aboutsummaryrefslogtreecommitdiffstats
path: root/fpga/usrp3/lib/zynq_fifo
diff options
context:
space:
mode:
Diffstat (limited to 'fpga/usrp3/lib/zynq_fifo')
-rw-r--r--fpga/usrp3/lib/zynq_fifo/.gitignore2
-rw-r--r--fpga/usrp3/lib/zynq_fifo/Makefile.srcs15
-rw-r--r--fpga/usrp3/lib/zynq_fifo/zf_arbiter.v199
-rw-r--r--fpga/usrp3/lib/zynq_fifo/zf_host_to_stream.v139
-rw-r--r--fpga/usrp3/lib/zynq_fifo/zf_slave_readback.v91
-rw-r--r--fpga/usrp3/lib/zynq_fifo/zf_slave_settings.v95
-rw-r--r--fpga/usrp3/lib/zynq_fifo/zf_stream_to_host.v149
-rw-r--r--fpga/usrp3/lib/zynq_fifo/zynq_fifo_top.v401
8 files changed, 0 insertions, 1091 deletions
diff --git a/fpga/usrp3/lib/zynq_fifo/.gitignore b/fpga/usrp3/lib/zynq_fifo/.gitignore
deleted file mode 100644
index 40aef90fe..000000000
--- a/fpga/usrp3/lib/zynq_fifo/.gitignore
+++ /dev/null
@@ -1,2 +0,0 @@
-/*.exe
-/*.vcd
diff --git a/fpga/usrp3/lib/zynq_fifo/Makefile.srcs b/fpga/usrp3/lib/zynq_fifo/Makefile.srcs
deleted file mode 100644
index 0a63d1627..000000000
--- a/fpga/usrp3/lib/zynq_fifo/Makefile.srcs
+++ /dev/null
@@ -1,15 +0,0 @@
-#
-# Copyright 2012 Ettus Research LLC
-#
-
-##################################################
-# ZYNQ FIFO interface sources
-##################################################
-ZYNQ_FIFO_SRCS = $(abspath $(addprefix $(BASE_DIR)/../lib/zynq_fifo/, \
-zf_arbiter.v \
-zf_stream_to_host.v \
-zf_host_to_stream.v \
-zf_slave_readback.v \
-zf_slave_settings.v \
-zynq_fifo_top.v \
-))
diff --git a/fpga/usrp3/lib/zynq_fifo/zf_arbiter.v b/fpga/usrp3/lib/zynq_fifo/zf_arbiter.v
deleted file mode 100644
index 3ee8770ec..000000000
--- a/fpga/usrp3/lib/zynq_fifo/zf_arbiter.v
+++ /dev/null
@@ -1,199 +0,0 @@
-//////////////////////////////////////////////////////////////////////////////////
-// Copyright Ettus Research LLC
-// The ZYNQ FIFO configuration arbiter:
-// - holds configuration memory addresses
-// - setting and readback for slave state machines
-// - stream of memory addresses for master state machines
-//////////////////////////////////////////////////////////////////////////////////
-
-
-module zf_arbiter
-#(
- parameter STREAMS_WIDTH = 2,
- parameter CMDFIFO_DEPTH = 4,
- parameter PAGE_WIDTH = 16
-)
-(
- input clk,
- input rst,
-
- //------------------------------------------------------------------
- //-- settings interface
- //------------------------------------------------------------------
- input [31:0] set_addr,
- input [31:0] set_data,
- input set_stb,
-
- //------------------------------------------------------------------
- //-- readback interface
- //------------------------------------------------------------------
- input [31:0] rb_addr,
- output [31:0] rb_data,
- input rb_stb,
-
- //------------------------------------------------------------------
- //-- fifo interactive interface
- //------------------------------------------------------------------
- output [71:0] cmd_tdata,
- output cmd_tvalid,
- input cmd_tready,
- input [7:0] sts_tdata,
- input sts_tvalid,
- output sts_tready,
-
- //------------------------------------------------------------------
- //-- which stream to process? externally provided
- //------------------------------------------------------------------
- input [STREAMS_WIDTH-1:0] ext_stream,
- input stream_valid,
-
- output [31:0] debug
-);
-
-////////////////////////////////////////////////////////////////////////
-///////////////////////////// Begin R T L //////////////////////////////
-////////////////////////////////////////////////////////////////////////
-
- localparam NUM_STREAMS = (1 << STREAMS_WIDTH);
-
- reg [STREAMS_WIDTH-1:0] which_stream;
-
- //readback mux assignment
- reg [31:0] rb_data_i [NUM_STREAMS-1:0];
- assign rb_data = rb_data_i[rb_addr[STREAMS_WIDTH+4:5]];
-
- //cmd + sts fifo mux signals
- wire [72:0] cmd_data_i [NUM_STREAMS-1:0];
- assign cmd_tdata = cmd_data_i[which_stream];
- wire cmd_tvalid_i [NUM_STREAMS-1:0];
- wire sts_tready_i [NUM_STREAMS-1:0];
-
- ////////////////////////////////////////////////////////////////////
- // state machine for driving fifo arbitration
- ////////////////////////////////////////////////////////////////////
- localparam STATE_SET_WHICH_STREAM = 0;
- localparam STATE_ASSERT_DO_CMD = 1;
- localparam STATE_ASSERT_DO_STS = 2;
- localparam STATE_SOME_IDLE = 3;
-
- reg [1:0] state;
-
- always @(posedge clk) begin
- if (rst) begin
- state <= STATE_SET_WHICH_STREAM;
- which_stream <= 0;
- end
- else case (state)
-
- STATE_SET_WHICH_STREAM: begin
- if (cmd_tvalid_i[ext_stream]) state <= STATE_ASSERT_DO_CMD;
- which_stream <= ext_stream;
- end
-
- STATE_ASSERT_DO_CMD: begin
- if (cmd_tvalid && cmd_tready) state <= STATE_ASSERT_DO_STS;
- end
-
- STATE_ASSERT_DO_STS: begin
- if (sts_tvalid && sts_tready) state <= STATE_SOME_IDLE;
- end
-
- STATE_SOME_IDLE: begin
- state <= STATE_SET_WHICH_STREAM;
- end
-
- default: state <= STATE_SET_WHICH_STREAM;
-
- endcase //state
- end
-
- ////////////////////////////////////////////////////////////////////
- // memory map + fifos for the host control/status
- ////////////////////////////////////////////////////////////////////
-
- wire do_cmd = (state == STATE_ASSERT_DO_CMD);
- wire do_sts = (state == STATE_ASSERT_DO_STS);
-
- assign cmd_tvalid = do_cmd && cmd_tvalid_i[which_stream];
- assign sts_tready = do_sts && sts_tready_i[which_stream];
-
- genvar i;
- generate
- for (i=0; i < NUM_STREAMS; i=i+1) begin : stream_circuit
-
- wire [PAGE_WIDTH-3:0] set_addr32 = set_addr[PAGE_WIDTH-1:2];
- wire write_clear = set_stb && (set_addr32 == (0 + i*8));
- wire write_addr = set_stb && (set_addr32 == (1 + i*8));
- wire write_size = set_stb && (set_addr32 == (2 + i*8));
- wire write_sts_rdy = set_stb && (set_addr32 == (3 + i*8));
- wire write_sts = set_stb && (set_addr32 == (4 + i*8));
-
- wire [PAGE_WIDTH-3:0] rb_addr32 = rb_addr[PAGE_WIDTH-1:2];
- wire read_sig = (rb_addr32 == (0 + i*8));
- wire read_status = (rb_addr32 == (4 + i*8));
- wire read_sts_occupied = (rb_addr32 == (5 + i*8));
- wire read_cmd_addr_space = (rb_addr32 == (6 + i*8));
- wire read_cmd_size_space = (rb_addr32 == (7 + i*8));
-
- wire [15:0] sts_occupied, cmd_addr_space, cmd_size_space;
- wire [7:0] sts_readback;
-
- wire [15:0] this_stream = i;
- always @* begin
- if (read_sig) rb_data_i[i] <= {16'hACE0, this_stream};
- else if (read_status) rb_data_i[i] <= {24'b0, sts_readback};
- else if (read_sts_occupied) rb_data_i[i] <= {16'b0, sts_occupied};
- else if (read_cmd_addr_space) rb_data_i[i] <= {16'b0, cmd_addr_space};
- else if (read_cmd_size_space) rb_data_i[i] <= {16'b0, cmd_size_space};
- else rb_data_i[i] <= 32'h12345678;
- end
-
- wire [31:0] cmd_addr, cmd_size;
- wire cmd_addr_tvalid, cmd_size_tvalid;
- assign cmd_data_i[i][32+39:32+36] = 4'b0; //reserved - 0?
- assign cmd_data_i[i][32+35:64] = i[3:0]; //tag
- assign cmd_data_i[i][63:32] = cmd_addr;
- assign cmd_data_i[i][31] = 1'b0; //DRE ReAlignment Request
- assign cmd_data_i[i][30] = 1'b1; //always EOF for tlast stream
- assign cmd_data_i[i][29:24] = 6'b0; //DRE Stream Alignment
- assign cmd_data_i[i][23] = 1'b0; //reserved - 0?
- assign cmd_data_i[i][22:0] = cmd_size[22:0];
-
- axi_fifo #(.WIDTH(32), .SIZE(CMDFIFO_DEPTH)) crl_addr_fifo
- (
- .clk(clk), .reset(rst), .clear(write_clear),
- .i_tdata(set_data), .i_tvalid(write_addr), .i_tready(), .space(cmd_addr_space),
- .o_tdata(cmd_addr), .o_tvalid(cmd_addr_tvalid), .o_tready(cmd_tready && do_cmd && (which_stream == i)), .occupied()
- );
-
- axi_fifo #(.WIDTH(32), .SIZE(CMDFIFO_DEPTH)) crl_size_fifo
- (
- .clk(clk), .reset(rst), .clear(write_clear),
- .i_tdata(set_data), .i_tvalid(write_size), .i_tready(), .space(cmd_size_space),
- .o_tdata(cmd_size), .o_tvalid(cmd_size_tvalid), .o_tready(cmd_tready && do_cmd && (which_stream == i)), .occupied()
- );
-
- assign cmd_tvalid_i[i] = cmd_addr_tvalid && cmd_size_tvalid && stream_valid;
-
- wire dm_sts_tvalid = sts_tvalid && do_sts && (which_stream == i);
-
- axi_fifo #(.WIDTH(8), .SIZE(CMDFIFO_DEPTH)) sts_fifo
- (
- .clk(clk), .reset(rst), .clear(),
- .i_tdata((write_sts)?set_data[7:0]:sts_tdata), .i_tvalid(dm_sts_tvalid || write_sts), .i_tready(sts_tready_i[i]), .space(),
- .o_tdata(sts_readback), .o_tvalid(), .o_tready(write_sts_rdy), .occupied(sts_occupied)
- );
-
- end
- endgenerate
-
- assign debug[1:0] = state;
- assign debug[4] = cmd_tvalid;
- assign debug[5] = cmd_tready;
- assign debug[6] = sts_tvalid;
- assign debug[7] = sts_tready;
- assign debug[8] = ext_stream;
- assign debug[9] = which_stream;
- assign debug[15] = rb_addr[STREAMS_WIDTH+4:5];
-
-endmodule //zf_arbiter
diff --git a/fpga/usrp3/lib/zynq_fifo/zf_host_to_stream.v b/fpga/usrp3/lib/zynq_fifo/zf_host_to_stream.v
deleted file mode 100644
index d7ecad158..000000000
--- a/fpga/usrp3/lib/zynq_fifo/zf_host_to_stream.v
+++ /dev/null
@@ -1,139 +0,0 @@
-//////////////////////////////////////////////////////////////////////////////////
-// Copyright Ettus Research LLC
-// The ZYNQ FIFO - read DDR and write to FIFO:
-// - implements read state machine for AXI master on DDR
-// - provides output fifos to external fabric
-//////////////////////////////////////////////////////////////////////////////////
-
-
-module zf_host_to_stream
-#(
- parameter PROT = 3'b010 //data, non-secure, unpriv
-)
-(
- input clk,
- input rst,
- input enb,
-
- //------------------------------------------------------------------
- //-- DDR read signals - master
- //------------------------------------------------------------------
- output [31:0] AXI_ARADDR,
- output [2:0] AXI_ARPROT,
- output AXI_ARVALID,
- input AXI_ARREADY,
- input [63:0] AXI_RDATA,
- input [1:0] AXI_RRESP,
- input AXI_RVALID,
- output AXI_RREADY,
-
- //------------------------------------------------------------------
- // FIFO streaming interfaces
- //------------------------------------------------------------------
- output [63:0] o_tdata,
- output o_tlast,
- output o_tvalid,
- input o_tready,
-
- //------------------------------------------------------------------
- // configuration interface
- //------------------------------------------------------------------
- input [31:0] mem_addr,
- input mem_valid,
- output mem_ack,
-
- output [31:0] debug
-);
-
-////////////////////////////////////////////////////////////////////////
-///////////////////////////// Begin R T L //////////////////////////////
-////////////////////////////////////////////////////////////////////////
-
-
- localparam STATE_WAIT_MEM = 0;
- localparam STATE_WRITE_ADDR = 1;
- localparam STATE_READ_DATA = 2;
- localparam STATE_WRITE_LINE = 3;
- localparam STATE_DONE = 4;
-
- reg [31:0] base_addr;
- reg [63:0] line;
- reg [15:0] line32_count;
- reg first_line;
-
- reg [2:0] state;
- always @(posedge clk) begin
- if (rst) begin
- state <= STATE_WAIT_MEM;
- base_addr <= 0;
- line <= 0;
- line32_count <= 0;
- first_line <= 1;
- end
- else if (enb) case (state)
- STATE_WAIT_MEM: begin
- if (mem_valid) begin
- state <= STATE_WRITE_ADDR;
- end
- base_addr <= mem_addr;
- first_line <= 1;
- end
-
- STATE_WRITE_ADDR: begin
- if (AXI_ARVALID && AXI_ARREADY) begin
- state <= STATE_READ_DATA;
- end
- end
-
- STATE_READ_DATA: begin
- if (AXI_RVALID && AXI_RREADY) begin
- line <= AXI_RDATA;
- state <= STATE_WRITE_LINE;
- if (first_line) begin
- //round up to multiple of 64 minus one line
- //Note! words32 are swapped here, inspect lower for length
- line32_count <= AXI_RDATA[15:0] - 16'b1;
- first_line <= 0;
- end
- end
- end
-
- STATE_WRITE_LINE: begin
- if (o_tvalid && o_tready) begin
- if (o_tlast) state <= STATE_DONE;
- else state <= STATE_WRITE_ADDR;
- base_addr <= base_addr + 32'h8;
- line32_count <= line32_count - 16'h2;
- end
- end
-
- STATE_DONE: begin
- state <= STATE_WAIT_MEM;
- end
-
- default: state <= STATE_WAIT_MEM;
-
- endcase //state
- end
-
- assign o_tdata = {line[31:0], line[63:32]};
- assign o_tlast = (line32_count[15:1] == 15'b0); //ignore low bit
- assign o_tvalid = (state == STATE_WRITE_LINE);
- assign mem_ack = (state == STATE_DONE);
-
- //the master read address always comes from the reg
- assign AXI_ARADDR = base_addr;
- assign AXI_ARVALID = (state == STATE_WRITE_ADDR);
- assign AXI_RREADY = (state == STATE_READ_DATA);
- assign AXI_ARPROT = PROT;
-
- assign debug[2:0] = state;
- assign debug[3] = first_line;
- assign debug[4] = mem_valid;
- assign debug[5] = mem_ack;
- assign debug[6] = AXI_ARVALID;
- assign debug[7] = AXI_ARREADY;
- assign debug[8] = AXI_RVALID;
- assign debug[9] = AXI_RREADY;
-
-endmodule //zf_host_to_stream
diff --git a/fpga/usrp3/lib/zynq_fifo/zf_slave_readback.v b/fpga/usrp3/lib/zynq_fifo/zf_slave_readback.v
deleted file mode 100644
index f7e25deb2..000000000
--- a/fpga/usrp3/lib/zynq_fifo/zf_slave_readback.v
+++ /dev/null
@@ -1,91 +0,0 @@
-//////////////////////////////////////////////////////////////////////////////////
-// Copyright Ettus Research LLC
-// The ZYNQ FIFO slave readback:
-// - implements read state machine for 32-bit addressable AXI slave
-// - provides readback for state of per-stream fifo pointers
-//////////////////////////////////////////////////////////////////////////////////
-
-
-module zf_slave_readback
-#(
- parameter CONFIG_BASE = 32'h40000000
-)
-(
- input clk,
- input rst,
-
- //------------------------------------------------------------------
- //-- control read signals - slave
- //------------------------------------------------------------------
- input [31:0] AXI_ARADDR,
- input AXI_ARVALID,
- output AXI_ARREADY,
- output [31:0] AXI_RDATA,
- output [1:0] AXI_RRESP,
- output AXI_RVALID,
- input AXI_RREADY,
-
- //------------------------------------------------------------------
- // readback interface
- //------------------------------------------------------------------
- output reg [31:0] addr,
- input [31:0] data,
- output strobe,
-
- output [31:0] debug
-);
-
-////////////////////////////////////////////////////////////////////////
-///////////////////////////// Begin R T L //////////////////////////////
-////////////////////////////////////////////////////////////////////////
-
- //------------------------------------------------------------------
- // Control read state machine responds to AXI control reads
- // Used for reading back the state of the various FIFOs
- //------------------------------------------------------------------
- localparam STATE_ADDR = 0;
- localparam STATE_READ = 1;
- localparam STATE_DATA = 2;
-
- reg [3:0] state;
-
- always @(posedge clk) begin
- if (rst) begin
- state <= STATE_ADDR;
- addr <= 0;
- end
- else case (state)
-
- STATE_ADDR: begin
- if (AXI_ARVALID && AXI_ARREADY) begin
- state <= STATE_READ;
- addr <= (AXI_ARADDR - CONFIG_BASE);
- end
- end
-
- STATE_READ: begin
- state <= STATE_DATA;
- end
-
- STATE_DATA: begin
- if (AXI_RVALID && AXI_RREADY) begin
- state <= STATE_ADDR;
- end
- end
-
- default: state <= STATE_ADDR;
-
- endcase //state
- end
-
- assign strobe = AXI_RVALID && AXI_RREADY;
-
- //readback data
- assign AXI_RDATA = data;
- //only acking address reads from the wait state
- assign AXI_ARREADY = (state == STATE_ADDR);
- //when to release outputs from the slave
- assign AXI_RVALID = (state == STATE_DATA);
- assign AXI_RRESP = 0;
-
-endmodule //zf_slave_readback
diff --git a/fpga/usrp3/lib/zynq_fifo/zf_slave_settings.v b/fpga/usrp3/lib/zynq_fifo/zf_slave_settings.v
deleted file mode 100644
index 026845682..000000000
--- a/fpga/usrp3/lib/zynq_fifo/zf_slave_settings.v
+++ /dev/null
@@ -1,95 +0,0 @@
-//////////////////////////////////////////////////////////////////////////////////
-// Copyright Ettus Research LLC
-// The ZYNQ FIFO slave settings:
-// - implements write state machine for 32-bit addressable AXI slave
-// - provides settings for state of per-stream fifo pointers
-// - implements configuration of FIFO's physical DDR addresses
-//////////////////////////////////////////////////////////////////////////////////
-
-
-module zf_slave_settings
-#(
- parameter CONFIG_BASE = 32'h40000000
-)
-(
- input clk,
- input rst,
-
- //------------------------------------------------------------------
- //-- control write signals - slave
- //------------------------------------------------------------------
- input [31:0] AXI_AWADDR,
- input AXI_AWVALID,
- output AXI_AWREADY,
- input [31:0] AXI_WDATA,
- input [3:0] AXI_WSTRB,
- input AXI_WVALID,
- output AXI_WREADY,
- output [1:0] AXI_BRESP,
- output AXI_BVALID,
- input AXI_BREADY,
-
- //------------------------------------------------------------------
- // settings interface
- //------------------------------------------------------------------
- output reg [31:0] addr,
- output reg [31:0] data,
- output strobe,
-
- output [31:0] debug
-);
-
-////////////////////////////////////////////////////////////////////////
-///////////////////////////// Begin R T L //////////////////////////////
-////////////////////////////////////////////////////////////////////////
-
- //------------------------------------------------------------------
- // Control write state machine responds to AXI control writes
- // Used for setting the state of the various FIFOs
- //------------------------------------------------------------------
- localparam STATE_ADDR = 0;
- localparam STATE_DATA = 1;
- localparam STATE_WRITE = 2;
-
- reg [1:0] state;
-
- always @(posedge clk) begin
- if (rst) begin
- state <= STATE_ADDR;
- addr <= 0;
- data <= 0;
- end
- else case (state)
-
- STATE_ADDR: begin
- if (AXI_AWVALID && AXI_AWREADY) begin
- addr <= (AXI_AWADDR - CONFIG_BASE);
- state <= STATE_DATA;
- end
- end
-
- STATE_DATA: begin
- if (AXI_WVALID && AXI_WREADY) begin
- data <= AXI_WDATA;
- state <= STATE_WRITE;
- end
- end
-
- STATE_WRITE: begin
- state <= STATE_ADDR;
- end
-
- default: state <= STATE_ADDR;
-
- endcase //state
- end
-
- assign strobe = (state == STATE_WRITE);
-
- //assign to slave write
- assign AXI_AWREADY = (state == STATE_ADDR);
- assign AXI_WREADY = (state == STATE_DATA);
- assign AXI_BRESP = 0;
- assign AXI_BVALID = AXI_BREADY; //FIXME - we can choose not to assert valid
-
-endmodule //zf_slave_settings
diff --git a/fpga/usrp3/lib/zynq_fifo/zf_stream_to_host.v b/fpga/usrp3/lib/zynq_fifo/zf_stream_to_host.v
deleted file mode 100644
index 246d43dab..000000000
--- a/fpga/usrp3/lib/zynq_fifo/zf_stream_to_host.v
+++ /dev/null
@@ -1,149 +0,0 @@
-//////////////////////////////////////////////////////////////////////////////////
-// Copyright Ettus Research LLC
-// The ZYNQ FIFO - read FIFO and write to DDR:
-// - implements write state machine for AXI master on DDR
-// - provides input fifos from external fabric
-//////////////////////////////////////////////////////////////////////////////////
-
-
-//This implementation takes many states to do individual
-//64 bit xfers from FIFO to the AXI write master.
-//TODO: use axi 4/full with busts,
-//in this case we should be able to directly connect the fifo
-//to the write lines with much less state machinery.
-
-module zf_stream_to_host
-#(
- parameter PROT = 3'b010, //data, non-secure, unpriv
- parameter STRB = 4'b1111 //write all bytes
-)
-(
- input clk,
- input rst,
- input enb,
-
- //------------------------------------------------------------------
- //-- DDR write signals - master
- //------------------------------------------------------------------
- output [31:0] AXI_AWADDR,
- output [2:0] AXI_AWPROT,
- output AXI_AWVALID,
- input AXI_AWREADY,
- output [63:0] AXI_WDATA,
- output [3:0] AXI_WSTRB,
- output AXI_WVALID,
- input AXI_WREADY,
- input [1:0] AXI_BRESP,
- input AXI_BVALID,
- output AXI_BREADY,
-
- //------------------------------------------------------------------
- // FIFO streaming interfaces
- //------------------------------------------------------------------
- input [63:0] i_tdata,
- input i_tlast,
- input i_tvalid,
- output i_tready,
-
- //------------------------------------------------------------------
- // configuration interface
- //------------------------------------------------------------------
- input [31:0] mem_addr,
- input mem_valid,
- output mem_ack,
-
- output [31:0] debug
-);
-
-////////////////////////////////////////////////////////////////////////
-///////////////////////////// Begin R T L //////////////////////////////
-////////////////////////////////////////////////////////////////////////
-
- localparam STATE_WAIT_MEM = 0;
- localparam STATE_READ_LINE = 1;
- localparam STATE_WRITE_ADDR = 2;
- localparam STATE_WRITE_DATA = 3;
- localparam STATE_WRITE_B = 4;
- localparam STATE_DONE = 5;
-
- reg [31:0] base_addr;
- reg [63:0] line;
- reg last;
-
- reg [2:0] state;
- always @(posedge clk) begin
- if (rst) begin
- state <= STATE_WAIT_MEM;
- base_addr <= 0;
- line <= 0;
- last <= 0;
- end
- else if (enb) case (state)
- STATE_WAIT_MEM: begin
- if (mem_valid) begin
- state <= STATE_READ_LINE;
- end
- base_addr <= mem_addr;
- end
-
- STATE_READ_LINE: begin
- if (i_tvalid && i_tready) begin
- line <= i_tdata;
- last <= i_tlast;
- state <= STATE_WRITE_ADDR;
- end
- end
-
- STATE_WRITE_ADDR: begin
- if (AXI_AWVALID && AXI_AWREADY) begin
- state <= STATE_WRITE_DATA;
- end
- end
-
- STATE_WRITE_DATA: begin
- if (AXI_WVALID && AXI_WREADY) begin
- state <= STATE_WRITE_B;
- end
- end
-
- STATE_WRITE_B: begin
- if (AXI_BREADY && AXI_BVALID) begin//FIXME, slave may not assert valid
- if (last) state <= STATE_DONE;
- else state <= STATE_READ_LINE;
- base_addr <= base_addr + 32'h8;
- end
- end
-
- STATE_DONE: begin
- state <= STATE_WAIT_MEM;
- end
-
- default: state <= STATE_WAIT_MEM;
-
- endcase //state
- end
-
- assign i_tready = (state == STATE_READ_LINE);
- assign mem_ack = (state == STATE_DONE);
-
- //assign to master write
- assign AXI_AWVALID = (state == STATE_WRITE_ADDR);
- assign AXI_WVALID = (state == STATE_WRITE_DATA);
- assign AXI_AWADDR = base_addr;
- assign AXI_WDATA = {line[31:0], line[63:32]};
-
- assign AXI_WSTRB = STRB;
- assign AXI_AWPROT = PROT;
- assign AXI_BREADY = (state == STATE_WRITE_B);
-
- assign debug[2:0] = state;
- assign debug[4] = mem_valid;
- assign debug[5] = mem_ack;
- assign debug[6] = AXI_AWVALID;
- assign debug[7] = AXI_AWREADY;
- assign debug[8] = AXI_WVALID;
- assign debug[9] = AXI_WREADY;
- assign debug[10] = AXI_BVALID;
- assign debug[11] = AXI_BREADY;
-
-endmodule //zf_stream_to_host
diff --git a/fpga/usrp3/lib/zynq_fifo/zynq_fifo_top.v b/fpga/usrp3/lib/zynq_fifo/zynq_fifo_top.v
deleted file mode 100644
index 7b7ffbd16..000000000
--- a/fpga/usrp3/lib/zynq_fifo/zynq_fifo_top.v
+++ /dev/null
@@ -1,401 +0,0 @@
-`timescale 1ns / 1ps
-
-//////////////////////////////////////////////////////////////////////////////////
-// Copyright Ettus Research LLC
-// The ZYNQ FIFO Top:
-// - takes read and write 32-bit addressable AXI slave
-// - takes read and write 64-bit addressable AXI master
-// - drives N input and output AXI stream FIFOs
-//////////////////////////////////////////////////////////////////////////////////
-
-// Mapping:
-// Page0 - stream to host config
-// Page1 - host to stream config
-
-module zynq_fifo_top
-#(
- parameter CONFIG_BASE = 32'h40000000,
- parameter PAGE_WIDTH = 16, //in bytes, must fit widths below
- parameter H2S_STREAMS_WIDTH = 2,
- parameter H2S_CMDFIFO_DEPTH = 4,
- parameter S2H_STREAMS_WIDTH = 2,
- parameter S2H_CMDFIFO_DEPTH = 4,
- parameter PROT = 3'b010 //data, non-secure, unpriv
-)
-(
- input clk,
- input rst,
-
- //------------------------------------------------------------------
- // AXI slave addressable signals - control
- //------------------------------------------------------------------
- //control write signals - slave
- input [31:0] CTL_AXI_AWADDR,
- input CTL_AXI_AWVALID,
- output CTL_AXI_AWREADY,
- input [31:0] CTL_AXI_WDATA,
- input [3:0] CTL_AXI_WSTRB,
- input CTL_AXI_WVALID,
- output CTL_AXI_WREADY,
- output [1:0] CTL_AXI_BRESP,
- output CTL_AXI_BVALID,
- input CTL_AXI_BREADY,
-
- //control read signals - slave
- input [31:0] CTL_AXI_ARADDR,
- input CTL_AXI_ARVALID,
- output CTL_AXI_ARREADY,
- output [31:0] CTL_AXI_RDATA,
- output [1:0] CTL_AXI_RRESP,
- output CTL_AXI_RVALID,
- input CTL_AXI_RREADY,
-
- //------------------------------------------------------------------
- // AXI master addressable signals - DDR access
- //------------------------------------------------------------------
- //memory write signals - master
- output [31:0] DDR_AXI_AWADDR,
- output [2:0] DDR_AXI_AWPROT,
- output DDR_AXI_AWVALID,
- input DDR_AXI_AWREADY,
- output [63:0] DDR_AXI_WDATA,
- output [7:0] DDR_AXI_WSTRB,
- output DDR_AXI_WVALID,
- input DDR_AXI_WREADY,
- input [1:0] DDR_AXI_BRESP,
- input DDR_AXI_BVALID,
- output DDR_AXI_BREADY,
- output [7:0] DDR_AXI_AWLEN,
- output [2:0] DDR_AXI_AWSIZE,
- output [1:0] DDR_AXI_AWBURST,
- output [3:0] DDR_AXI_AWCACHE,
- output DDR_AXI_WLAST,
-
- //memory read signals - master
- output [31:0] DDR_AXI_ARADDR,
- output [2:0] DDR_AXI_ARPROT,
- output DDR_AXI_ARVALID,
- input DDR_AXI_ARREADY,
- input [63:0] DDR_AXI_RDATA,
- input [1:0] DDR_AXI_RRESP,
- input DDR_AXI_RVALID,
- output DDR_AXI_RREADY,
- input DDR_AXI_RLAST,
- output [3:0] DDR_AXI_ARCACHE,
- output [7:0] DDR_AXI_ARLEN,
- output [1:0] DDR_AXI_ARBURST,
- output [2:0] DDR_AXI_ARSIZE,
-
- //------------------------------------------------------------------
- // AXI streams host to stream
- //------------------------------------------------------------------
- output [63:0] h2s_tdata,
- output h2s_tlast,
- output h2s_tvalid,
- input h2s_tready,
-
- //------------------------------------------------------------------
- // AXI streams stream to host
- //------------------------------------------------------------------
- input [63:0] s2h_tdata,
- input s2h_tlast,
- input s2h_tvalid,
- output s2h_tready,
-
- output event_irq,
-
- output [31:0] debug
-);
-
-////////////////////////////////////////////////////////////////////////
-///////////////////////////// Begin R T L //////////////////////////////
-////////////////////////////////////////////////////////////////////////
-
- //interrupt wires
- wire h2s_irq, s2h_irq;
- assign event_irq = h2s_irq | s2h_irq;
-
- wire [31:0] set_addr, set_data;
- wire [31:0] rb_addr, rb_data;
- wire [31:0] rb_data_s2h, rb_data_h2s;
- wire set_stb, set_stb_s2h, set_stb_h2s;
- wire rb_stb, rb_stb_s2h, rb_stb_h2s;
-
- wire [1:0] set_page = set_addr[PAGE_WIDTH+1:PAGE_WIDTH];
- wire [1:0] rb_page = rb_addr[PAGE_WIDTH+1:PAGE_WIDTH];
-
- //each arbiter gets 1 page
- assign set_stb_s2h = set_stb && (set_page == 2'h0);
- assign set_stb_h2s = set_stb && (set_page == 2'h1);
- assign rb_stb_s2h = rb_stb && (rb_page == 2'h0);
- assign rb_stb_h2s = rb_stb && (rb_page == 2'h1);
- assign rb_data = (rb_page == 2'h0)? rb_data_s2h : rb_data_h2s;
-
- //------------------------------------------------------------------
- // configuration slaves
- //------------------------------------------------------------------
- zf_slave_settings #(.CONFIG_BASE(CONFIG_BASE)) zf_slave_settings
- (
- .clk(clk), .rst(rst),
- .AXI_AWADDR(CTL_AXI_AWADDR),
- .AXI_AWVALID(CTL_AXI_AWVALID),
- .AXI_AWREADY(CTL_AXI_AWREADY),
- .AXI_WDATA(CTL_AXI_WDATA),
- .AXI_WSTRB(CTL_AXI_WSTRB),
- .AXI_WVALID(CTL_AXI_WVALID),
- .AXI_WREADY(CTL_AXI_WREADY),
- .AXI_BRESP(CTL_AXI_BRESP),
- .AXI_BVALID(CTL_AXI_BVALID),
- .AXI_BREADY(CTL_AXI_BREADY),
- .addr(set_addr), .data(set_data), .strobe(set_stb),
- .debug()
- );
- zf_slave_readback #(.CONFIG_BASE(CONFIG_BASE)) zf_slave_readback
- (
- .clk(clk), .rst(rst),
- .AXI_ARADDR(CTL_AXI_ARADDR),
- .AXI_ARVALID(CTL_AXI_ARVALID),
- .AXI_ARREADY(CTL_AXI_ARREADY),
- .AXI_RDATA(CTL_AXI_RDATA),
- .AXI_RRESP(CTL_AXI_RRESP),
- .AXI_RVALID(CTL_AXI_RVALID),
- .AXI_RREADY(CTL_AXI_RREADY),
- .addr(rb_addr), .data(rb_data), .strobe(rb_stb),
- .debug()
- );
-
- //------------------------------------------------------------------
- // fifo to ddr
- //------------------------------------------------------------------
- wire [71:0] s2h_cmd_tdata;
- wire [7:0] s2h_sts_tdata;
- wire s2h_cmd_tvalid, s2h_cmd_tready;
- wire s2h_sts_tvalid, s2h_sts_tready;
-
- assign s2h_irq = s2h_sts_tvalid;
-
- //lookup destination
- wire [63:0] s2h_tdata_i0;
- wire s2h_tready_i0, s2h_tvalid_i0, s2h_tlast_i0;
- wire [S2H_STREAMS_WIDTH-1:0] which_stream_s2h;
-
- cvita_dest_lookup #(.DEST_WIDTH(S2H_STREAMS_WIDTH)) s2h_dest_gen
- (
- .clk(clk), .rst(rst),
- .set_stb(set_stb && (set_page == 2'h2)), .set_addr(set_addr[9:2]), .set_data(set_data),
- .i_tdata(s2h_tdata), .i_tlast(s2h_tlast), .i_tvalid(s2h_tvalid), .i_tready(s2h_tready),
- .o_tdata(s2h_tdata_i0), .o_tlast(s2h_tlast_i0), .o_tvalid(s2h_tvalid_i0), .o_tready(s2h_tready_i0),
- .o_tdest(which_stream_s2h)
- );
-
- //only active in cycles between command and tlast
- //this prevents bullshit consumption after tlast
- reg s2h_active;
- always @(posedge clk) begin
- if (rst) s2h_active <= 0;
- else if (s2h_cmd_tvalid && s2h_cmd_tready) s2h_active <= 1;
- else if (s2h_tready_i0 && s2h_tvalid_i0 && s2h_tlast_i0) s2h_active <= 0;
- end
-
- //cut fifo comms when not in active state
- wire [63:0] s2h_tdata_i1;
- wire s2h_tready_i1, s2h_tvalid_i1, s2h_tlast_i1;
- assign s2h_tdata_i1 = s2h_tdata_i0;
- assign s2h_tlast_i1 = s2h_tlast_i0;
- assign s2h_tvalid_i1 = s2h_tvalid_i0 && s2h_active;
- assign s2h_tready_i0 = s2h_tready_i1 && s2h_active;
-
- wire [31:0] s2h_arbiter_debug;
- zf_arbiter #(
- .STREAMS_WIDTH(H2S_STREAMS_WIDTH),
- .CMDFIFO_DEPTH(H2S_CMDFIFO_DEPTH),
- .PAGE_WIDTH(PAGE_WIDTH)
- ) s2h_arbiter
- (
- .clk(clk), .rst(rst),
- .set_addr(set_addr), .set_data(set_data), .set_stb(set_stb_s2h),
- .rb_addr(rb_addr), .rb_data(rb_data_s2h), .rb_stb(rb_stb_s2h),
- .cmd_tdata(s2h_cmd_tdata), .cmd_tvalid(s2h_cmd_tvalid), .cmd_tready(s2h_cmd_tready),
- .sts_tdata(s2h_sts_tdata), .sts_tvalid(s2h_sts_tvalid), .sts_tready(s2h_sts_tready),
- .ext_stream(which_stream_s2h), .stream_valid(s2h_tvalid_i0),
- .debug(s2h_arbiter_debug)
- );
-
- //------------------------------------------------------------------
- // ddr to fifo
- //------------------------------------------------------------------
- wire [71:0] h2s_cmd_tdata;
- wire [7:0] h2s_sts_tdata;
- wire h2s_cmd_tvalid, h2s_cmd_tready;
- wire h2s_sts_tvalid, h2s_sts_tready;
-
- assign h2s_irq = h2s_sts_tvalid;
-
- //simple round robin implementation for checking available packets
- reg [H2S_STREAMS_WIDTH-1:0] which_stream_h2s;
- always @(posedge clk)
- if (rst) which_stream_h2s <= 0;
- else which_stream_h2s <= which_stream_h2s + 1'b1;
-
- wire [31:0] h2s_arbiter_debug;
- zf_arbiter #(
- .STREAMS_WIDTH(S2H_STREAMS_WIDTH),
- .CMDFIFO_DEPTH(S2H_CMDFIFO_DEPTH),
- .PAGE_WIDTH(PAGE_WIDTH)
- ) h2s_arbiter
- (
- .clk(clk), .rst(rst),
- .set_addr(set_addr), .set_data(set_data), .set_stb(set_stb_h2s),
- .rb_addr(rb_addr), .rb_data(rb_data_h2s), .rb_stb(rb_stb_h2s),
- .cmd_tdata(h2s_cmd_tdata), .cmd_tvalid(h2s_cmd_tvalid), .cmd_tready(h2s_cmd_tready),
- .sts_tdata(h2s_sts_tdata), .sts_tvalid(h2s_sts_tvalid), .sts_tready(h2s_sts_tready),
- .ext_stream(which_stream_h2s), .stream_valid(1'b1),
- .debug(h2s_arbiter_debug)
- );
-
- //------------------------------------------------------------------
- // axi_datamover
- //------------------------------------------------------------------
- wire reset_dm = rst;
- axi_datamover_v3_00_a axi_datamover
- (
- //host to stream reset stuff
- .m_axi_mm2s_aclk(clk),
- .m_axi_mm2s_aresetn(!reset_dm),
- .mm2s_halt(1'b0),
- .mm2s_halt_cmplt(),
- .mm2s_err(),
-
- //host to stream command
- .m_axis_mm2s_cmdsts_aclk(clk),
- .m_axis_mm2s_cmdsts_aresetn(!reset_dm),
- .s_axis_mm2s_cmd_tvalid(h2s_cmd_tvalid),
- .s_axis_mm2s_cmd_tready(h2s_cmd_tready),
- .s_axis_mm2s_cmd_tdata(h2s_cmd_tdata),
-
- //host to stream status
- .m_axis_mm2s_sts_tvalid(h2s_sts_tvalid),
- .m_axis_mm2s_sts_tready(h2s_sts_tready),
- .m_axis_mm2s_sts_tdata(h2s_sts_tdata),
- .m_axis_mm2s_sts_tkeep(),
- .m_axis_mm2s_sts_tlast(),
-
- //store and forward - always can post
- .mm2s_allow_addr_req(1'b1),
- .mm2s_addr_req_posted(),
- .mm2s_rd_xfer_cmplt(),
-
- //HP RD connection to DDR
- .m_axi_mm2s_arid(),
- .m_axi_mm2s_araddr(DDR_AXI_ARADDR),
- .m_axi_mm2s_arlen(DDR_AXI_ARLEN),
- .m_axi_mm2s_arsize(DDR_AXI_ARSIZE),
- .m_axi_mm2s_arburst(DDR_AXI_ARBURST),
- .m_axi_mm2s_arprot(DDR_AXI_ARPROT),
- .m_axi_mm2s_arcache(DDR_AXI_ARCACHE),
- .m_axi_mm2s_arvalid(DDR_AXI_ARVALID),
- .m_axi_mm2s_arready(DDR_AXI_ARREADY),
- .m_axi_mm2s_rdata(DDR_AXI_RDATA),
- .m_axi_mm2s_rresp(DDR_AXI_RRESP),
- .m_axi_mm2s_rlast(DDR_AXI_RLAST),
- .m_axi_mm2s_rvalid(DDR_AXI_RVALID),
- .m_axi_mm2s_rready(DDR_AXI_RREADY),
-
- //AXI host to stream connection
- .m_axis_mm2s_tdata({h2s_tdata[31:0], h2s_tdata[63:32]}),
- .m_axis_mm2s_tkeep(), //dont care
- .m_axis_mm2s_tlast(h2s_tlast),
- .m_axis_mm2s_tvalid(h2s_tvalid),
- .m_axis_mm2s_tready(h2s_tready),
-
- //unused debug
- .mm2s_dbg_sel(4'b0),
- .mm2s_dbg_data(),
-
- //stream to host reset stuff
- .m_axi_s2mm_aclk(clk),
- .m_axi_s2mm_aresetn(!reset_dm),
- .s2mm_halt(1'b0),
- .s2mm_halt_cmplt(),
- .s2mm_err(),
-
- //stream to host command
- .m_axis_s2mm_cmdsts_awclk(clk),
- .m_axis_s2mm_cmdsts_aresetn(!reset_dm),
- .s_axis_s2mm_cmd_tvalid(s2h_cmd_tvalid),
- .s_axis_s2mm_cmd_tready(s2h_cmd_tready),
- .s_axis_s2mm_cmd_tdata(s2h_cmd_tdata),
-
- //stream to host status
- .m_axis_s2mm_sts_tvalid(s2h_sts_tvalid),
- .m_axis_s2mm_sts_tready(s2h_sts_tready),
- .m_axis_s2mm_sts_tdata(s2h_sts_tdata),
- .m_axis_s2mm_sts_tkeep(),
- .m_axis_s2mm_sts_tlast(),
-
- //store and forward - always can post
- .s2mm_allow_addr_req(1'b1),
- .s2mm_addr_req_posted(),
- .s2mm_wr_xfer_cmplt(),
- .s2mm_ld_nxt_len(),
- .s2mm_wr_len(),
-
- //HP WR connection to DDR
- .m_axi_s2mm_awid(),
- .m_axi_s2mm_awaddr(DDR_AXI_AWADDR),
- .m_axi_s2mm_awlen(DDR_AXI_AWLEN),
- .m_axi_s2mm_awsize(DDR_AXI_AWSIZE),
- .m_axi_s2mm_awburst(DDR_AXI_AWBURST),
- .m_axi_s2mm_awprot(DDR_AXI_AWPROT),
- .m_axi_s2mm_awcache(DDR_AXI_AWCACHE),
- .m_axi_s2mm_awvalid(DDR_AXI_AWVALID),
- .m_axi_s2mm_awready(DDR_AXI_AWREADY),
- .m_axi_s2mm_wdata(DDR_AXI_WDATA),
- .m_axi_s2mm_wstrb(DDR_AXI_WSTRB),
- .m_axi_s2mm_wlast(DDR_AXI_WLAST),
- .m_axi_s2mm_wvalid(DDR_AXI_WVALID),
- .m_axi_s2mm_wready(DDR_AXI_WREADY),
- .m_axi_s2mm_bresp(DDR_AXI_BRESP),
- .m_axi_s2mm_bvalid(DDR_AXI_BVALID),
- .m_axi_s2mm_bready(DDR_AXI_BREADY),
-
- //AXI stream to host connection
- .s_axis_s2mm_tdata({s2h_tdata_i1[31:0], s2h_tdata_i1[63:32]}),
- .s_axis_s2mm_tkeep(8'hff), //all bytes valid
- .s_axis_s2mm_tlast(s2h_tlast_i1),
- .s_axis_s2mm_tvalid(s2h_tvalid_i1),
- .s_axis_s2mm_tready(s2h_tready_i1),
-
- //unused debug
- .s2mm_dbg_sel(4'b0),
- .s2mm_dbg_data()
- );
-
- //------------------------------------------------------------------
- // chipscope debugs
- //------------------------------------------------------------------
- wire [35:0] CONTROL;
- wire [255:0] DATA;
- wire [7:0] TRIG;
-
- chipscope_icon chipscope_icon(.CONTROL0(CONTROL));
-
- chipscope_ila chipscope_ila
- (
- .CONTROL(CONTROL), .CLK(clk),
- .DATA(DATA), .TRIG0(TRIG)
- );
-
- assign DATA[255:256-64] = {set_addr, set_data};
- assign DATA[79:76] = which_stream_s2h;
- assign DATA[75:72] = {1'b0, s2h_tlast, s2h_tvalid, s2h_tready};
- assign DATA[71:68] = {1'b0, s2h_tlast_i0, s2h_tvalid_i0, s2h_tready_i0};
- assign DATA[67:64] = {1'b0, s2h_tlast_i1, s2h_tvalid_i1, s2h_tready_i1};
- assign DATA[63:0] = s2h_tdata_i1;
-
- assign TRIG = {
- set_stb, s2h_tlast_i0, s2h_tvalid_i0, s2h_tready_i0,
- (set_stb && (set_page == 2'h2)), s2h_tlast_i1, s2h_tvalid_i1, s2h_tready_i1
- };
-
-endmodule //zynq_fifo_top
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-20 15:22:42 +0000