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-rw-r--r--usrp2/fpga/eth/mac_txfifo_int.v77
1 files changed, 0 insertions, 77 deletions
diff --git a/usrp2/fpga/eth/mac_txfifo_int.v b/usrp2/fpga/eth/mac_txfifo_int.v
deleted file mode 100644
index 38d8d38fc..000000000
--- a/usrp2/fpga/eth/mac_txfifo_int.v
+++ /dev/null
@@ -1,77 +0,0 @@
-
-module mac_txfifo_int
- (input clk, input rst, input mac_clk,
-
- // To MAC
- input Tx_mac_wa,
- output Tx_mac_wr,
- output [31:0] Tx_mac_data,
- output [1:0] Tx_mac_BE,
- output Tx_mac_sop,
- output Tx_mac_eop,
-
- // To buffer interface
- input [31:0] rd_dat_i,
- output rd_read_o,
- output rd_done_o,
- output rd_error_o,
- input rd_sop_i,
- input rd_eop_i,
-
- // FIFO Status
- output [15:0] fifo_occupied,
- output fifo_full,
- output fifo_empty );
-
- wire empty, full, sfifo_write, sfifo_read;
- wire [33:0] sfifo_in, sfifo_out;
-
- /*
- shortfifo #(.WIDTH(34)) txmac_sfifo
- (.clk(clk),.rst(rst),.clear(0),
- .datain(sfifo_in),.write(sfifo_write),.full(full),
- .dataout(sfifo_out),.read(sfifo_read),.empty(empty));
- */
- fifo_xlnx_512x36_2clk mac_tx_fifo_2clk
- (.rst(rst),
- .wr_clk(clk),.din({2'b0,sfifo_in}),.full(full),.wr_en(sfifo_write),.wr_data_count(fifo_occupied[8:0]),
- .rd_clk(mac_clk),.dout(sfifo_out),.empty(empty),.rd_en(sfifo_read),.rd_data_count() );
- assign fifo_occupied[15:9] = 0;
- assign fifo_full = full;
- assign fifo_empty = empty; // Note empty is in wrong clock domain
-
- // MAC side signals
- // We are allowed to do one more write after we are told the FIFO is full
- // This allows us to register the _wa signal and speed up timing.
-
- reg tx_mac_wa_d1;
- always @(posedge clk)
- tx_mac_wa_d1 <= Tx_mac_wa;
-
- assign sfifo_read = ~empty & tx_mac_wa_d1;
-
- assign Tx_mac_wr = sfifo_read;
- assign Tx_mac_data = sfifo_out[31:0];
- assign Tx_mac_BE = 0; // Since we only deal with packets that are multiples of 32 bits long
- assign Tx_mac_sop = sfifo_out[33];
- assign Tx_mac_eop = sfifo_out[32];
-
-
- // BUFFER side signals
- reg xfer_active;
- always @(posedge clk)
- if(rst)
- xfer_active <= 0;
- else if(rd_eop_i & ~full)
- xfer_active <= 0;
- else if(rd_sop_i)
- xfer_active <= 1;
-
- assign sfifo_in = {rd_sop_i, rd_eop_i, rd_dat_i};
- assign sfifo_write = xfer_active & ~full;
-
- assign rd_read_o = sfifo_write;
- assign rd_done_o = 0; // Always send everything we're given?
- assign rd_error_o = 0; // No possible error situations?
-
-endmodule // mac_txfifo_int