Removed copy of FPGA source files.

1 files changed, 0 insertions, 197 deletions

diff --git a/fpga/usrp2/sdr_lib/rx_control.v b/fpga/usrp2/sdr_lib/rx_control.v
deleted file mode 100644
index 12f411ffe..000000000
--- a/fpga/usrp2/sdr_lib/rx_control.v
+++ /dev/null
@@ -1,197 +0,0 @@
-//
-// Copyright 2011 Ettus Research LLC
-//
-// 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/>.
-//
-
-
-`define DSP_CORE_RX_BASE 160
-
-module rx_control
-  #(parameter FIFOSIZE = 10)
-    (input clk, input rst,
-     input set_stb, input [7:0] set_addr, input [31:0] set_data,
-     
-     input [31:0] master_time,
-     output overrun,
-     
-     // To FIFO interface of Buffer Pool
-     output [31:0] wr_dat_o,
-     output [3:0] wr_flags_o,
-     input wr_ready_i,
-     output wr_ready_o,
-
-     // From DSP Core
-     input [31:0] sample,
-     output run,
-     input strobe,
-
-     // FIFO Levels
-     output [15:0] fifo_occupied,
-     output fifo_full,
-     output fifo_empty,
-     
-     // Debug
-     output [31:0] debug_rx
-     );
-
-   wire [31:0] 	   new_time, new_command;
-   wire 	   sc_pre1, clear_overrun;
-   wire [31:0] 	   rcvtime_pre;
-   reg [31:0] 	   rcvtime;
-   wire [8:0] 	   lines_per_frame;
-   wire [20:0] 	   numlines;
-   wire 	   send_imm_pre, chain_pre;
-   reg 		   send_imm, chain;
-   wire 	   full_ctrl, read_ctrl, empty_ctrl, write_ctrl;
-
-   setting_reg #(.my_addr(`DSP_CORE_RX_BASE+3)) sr_3
-     (.clk(clk),.rst(rst),.strobe(set_stb),.addr(set_addr),
-      .in(set_data),.out(new_time),.changed(sc_pre1));
-   
-   setting_reg #(.my_addr(`DSP_CORE_RX_BASE+4)) sr_4
-     (.clk(clk),.rst(rst),.strobe(set_stb),.addr(set_addr),
-      .in(set_data),.out(new_command),.changed());
-
-   setting_reg #(.my_addr(`DSP_CORE_RX_BASE+5)) sr_5
-     (.clk(clk),.rst(rst),.strobe(set_stb),.addr(set_addr),
-      .in(set_data),.out(),.changed(clear_overrun));
-
-   reg 	       sc_pre2;
-   always @(posedge clk)
-     sc_pre2 <= sc_pre1;
-   assign      write_ctrl = sc_pre1 & ~sc_pre2;
-   
-   shortfifo #(.WIDTH(64)) commandfifo
-     (.clk(clk),.rst(rst),.clear(clear_overrun),
-      .datain({new_command,new_time}), .write(write_ctrl), .full(full_ctrl),
-      .dataout({send_imm_pre,chain_pre,numlines,lines_per_frame,rcvtime_pre}), 
-      .read(read_ctrl), .empty(empty_ctrl) );
-
-   // Buffer interface to internal FIFO
-   wire        have_space, write;
-   wire [35:0] fifo_line;
-   
-   // Internal FIFO, size 9 is 2K, size 10 is 4K
-   fifo_cascade #(.WIDTH(36),.SIZE(FIFOSIZE)) rxfifo
-     (.clk(clk),.reset(rst),.clear(clear_overrun),
-      .datain(fifo_line), .src_rdy_i(write), .dst_rdy_o(have_space),
-      .dataout({wr_flags_o,wr_dat_o}), .src_rdy_o(wr_ready_o), .dst_rdy_i(wr_ready_i),
-      .space(),.occupied(fifo_occupied) );
-   assign      fifo_full = ~have_space;
-   assign      fifo_empty = ~wr_ready_o;
-
-   // Internal FIFO to DSP interface
-   reg [22:0] lines_left;
-   reg [8:0]  lines_left_frame;
-   localparam IBS_IDLE = 0;
-   localparam IBS_WAITING = 1;
-   localparam IBS_FIRSTLINE = 2;
-   localparam IBS_RUNNING = 3;
-   localparam IBS_OVERRUN = 4;
-   
-   reg [2:0] ibs_state;
-  
-   wire [32:0] delta_time = {1'b0,rcvtime}-{1'b0,master_time};
-   wire        too_late = (delta_time[32:31] == 2'b11) & ~send_imm;
-   wire        go_now = send_imm | ( master_time == rcvtime );
- 
-   always @(posedge clk)
-     if(rst)
-       begin
-	  ibs_state <= IBS_IDLE;
-	  lines_left <= 0;
-	  lines_left_frame <= 0;
-	  rcvtime <= 0;
-	  send_imm <= 0;
-	  chain <= 0;
-       end
-     else
-       if(clear_overrun)
-	 begin
-	  ibs_state <= IBS_IDLE;
-	  lines_left <= 0;
-	  lines_left_frame <= 0;
-	  rcvtime <= 0;
-	  send_imm <= 0;
-	  chain <= 0;
-	 end
-       else 
-	 case(ibs_state)
-	   IBS_IDLE :
-	     if(~empty_ctrl)
-	       begin
-		  lines_left <= numlines;
-		  lines_left_frame <= lines_per_frame;
-		  rcvtime <= rcvtime_pre;
-		  ibs_state <= IBS_WAITING;
-		  send_imm <= send_imm_pre;
-		  chain <= chain_pre;
-	       end
-	   IBS_WAITING :
-	     if(go_now)
-	       ibs_state <= IBS_FIRSTLINE;
-	     else if(too_late)
-	       ibs_state <= IBS_OVERRUN;
-	   IBS_FIRSTLINE :
-	     if(~have_space | strobe)
-	       ibs_state <= IBS_OVERRUN;
-	     else
-	       ibs_state <= IBS_RUNNING;
-	   IBS_RUNNING :
-	     if(strobe)
-	       if(~have_space)
-		 ibs_state <= IBS_OVERRUN;
-	       else
-		 begin
-		    lines_left <= lines_left - 1;
-		    if(lines_left == 1)
-		      if(~chain)
-			ibs_state <= IBS_IDLE;
-		      else if(empty_ctrl)
-			ibs_state <= IBS_OVERRUN;
-		      else
-			begin
-			   lines_left <= numlines;
-			   lines_left_frame <= lines_per_frame;
-			   rcvtime <= rcvtime_pre;
-			   ibs_state <= IBS_FIRSTLINE;
-			   send_imm <= send_imm_pre;
-			   chain <= chain_pre;
-			end
-		    else if(lines_left_frame == 1)
-		      begin
-			 lines_left_frame <= lines_per_frame;
-			 ibs_state <= IBS_FIRSTLINE;
-		      end
-		    else
-		      lines_left_frame <= lines_left_frame - 1;
-		 end // else: !if(~have_space)
-	 endcase // case(ibs_state)
-   
-   assign fifo_line = (ibs_state == IBS_FIRSTLINE) ? {2'b0,1'b0,1'b1,master_time} :
-		      {2'b0,((lines_left==1)|(lines_left_frame==1)),1'b0,sample};
-   
-   assign write = ((ibs_state == IBS_FIRSTLINE) | strobe) & have_space;  // & (ibs_state == IBS_RUNNING) should strobe only when running
-   assign overrun = (ibs_state == IBS_OVERRUN);
-   assign run = (ibs_state == IBS_RUNNING) | (ibs_state == IBS_FIRSTLINE);
-   assign read_ctrl = ( (ibs_state == IBS_IDLE) | 
-			((ibs_state == IBS_RUNNING) & strobe & have_space & (lines_left==1) & chain) )
-	  & ~empty_ctrl;
-   
-   assign debug_rx = { 8'd0,
-		       1'd0, send_imm, chain, wr_ready_i,wr_ready_o, 2'b0, run,
-		       write,have_space,wr_flags_o[1:0],write_ctrl,full_ctrl,read_ctrl,empty_ctrl,
-		       sc_pre1, clear_overrun, go_now, too_late, overrun, ibs_state[2:0] };
-endmodule // rx_control