS-1:0] m_rfnoc_chdr_tvalid, + input wire [ NUM_PORTS-1:0] m_rfnoc_chdr_tready, + // AXIS-Ctrl Input Port (from framework) + input wire [ 31:0] s_rfnoc_ctrl_tdata, + input wire s_rfnoc_ctrl_tlast, + input wire s_rfnoc_ctrl_tvalid, + output wire s_rfnoc_ctrl_tready, + // AXIS-Ctrl Output Port (to framework) + output wire [ 31:0] m_rfnoc_ctrl_tdata, + output wire m_rfnoc_ctrl_tlast, + output wire m_rfnoc_ctrl_tvalid, + input wire m_rfnoc_ctrl_tready +); + + `include "rfnoc_block_window_regs.vh" + + //--------------------------------------------------------------------------- + // Signal Declarations + //--------------------------------------------------------------------------- + + // CtrlPort Master + wire m_ctrlport_req_wr; + wire m_ctrlport_req_rd; + wire [19:0] m_ctrlport_req_addr; + wire [31:0] m_ctrlport_req_data; + wire m_ctrlport_resp_ack; + wire [31:0] m_ctrlport_resp_data; + // Payload Stream to User Logic: in + wire [NUM_PORTS*32*1-1:0] m_in_payload_tdata; + wire [NUM_PORTS-1:0] m_in_payload_tlast; + wire [NUM_PORTS-1:0] m_in_payload_tvalid; + wire [NUM_PORTS-1:0] m_in_payload_tready; + // Context Stream to User Logic: in + wire [NUM_PORTS*CHDR_W-1:0] m_in_context_tdata; + wire [NUM_PORTS*4-1:0] m_in_context_tuser; + wire [NUM_PORTS-1:0] m_in_context_tlast; + wire [NUM_PORTS-1:0] m_in_context_tvalid; + wire [NUM_PORTS-1:0] m_in_context_tready; + // Payload Stream to User Logic: out + wire [NUM_PORTS*32*1-1:0] s_out_payload_tdata; + wire [NUM_PORTS-1:0] s_out_payload_tlast; + wire [NUM_PORTS-1:0] s_out_payload_tvalid; + wire [NUM_PORTS-1:0] s_out_payload_tready; + // Context Stream to User Logic: out + wire [NUM_PORTS*CHDR_W-1:0] s_out_context_tdata; + wire [NUM_PORTS*4-1:0] s_out_context_tuser; + wire [NUM_PORTS-1:0] s_out_context_tlast; + wire [NUM_PORTS-1:0] s_out_context_tvalid; + wire [NUM_PORTS-1:0] s_out_context_tready; + + //--------------------------------------------------------------------------- + // NoC Shell + //--------------------------------------------------------------------------- + + wire ce_rst; + + noc_shell_window #( + .CHDR_W (CHDR_W), + .THIS_PORTID (THIS_PORTID), + .MTU (MTU), + .NUM_PORTS (NUM_PORTS) + ) noc_shell_window_i ( + //--------------------- + // Framework Interface + //--------------------- + + // Clock Inputs + .rfnoc_chdr_clk (rfnoc_chdr_clk), + .rfnoc_ctrl_clk (rfnoc_ctrl_clk), + .ce_clk (ce_clk), + // Reset Outputs + .rfnoc_chdr_rst (), + .rfnoc_ctrl_rst (), + .ce_rst (ce_rst), + // RFNoC Backend Interface + .rfnoc_core_config (rfnoc_core_config), + .rfnoc_core_status (rfnoc_core_status), + // CHDR Input Ports (from framework) + .s_rfnoc_chdr_tdata (s_rfnoc_chdr_tdata), + .s_rfnoc_chdr_tlast (s_rfnoc_chdr_tlast), + .s_rfnoc_chdr_tvalid (s_rfnoc_chdr_tvalid), + .s_rfnoc_chdr_tready (s_rfnoc_chdr_tready), + // CHDR Output Ports (to framework) + .m_rfnoc_chdr_tdata (m_rfnoc_chdr_tdata), + .m_rfnoc_chdr_tlast (m_rfnoc_chdr_tlast), + .m_rfnoc_chdr_tvalid (m_rfnoc_chdr_tvalid), + .m_rfnoc_chdr_tready (m_rfnoc_chdr_tready), + // AXIS-Ctrl Input Port (from framework) + .s_rfnoc_ctrl_tdata (s_rfnoc_ctrl_tdata), + .s_rfnoc_ctrl_tlast (s_rfnoc_ctrl_tlast), + .s_rfnoc_ctrl_tvalid (s_rfnoc_ctrl_tvalid), + .s_rfnoc_ctrl_tready (s_rfnoc_ctrl_tready), + // AXIS-Ctrl Output Port (to framework) + .m_rfnoc_ctrl_tdata (m_rfnoc_ctrl_tdata), + .m_rfnoc_ctrl_tlast (m_rfnoc_ctrl_tlast), + .m_rfnoc_ctrl_tvalid (m_rfnoc_ctrl_tvalid), + .m_rfnoc_ctrl_tready (m_rfnoc_ctrl_tready), + + //--------------------- + // Client Interface + //--------------------- + + // CtrlPort Clock and Reset + .ctrlport_clk (), + .ctrlport_rst (), + // CtrlPort Master + .m_ctrlport_req_wr (m_ctrlport_req_wr), + .m_ctrlport_req_rd (m_ctrlport_req_rd), + .m_ctrlport_req_addr (m_ctrlport_req_addr), + .m_ctrlport_req_data (m_ctrlport_req_data), + .m_ctrlport_resp_ack (m_ctrlport_resp_ack), + .m_ctrlport_resp_data (m_ctrlport_resp_data), + + // AXI-Stream Payload Context Clock and Reset + .axis_data_clk (), + .axis_data_rst (), + // Payload Stream to User Logic: in + .m_in_payload_tdata (m_in_payload_tdata), + .m_in_payload_tkeep (), + .m_in_payload_tlast (m_in_payload_tlast), + .m_in_payload_tvalid (m_in_payload_tvalid), + .m_in_payload_tready (m_in_payload_tready), + // Context Stream to User Logic: in + .m_in_context_tdata (m_in_context_tdata), + .m_in_context_tuser (m_in_context_tuser), + .m_in_context_tlast (m_in_context_tlast), + .m_in_context_tvalid (m_in_context_tvalid), + .m_in_context_tready (m_in_context_tready), + // Payload Stream from User Logic: out + .s_out_payload_tdata (s_out_payload_tdata), + .s_out_payload_tkeep ({NUM_PORTS{1'b1}}), + .s_out_payload_tlast (s_out_payload_tlast), + .s_out_payload_tvalid (s_out_payload_tvalid), + .s_out_payload_tready (s_out_payload_tready), + // Context Stream from User Logic: out + .s_out_context_tdata (s_out_context_tdata), + .s_out_context_tuser (s_out_context_tuser), + .s_out_context_tlast (s_out_context_tlast), + .s_out_context_tvalid (s_out_context_tvalid), + .s_out_context_tready (s_out_context_tready) + ); + + // Input packets have the same properties as output packets, so pass through + // the header information unchanged. + assign s_out_context_tdata = m_in_context_tdata; + assign s_out_context_tuser = m_in_context_tuser; + assign s_out_context_tlast = m_in_context_tlast; + assign s_out_context_tvalid = m_in_context_tvalid; + assign m_in_context_tready = s_out_context_tready; + + + //--------------------------------------------------------------------------- + // CtrlPort Splitter + //--------------------------------------------------------------------------- + + // Create a CtrlPort bus for each port instance + + wire [ 1*NUM_PORTS-1:0] ctrlport_req_wr; + wire [ 1*NUM_PORTS-1:0] ctrlport_req_rd; + wire [20*NUM_PORTS-1:0] ctrlport_req_addr; + wire [32*NUM_PORTS-1:0] ctrlport_req_data; + wire [ 1*NUM_PORTS-1:0] ctrlport_resp_ack; + wire [32*NUM_PORTS-1:0] ctrlport_resp_data; + + ctrlport_decoder #( + .NUM_SLAVES (NUM_PORTS), + .BASE_ADDR (0), + .SLAVE_ADDR_W (WINDOW_ADDR_W) + ) ctrlport_decoder_i ( + .ctrlport_clk (ce_clk), + .ctrlport_rst (ce_rst), + .s_ctrlport_req_wr (m_ctrlport_req_wr), + .s_ctrlport_req_rd (m_ctrlport_req_rd), + .s_ctrlport_req_addr (m_ctrlport_req_addr), + .s_ctrlport_req_data (m_ctrlport_req_data), + .s_ctrlport_req_byte_en (4'hF), + .s_ctrlport_req_has_time (1'b0), + .s_ctrlport_req_time (64'b0), + .s_ctrlport_resp_ack (m_ctrlport_resp_ack), + .s_ctrlport_resp_status (), + .s_ctrlport_resp_data (m_ctrlport_resp_data), + .m_ctrlport_req_wr (ctrlport_req_wr), + .m_ctrlport_req_rd (ctrlport_req_rd), + .m_ctrlport_req_addr (ctrlport_req_addr), + .m_ctrlport_req_data (ctrlport_req_data), + .m_ctrlport_req_byte_en (), + .m_ctrlport_req_has_time (), + .m_ctrlport_req_time (), + .m_ctrlport_resp_ack (ctrlport_resp_ack), + .m_ctrlport_resp_status ({NUM_PORTS{2'b0}}), + .m_ctrlport_resp_data (ctrlport_resp_data) + ); + + //--------------------------------------------------------------------------- + // Port Instances + //--------------------------------------------------------------------------- + + genvar port; + generate + for (port = 0; port < NUM_PORTS; port = port+1) begin : gen_ports + + rfnoc_window_core #( + .MAX_WINDOW_SIZE (MAX_WINDOW_SIZE), + .COEFF_WIDTH (REG_LOAD_COEFF_LEN) + ) rfnoc_window_core_i ( + .clk (ce_clk), + .rst (ce_rst), + .s_ctrlport_req_wr (ctrlport_req_wr [port* 1 +: 1]), + .s_ctrlport_req_rd (ctrlport_req_rd [port* 1 +: 1]), + .s_ctrlport_req_addr (ctrlport_req_addr [port*20 +: 20]), + .s_ctrlport_req_data (ctrlport_req_data [port*32 +: 32]), + .s_ctrlport_resp_ack (ctrlport_resp_ack [port* 1 +: 1]), + .s_ctrlport_resp_data (ctrlport_resp_data [port*32 +: 32]), + .s_tdata (m_in_payload_tdata [port*32 +: 32]), + .s_tlast (m_in_payload_tlast [port* 1 +: 1]), + .s_tvalid (m_in_payload_tvalid [port* 1 +: 1]), + .s_tready (m_in_payload_tready [port* 1 +: 1]), + .m_tdata (s_out_payload_tdata [port*32 +: 32]), + .m_tlast (s_out_payload_tlast [port* 1 +: 1]), + .m_tvalid (s_out_payload_tvalid [port* 1 +: 1]), + .m_tready (s_out_payload_tready [port* 1 +: 1]) + ); + + end + endgenerate + +endmodule + +`default_nettype wire diff --git a/fpga/usrp3/lib/rfnoc/blocks/rfnoc_block_window/rfnoc_block_window_regs.vh b/fpga/usrp3/lib/rfnoc/blocks/rfnoc_block_window/rfnoc_block_window_regs.vh new file mode 100644 index 000000000..f847a4b25 --- /dev/null +++ b/fpga/usrp3/lib/rfnoc/blocks/rfnoc_block_window/rfnoc_block_window_regs.vh @@ -0,0 +1,59 @@ +// +// Copyright 2020 Ettus Research, a National Instruments Brand +// +// SPDX-License-Identifier: LGPL-3.0-or-later +// +// Module: rfnoc_block_window_regs (Header) +// +// Description: RFNoC Window block register descriptions +// + +// Address space size, per window module. That is, each window module's +// address space is separated in the CtrlPort address space by 2^WINDOW_ADDR_W +// bytes. +localparam WINDOW_ADDR_W = 4; + + + +// REG_WINDOW_SIZE (R/W) +// +// Controls the current window size, in number of samples. +// +localparam REG_WINDOW_SIZE = 'h0; + + +// REG_WINDOW_MAX_SIZE (R) +// +// Reports the maximum supported window size, in number of samples. +// +localparam REG_WINDOW_MAX_SIZE = 'h4; + + +// REG_LOAD_COEFF (W) +// +// Register for inputting the next coefficient to be loaded into the window +// module. To load a new set of coefficients, write REG_WINDOW_SIZE-1 +// coefficients to this register, then write the last coefficient to +// REG_LOAD_COEFF_LAST. +// +// [31:16] : Reserved +// [15: 0] : The next coefficient to be loaded +// +localparam REG_LOAD_COEFF = 'h8; +// +localparam REG_LOAD_COEFF_LEN = 16; + + +// REG_LOAD_COEFF_LAST (W) +// +// Register for inputting the last coefficient to be loaded into the window +// module. To load a new set of filter coefficients, write REG_WINDOW_SIZE-1 +// coefficients to REG_LOAD_COEFF, then write the last coefficient to this +// register. +// +// [31:16] : Reserved +// [15: 0] : The last coefficient to be loaded +// +localparam REG_LOAD_COEFF_LAST = 'hC; +// +// The length of the last coefficient is the same as REG_LOAD_COEFF_LEN. diff --git a/fpga/usrp3/lib/rfnoc/blocks/rfnoc_block_window/rfnoc_block_window_tb.sv b/fpga/usrp3/lib/rfnoc/blocks/rfnoc_block_window/rfnoc_block_window_tb.sv new file mode 100644 index 000000000..bc6427962 --- /dev/null +++ b/fpga/usrp3/lib/rfnoc/blocks/rfnoc_block_window/rfnoc_block_window_tb.sv @@ -0,0 +1,424 @@ +// +// Copyright 2020 Ettus Research, a National Instruments Brand +// +// SPDX-License-Identifier: LGPL-3.0-or-later +// +// Module: rfnoc_block_window_tb +// +// Description: Testbench for the Window RFNoC block. +// + +`default_nettype none + + +module rfnoc_block_window_tb; + + `include "test_exec.svh" + + import PkgTestExec::*; + import PkgChdrUtils::*; + import PkgRfnocBlockCtrlBfm::*; + import PkgRfnocItemUtils::*; + + `include "rfnoc_block_window_regs.vh" + + //--------------------------------------------------------------------------- + // Testbench Configuration + //--------------------------------------------------------------------------- + + localparam [31:0] NOC_ID = 32'hD0530000; + localparam [ 9:0] THIS_PORTID = 10'h123; + localparam int CHDR_W = 64; // CHDR size in bits + localparam int MTU = 10; // Log2 of max transmission unit in CHDR words + localparam int NUM_PORTS = 2; + localparam int NUM_PORTS_I = NUM_PORTS; + localparam int NUM_PORTS_O = NUM_PORTS; + localparam int ITEM_W = 32; // Sample size in bits + localparam int SPP = 256; // Samples per packet + localparam int PKT_SIZE_BYTES = SPP * (ITEM_W/8); + localparam int STALL_PROB = 25; // Default BFM stall probability + localparam real CHDR_CLK_PER = 5.0; // 200 MHz + localparam real CTRL_CLK_PER = 8.0; // 125 MHz + localparam real CE_CLK_PER = 4.0; // 250 MHz + localparam int MAX_WINDOW_SIZE = 128; + + //--------------------------------------------------------------------------- + // Clocks and Resets + //--------------------------------------------------------------------------- + + bit rfnoc_chdr_clk; + bit rfnoc_ctrl_clk; + bit ce_clk; + + sim_clock_gen #(CHDR_CLK_PER) rfnoc_chdr_clk_gen (.clk(rfnoc_chdr_clk), .rst()); + sim_clock_gen #(CTRL_CLK_PER) rfnoc_ctrl_clk_gen (.clk(rfnoc_ctrl_clk), .rst()); + sim_clock_gen #(CE_CLK_PER) ce_clk_gen (.clk(ce_clk), .rst()); + + //--------------------------------------------------------------------------- + // Bus Functional Models + //--------------------------------------------------------------------------- + + // Backend Interface + RfnocBackendIf backend (rfnoc_chdr_clk, rfnoc_ctrl_clk); + + // AXIS-Ctrl Interface + AxiStreamIf #(32) m_ctrl (rfnoc_ctrl_clk, 1'b0); + AxiStreamIf #(32) s_ctrl (rfnoc_ctrl_clk, 1'b0); + + // AXIS-CHDR Interfaces + AxiStreamIf #(CHDR_W) m_chdr [NUM_PORTS_I] (rfnoc_chdr_clk, 1'b0); + AxiStreamIf #(CHDR_W) s_chdr [NUM_PORTS_O] (rfnoc_chdr_clk, 1'b0); + + // Block Controller BFM + RfnocBlockCtrlBfm #(CHDR_W, ITEM_W) blk_ctrl = new(backend, m_ctrl, s_ctrl); + + // CHDR word and item/sample data types + typedef ChdrData #(CHDR_W, ITEM_W)::chdr_word_t chdr_word_t; + typedef ChdrData #(CHDR_W, ITEM_W)::item_t item_t; + typedef ChdrData #(CHDR_W, ITEM_W)::item_queue_t item_queue_t; + + // Connect block controller to BFMs + for (genvar i = 0; i < NUM_PORTS_I; i++) begin : gen_bfm_input_connections + initial begin + blk_ctrl.connect_master_data_port(i, m_chdr[i], PKT_SIZE_BYTES); + blk_ctrl.set_master_stall_prob(i, STALL_PROB); + end + end + for (genvar i = 0; i < NUM_PORTS_O; i++) begin : gen_bfm_output_connections + initial begin + blk_ctrl.connect_slave_data_port(i, s_chdr[i]); + blk_ctrl.set_slave_stall_prob(i, STALL_PROB); + end + end + + //--------------------------------------------------------------------------- + // Device Under Test (DUT) + //--------------------------------------------------------------------------- + + // DUT Slave (Input) Port Signals + logic [CHDR_W*NUM_PORTS_I-1:0] s_rfnoc_chdr_tdata; + logic [ NUM_PORTS_I-1:0] s_rfnoc_chdr_tlast; + logic [ NUM_PORTS_I-1:0] s_rfnoc_chdr_tvalid; + logic [ NUM_PORTS_I-1:0] s_rfnoc_chdr_tready; + + // DUT Master (Output) Port Signals + logic [CHDR_W*NUM_PORTS_O-1:0] m_rfnoc_chdr_tdata; + logic [ NUM_PORTS_O-1:0] m_rfnoc_chdr_tlast; + logic [ NUM_PORTS_O-1:0] m_rfnoc_chdr_tvalid; + logic [ NUM_PORTS_O-1:0] m_rfnoc_chdr_tready; + + // Map the array of BFMs to a flat vector for the DUT connections + for (genvar i = 0; i < NUM_PORTS_I; i++) begin : gen_dut_input_connections + // Connect BFM master to DUT slave port + assign s_rfnoc_chdr_tdata[CHDR_W*i+:CHDR_W] = m_chdr[i].tdata; + assign s_rfnoc_chdr_tlast[i] = m_chdr[i].tlast; + assign s_rfnoc_chdr_tvalid[i] = m_chdr[i].tvalid; + assign m_chdr[i].tready = s_rfnoc_chdr_tready[i]; + end + for (genvar i = 0; i < NUM_PORTS_O; i++) begin : gen_dut_output_connections + // Connect BFM slave to DUT master port + assign s_chdr[i].tdata = m_rfnoc_chdr_tdata[CHDR_W*i+:CHDR_W]; + assign s_chdr[i].tlast = m_rfnoc_chdr_tlast[i]; + assign s_chdr[i].tvalid = m_rfnoc_chdr_tvalid[i]; + assign m_rfnoc_chdr_tready[i] = s_chdr[i].tready; + end + + rfnoc_block_window #( + .THIS_PORTID (THIS_PORTID), + .CHDR_W (CHDR_W), + .MTU (MTU), + .NUM_PORTS (NUM_PORTS), + .MAX_WINDOW_SIZE (MAX_WINDOW_SIZE) + ) dut ( + .rfnoc_chdr_clk (rfnoc_chdr_clk), + .rfnoc_ctrl_clk (rfnoc_ctrl_clk), + .ce_clk (ce_clk), + .rfnoc_core_config (backend.cfg), + .rfnoc_core_status (backend.sts), + .s_rfnoc_chdr_tdata (s_rfnoc_chdr_tdata), + .s_rfnoc_chdr_tlast (s_rfnoc_chdr_tlast), + .s_rfnoc_chdr_tvalid (s_rfnoc_chdr_tvalid), + .s_rfnoc_chdr_tready (s_rfnoc_chdr_tready), + .m_rfnoc_chdr_tdata (m_rfnoc_chdr_tdata), + .m_rfnoc_chdr_tlast (m_rfnoc_chdr_tlast), + .m_rfnoc_chdr_tvalid (m_rfnoc_chdr_tvalid), + .m_rfnoc_chdr_tready (m_rfnoc_chdr_tready), + .s_rfnoc_ctrl_tdata (m_ctrl.tdata), + .s_rfnoc_ctrl_tlast (m_ctrl.tlast), + .s_rfnoc_ctrl_tvalid (m_ctrl.tvalid), + .s_rfnoc_ctrl_tready (m_ctrl.tready), + .m_rfnoc_ctrl_tdata (s_ctrl.tdata), + .m_rfnoc_ctrl_tlast (s_ctrl.tlast), + .m_rfnoc_ctrl_tvalid (s_ctrl.tvalid), + .m_rfnoc_ctrl_tready (s_ctrl.tready) + ); + + + //--------------------------------------------------------------------------- + // Register Access + //--------------------------------------------------------------------------- + + task automatic write_reg(int port, bit [19:0] addr, bit [31:0] value); + blk_ctrl.reg_write(port * (2**WINDOW_ADDR_W) + addr, value); + endtask : write_reg + + task automatic read_reg(int port, bit [19:0] addr, output logic [31:0] value); + blk_ctrl.reg_read(port * (2**WINDOW_ADDR_W) + addr, value); + endtask : read_reg + + + //--------------------------------------------------------------------------- + // Test Procedures + //--------------------------------------------------------------------------- + + // Model the behavior of the mult_rc module. As configured for our DUT, it + // treats each value as a 16-bit signed fixed point value with 15 fractional + // bits. + function bit [31:0] mult_rc(bit signed [15:0] real_data, bit signed [31:0] complex_data); + bit [47:0] temp; + bit [31:0] result; + temp = (real_data * signed'(complex_data[31:16])) >> 15; + result[31:16] = temp; + temp = (real_data * signed'(complex_data[15: 0])) >> 15; + result[15: 0] = temp; + return result; + endfunction : mult_rc + + + // Test read-only and read/write registers + task automatic test_registers(int port); + int unsigned value, expected; + + test.start_test($sformatf("Test registers, port %0d", port), 10us); + + read_reg(port, REG_WINDOW_MAX_SIZE, value); + `ASSERT_ERROR(value == MAX_WINDOW_SIZE, "REG_WINDOW_MAX_SIZE reports incorrect value"); + + expected = 2**$clog2(MAX_WINDOW_SIZE+1)-1; // Max value (all ones) + write_reg(port, REG_WINDOW_SIZE, expected); + read_reg(port, REG_WINDOW_SIZE, value); + `ASSERT_ERROR(value == expected, "REG_WINDOW_SIZE did not update"); + + expected = 0; + write_reg(port, REG_WINDOW_SIZE, expected); + read_reg(port, REG_WINDOW_SIZE, value); + `ASSERT_ERROR(value == expected, "REG_WINDOW_SIZE did not update"); + + test.end_test(); + endtask : test_registers + + + // Run a single test on the block using random coefficients and packet data. + // + // port : Port number of the block to test + // window_size : Size of the window to use (number of coefficients) + // packet_len : Packet size to input and read out, in samples + // num_packets : Number of packets to input and check on the output + // + task automatic test_window(int port, int window_size, int packet_len, int num_packets); + item_t coefficients[$]; + int coeff_index; + mailbox #(item_queue_t) packets = new(); + + $display("Testing: window_size=%04d, packet_len=%04d, num_packets=%04d", + window_size, packet_len, num_packets); + + write_reg(port, REG_WINDOW_SIZE, window_size); + + // Generate random coefficients + for (int count=0; count < window_size; count++) begin + item_t coeff; + + coeff = $urandom(); + coefficients.push_back(coeff); + // Load each coefficient, but write the last coefficient to the "last" + // register. + if (count == window_size-1) + write_reg(port, REG_LOAD_COEFF_LAST, coeff); + else + write_reg(port, REG_LOAD_COEFF, coeff); + end + + // Updating the coefficients should restart the address counter + coeff_index = 0; + + // Generate and enqueue packets for transmission + for (int packet_count = 0; packet_count < num_packets; packet_count++) begin + item_t payload[$]; + + payload = {}; + for (int sample_count = 0; sample_count < packet_len; sample_count++) begin + payload.push_back($urandom()); + end + packets.put(payload); + blk_ctrl.send_items(port, payload); + end + + // Receive and check the results + for (int packet_count = 0; packet_count < num_packets; packet_count++) begin + item_t sent[$], received[$], expected[$]; + packets.get(sent); + + // Calculate the expected result + foreach(sent[i]) begin + expected[i] = mult_rc(coefficients[coeff_index], sent[i]); + if (coeff_index >= window_size-1) coeff_index = 0; + else coeff_index++; + end + + // Retrieve the resulting packet + blk_ctrl.recv_items(port, received); + + // Check that the packet length matches what was input + `ASSERT_ERROR( + expected.size() == received.size(), + $sformatf("For packet %0d, received length was incorrect", packet_count) + ); + + // Check that the payload is correct + foreach(received[i]) begin + `ASSERT_ERROR( + received[i] == expected[i], + $sformatf("Unexpected result for packet %0d, sample %0d", packet_count, i) + ); + end + end + + endtask : test_window + + + // Run random tests to look for anything unexpected + // + // port : Port number of the block to test + // num_iterations : Number of times to repeat a random test + // max_window_size : Maximum window size to use (number of coefficients) + // max_packet_len : Maximum packet length to use (in samples) + // + task automatic test_random( + int port, + int num_iterations = 100, + int max_window_size = MAX_WINDOW_SIZE, + int max_packet_len = SPP + ); + test.start_test("Test random", 10ms); + + // Repeat the test num_iterations times + for (int iteration = 0; iteration < num_iterations; iteration++) begin + int window_size; + int packet_len; + int num_packets; + int packets_per_window; + + // Choose random attributes for this test + window_size = $urandom_range(1, MAX_WINDOW_SIZE); + packet_len = $urandom_range(1, SPP); + + // Send up to two windows worth of packets + packets_per_window = $ceil(real'(window_size) / real'(packet_len)); + num_packets = $urandom_range(1, 2*packets_per_window); + + // Run the test + test_window(port, window_size, packet_len, num_packets); + end + + test.end_test(); + endtask : test_random + + + // Run a few directed tests to check corner cases + task automatic test_directed(int port); + test.start_test("Test directed", 100us); + test_window(port, 16, 1, 33); // Min packet size + test_window(port, 16, 8, 5); + test_window(port, 16, 16, 3); // Packet size equals window + test_window(port, 16, 31, 3); // Packet size larger than window + test_window(port, 16, SPP, 3); // Max packet size + if (MAX_WINDOW_SIZE <= SPP) begin // Max window size and packet size + test_window(port, MAX_WINDOW_SIZE, MAX_WINDOW_SIZE, 2); + test_window(port, MAX_WINDOW_SIZE, SPP, 2); + end else begin + test_window(port, MAX_WINDOW_SIZE, SPP, 2); + end + test.end_test(); + endtask : test_directed + + // Test with slow BFM slave to make sure back-pressure is working correctly. + task automatic test_back_pressure(int port); + test.start_test("Test back pressure", 1ms); + blk_ctrl.set_slave_stall_prob(port, 90); + test_window(port, 16, SPP, 20); + blk_ctrl.set_slave_stall_prob(port, STALL_PROB); + test.end_test(); + endtask : test_back_pressure + + + // Test with slow BFM master to make sure AXI-stream flow control is working + // correctly. + task automatic test_underflow(int port); + test.start_test("Test underflow", 1ms); + blk_ctrl.set_master_stall_prob(port, 90); + test_window(port, 16, SPP, 20); + blk_ctrl.set_master_stall_prob(port, STALL_PROB); + test.end_test(); + endtask : test_underflow + + + //--------------------------------------------------------------------------- + // Main Test Process + //--------------------------------------------------------------------------- + + initial begin : tb_main + int port; + + // Initialize the test exec object for this testbench + test.start_tb("rfnoc_block_window_tb"); + + // Start the BFMs running + blk_ctrl.run(); + + //-------------------------------- + // Reset + //-------------------------------- + + test.start_test("Flush block then reset it", 10us); + blk_ctrl.flush_and_reset(); + test.end_test(); + + //-------------------------------- + // Verify Block Info + //-------------------------------- + + test.start_test("Verify Block Info", 2us); + `ASSERT_ERROR(blk_ctrl.get_noc_id() == NOC_ID, "Incorrect NOC_ID Value"); + `ASSERT_ERROR(blk_ctrl.get_num_data_i() == NUM_PORTS_I, "Incorrect NUM_DATA_I Value"); + `ASSERT_ERROR(blk_ctrl.get_num_data_o() == NUM_PORTS_O, "Incorrect NUM_DATA_O Value"); + `ASSERT_ERROR(blk_ctrl.get_mtu() == MTU, "Incorrect MTU Value"); + test.end_test(); + + //-------------------------------- + // Test Sequences + //-------------------------------- + + // Run register and directed tests on all ports + for (port = 0; port < NUM_PORTS; port++) begin + test_registers(port); + test_directed(port); + end + // Run remaining tests on just one port + port = NUM_PORTS-1; + test_random(port, 100); + test_back_pressure(port); + test_underflow(port); + + //-------------------------------- + // Finish Up + //-------------------------------- + + // Display final statistics and results + test.end_tb(); + end : tb_main + +endmodule : rfnoc_block_window_tb + + +`default_nettype wire diff --git a/fpga/usrp3/lib/rfnoc/blocks/rfnoc_block_window/rfnoc_window_core.v b/fpga/usrp3/lib/rfnoc/blocks/rfnoc_block_window/rfnoc_window_core.v new file mode 100644 index 000000000..e4591a277 --- /dev/null +++ b/fpga/usrp3/lib/rfnoc/blocks/rfnoc_block_window/rfnoc_window_core.v @@ -0,0 +1,141 @@ +// +// Copyright 2020 Ettus Research, a National Instruments Brand +// +// SPDX-License-Identifier: LGPL-3.0-or-later +// +// Module: rfnoc_window_core +// +// Description: +// +// This module contains the registers and window module for a single RFNoC +// window module instance. +// +// Parameters: +// +// MAX_WINDOW_SIZE : Maximum window size to support, in number of samples. +// COEFF_WIDTH : Width of the coefficients to use. +// + +`default_nettype none + + +module rfnoc_window_core #( + parameter MAX_WINDOW_SIZE = 4096, + parameter COEFF_WIDTH = 16 +) ( + input wire clk, + input wire rst, + + // CtrlPort Slave + input wire s_ctrlport_req_wr, + input wire s_ctrlport_req_rd, + input wire [19:0] s_ctrlport_req_addr, + input wire [31:0] s_ctrlport_req_data, + output reg s_ctrlport_resp_ack, + output reg [31:0] s_ctrlport_resp_data, + + // Input data stream + input wire [31:0] s_tdata, + input wire s_tlast, + input wire s_tvalid, + output wire s_tready, + + // Output data stream + output wire [31:0] m_tdata, + output wire m_tlast, + output wire m_tvalid, + input wire m_tready +); + + `include "rfnoc_block_window_regs.vh" + + // The maximum window size is 2**WINDOW_SIZE + localparam WINDOW_SIZE = $clog2(MAX_WINDOW_SIZE); + + // WINDOW_SIZE_W is the number of bits needed to represent 2**WINDOW_SIZE. + localparam WINDOW_SIZE_W = $clog2(MAX_WINDOW_SIZE+1); + + + //----------------------------------------------------------------------- + // Registers + //----------------------------------------------------------------------- + + reg [WINDOW_SIZE_W-1:0] window_size; + reg [ COEFF_WIDTH-1:0] m_axis_coeff_tdata; + reg m_axis_coeff_tlast; + reg m_axis_coeff_tvalid; + + always @(posedge clk) begin + if (rst) begin + window_size <= 'bX; + m_axis_coeff_tdata <= 'bX; + m_axis_coeff_tlast <= 0; + m_axis_coeff_tvalid <= 0; + end else begin + // Default assignments + s_ctrlport_resp_ack <= 0; + s_ctrlport_resp_data <= 0; + m_axis_coeff_tlast <= 0; + m_axis_coeff_tvalid <= 0; + + // Handle register writes + if (s_ctrlport_req_wr) begin + s_ctrlport_resp_ack <= 1; + case (s_ctrlport_req_addr) + REG_WINDOW_SIZE : + window_size <= s_ctrlport_req_data[WINDOW_SIZE_W-1:0]; + REG_LOAD_COEFF : begin + m_axis_coeff_tdata <= s_ctrlport_req_data[COEFF_WIDTH-1:0]; + m_axis_coeff_tlast <= 0; + m_axis_coeff_tvalid <= 1; + end + REG_LOAD_COEFF_LAST : begin + m_axis_coeff_tdata <= s_ctrlport_req_data[COEFF_WIDTH-1:0]; + m_axis_coeff_tlast <= 1; + m_axis_coeff_tvalid <= 1; + end + endcase + end + + // Handle register reads + if (s_ctrlport_req_rd) begin + s_ctrlport_resp_ack <= 1; + case (s_ctrlport_req_addr) + REG_WINDOW_SIZE : + s_ctrlport_resp_data[WINDOW_SIZE_W-1:0] <= window_size; + REG_WINDOW_MAX_SIZE : + s_ctrlport_resp_data[WINDOW_SIZE_W-1:0] <= MAX_WINDOW_SIZE; + endcase + end + end + end + + //----------------------------------------------------------------------- + // Window Instance + //----------------------------------------------------------------------- + + window #( + .WINDOW_SIZE (WINDOW_SIZE), + .COEFF_WIDTH (COEFF_WIDTH) + ) window_i ( + .clk (clk), + .rst (rst), + .window_size (window_size), + .m_axis_coeff_tdata (m_axis_coeff_tdata), + .m_axis_coeff_tlast (m_axis_coeff_tlast), + .m_axis_coeff_tvalid (m_axis_coeff_tvalid), + .m_axis_coeff_tready (), // Window block is always ready + .i_tdata (s_tdata), + .i_tlast (s_tlast), + .i_tvalid (s_tvalid), + .i_tready (s_tready), + .o_tdata (m_tdata), + .o_tlast (m_tlast), + .o_tvalid (m_tvalid), + .o_tready (m_tready) + ); + +endmodule + + +`default_nettype wire diff --git a/fpga/usrp3/lib/rfnoc/blocks/rfnoc_block_window/window.v b/fpga/usrp3/lib/rfnoc/blocks/rfnoc_block_window/window.v new file mode 100644 index 000000000..d7791c45e --- /dev/null +++ b/fpga/usrp3/lib/rfnoc/blocks/rfnoc_block_window/window.v @@ -0,0 +1,166 @@ +// +// Copyright 2020 Ettus Research, a National Instruments Brand +// +// SPDX-License-Identifier: LGPL-3.0-or-later +// +// Description: +// +// Windowing module. Multiplies each input packet by the coefficients loaded +// into an internal memory. +// +// Parameters: +// +// WINDOW_SIZE : Sets the maximum window size to 2^WINDOW_SIZE samples. +// COEFF_WIDTH : The bit width of coefficients. +// + +module window #( + parameter WINDOW_SIZE = 10, + parameter COEFF_WIDTH = 16 +) ( + input wire clk, + input wire rst, + + // Window size to use + input wire [WINDOW_SIZE:0] window_size, + + // Coefficient input + input wire [COEFF_WIDTH-1:0] m_axis_coeff_tdata, + input wire m_axis_coeff_tlast, + input wire m_axis_coeff_tvalid, + output wire m_axis_coeff_tready, + + // Input data stream + input wire [31:0] i_tdata, + input wire i_tlast, + input wire i_tvalid, + output wire i_tready, + + // Output data stream + output wire [31:0] o_tdata, + output wire o_tlast, + output wire o_tvalid, + input wire o_tready +); + + // Sample data stream (from i_tdata) + wire [ 31:0] stream_tdata; + wire stream_tlast; + wire stream_tvalid; + wire stream_tready; + // RAM output data stream (saved coefficients) + wire [ 15:0] ram_tdata; + wire ram_tvalid; + wire ram_tready; + // Counter data stream (RAM address for coefficient lookup) + wire [WINDOW_SIZE-1:0] count_tdata; + wire count_tvalid; + wire count_tready; + // Flow control stream. This keeps the counter stream in sync with the + // sample data stream. + wire flow_tvalid; + wire flow_tready; + + wire clear_counter; + + // Restart the address counter whenever we load a new set of coefficients. + assign clear_counter = m_axis_coeff_tlast & + m_axis_coeff_tvalid & + m_axis_coeff_tready; + + // Split the incoming data stream into two + split_stream_fifo #( + .WIDTH (32), + .ACTIVE_MASK (4'b0011) + ) split_stream_fifo_i ( + .clk (clk), + .reset (rst), + .clear (1'b0), + .i_tdata (i_tdata), + .i_tlast (i_tlast), + .i_tvalid (i_tvalid), + .i_tready (i_tready), + .o0_tdata (stream_tdata), + .o0_tlast (stream_tlast), + .o0_tvalid (stream_tvalid), + .o0_tready (stream_tready), + .o1_tdata (), + .o1_tlast (), + .o1_tvalid (flow_tvalid), + .o1_tready (flow_tready), + .o2_tdata (), + .o2_tlast (), + .o2_tvalid (), + .o2_tready (1'b0), + .o3_tdata (), + .o3_tlast (), + .o3_tvalid (), + .o3_tready (1'b0) + ); + + // Address generation + counter #( + .WIDTH (WINDOW_SIZE) + ) counter_i ( + .clk (clk), + .reset (rst), + .clear (clear_counter), + .max (window_size), + .i_tlast (1'b0), + .i_tvalid (flow_tvalid), + .i_tready (flow_tready), + .o_tdata (count_tdata), + .o_tlast (), + .o_tvalid (count_tvalid), + .o_tready (count_tready) + ); + + // RAM to store window coefficients + ram_to_fifo #( + .DWIDTH (COEFF_WIDTH), + .AWIDTH (WINDOW_SIZE) + ) ram_to_fifo_i ( + .clk (clk), + .reset (rst), + .clear (1'b0), + .config_tdata (m_axis_coeff_tdata), + .config_tlast (m_axis_coeff_tlast), + .config_tvalid (m_axis_coeff_tvalid), + .config_tready (m_axis_coeff_tready), + .i_tdata (count_tdata), + .i_tlast (1'b0), + .i_tvalid (count_tvalid), + .i_tready (count_tready), + .o_tdata (ram_tdata), + .o_tlast (), + .o_tvalid (ram_tvalid), + .o_tready (ram_tready) + ); + + // Real by complex multiplier. This multiplier is configured for signed + // fixed point with 15 fractional bits. For N fractional bits (a right-shift + // by N in the multiplication result), set: + // DROP_TOP_P = (WIDTH_REAL + WIDTH_CPLX - WIDTH_P + 5) - N + mult_rc #( + .WIDTH_REAL (COEFF_WIDTH), + .WIDTH_CPLX (16), + .WIDTH_P (16), + .DROP_TOP_P (6) + ) mult_rc_i ( + .clk (clk), + .reset (rst), + .real_tdata (ram_tdata), + .real_tlast (1'b0), + .real_tvalid (ram_tvalid), + .real_tready (ram_tready), + .cplx_tdata (stream_tdata), + .cplx_tlast (stream_tlast), + .cplx_tvalid (stream_tvalid), + .cplx_tready (stream_tready), + .p_tdata (o_tdata), + .p_tlast (o_tlast), + .p_tvalid (o_tvalid), + .p_tready (o_tready) + ); + +endmodule |