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-rw-r--r--fpga/usrp3/lib/xge/rtl/verilog/fault_sm.v287
1 files changed, 0 insertions, 287 deletions
diff --git a/fpga/usrp3/lib/xge/rtl/verilog/fault_sm.v b/fpga/usrp3/lib/xge/rtl/verilog/fault_sm.v
deleted file mode 100644
index 525459ca3..000000000
--- a/fpga/usrp3/lib/xge/rtl/verilog/fault_sm.v
+++ /dev/null
@@ -1,287 +0,0 @@
-//////////////////////////////////////////////////////////////////////
-//// ////
-//// File name "fault_sm.v" ////
-//// ////
-//// This file is part of the "10GE MAC" project ////
-//// http://www.opencores.org/cores/xge_mac/ ////
-//// ////
-//// Author(s): ////
-//// - A. Tanguay (antanguay@opencores.org) ////
-//// ////
-//////////////////////////////////////////////////////////////////////
-//// ////
-//// Copyright (C) 2008 AUTHORS. All rights reserved. ////
-//// ////
-//// This source file may be used and distributed without ////
-//// restriction provided that this copyright statement is not ////
-//// removed from the file and that any derivative work contains ////
-//// the original copyright notice and the associated disclaimer. ////
-//// ////
-//// This source file is free software; you can redistribute it ////
-//// and/or modify it under the terms of the GNU Lesser General ////
-//// Public License as published by the Free Software Foundation; ////
-//// either version 2.1 of the License, or (at your option) any ////
-//// later version. ////
-//// ////
-//// This source 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 Lesser General Public License for more ////
-//// details. ////
-//// ////
-//// You should have received a copy of the GNU Lesser General ////
-//// Public License along with this source; if not, download it ////
-//// from http://www.opencores.org/lgpl.shtml ////
-//// ////
-//////////////////////////////////////////////////////////////////////
-
-
-`include "defines.v"
-
-module fault_sm(/*AUTOARG*/
- // Outputs
- status_local_fault_crx, status_remote_fault_crx,
- // Inputs
- clk_xgmii_rx, reset_xgmii_rx_n, local_fault_msg_det,
- remote_fault_msg_det
- );
-
-input clk_xgmii_rx;
-input reset_xgmii_rx_n;
-
-input [1:0] local_fault_msg_det;
-input [1:0] remote_fault_msg_det;
-
-output status_local_fault_crx;
-output status_remote_fault_crx;
-
-/*AUTOREG*/
-// Beginning of automatic regs (for this module's undeclared outputs)
-reg status_local_fault_crx;
-reg status_remote_fault_crx;
-// End of automatics
-
-reg [1:0] curr_state;
-
-reg [7:0] col_cnt;
-reg [1:0] fault_sequence;
-reg [1:0] last_seq_type;
-reg [1:0] link_fault;
-reg [2:0] seq_cnt;
-reg [1:0] seq_type;
-
-reg [1:0] seq_add;
-
-/*AUTOWIRE*/
-
-
-parameter [1:0]
- SM_INIT = 2'd0,
- SM_COUNT = 2'd1,
- SM_FAULT = 2'd2,
- SM_NEW_FAULT = 2'd3;
-
-
-always @(/*AS*/local_fault_msg_det or remote_fault_msg_det) begin
-
- //---
- // Fault indication. Indicate remote or local fault
-
- fault_sequence = local_fault_msg_det | remote_fault_msg_det;
-
-
- //---
- // Sequence type, local, remote, or ok
-
- if (|local_fault_msg_det) begin
- seq_type = `LINK_FAULT_LOCAL;
- end
- else if (|remote_fault_msg_det) begin
- seq_type = `LINK_FAULT_REMOTE;
- end
- else begin
- seq_type = `LINK_FAULT_OK;
- end
-
-
- //---
- // Adder for number of faults, if detected in lower 4 lanes and
- // upper 4 lanes, add 2. That's because we process 64-bit at a time
- // instead of typically 32-bit xgmii.
-
- if (|remote_fault_msg_det) begin
- seq_add = remote_fault_msg_det[1] + remote_fault_msg_det[0];
- end
- else begin
- seq_add = local_fault_msg_det[1] + local_fault_msg_det[0];
- end
-
-end
-
-always @(posedge clk_xgmii_rx or negedge reset_xgmii_rx_n) begin
-
- if (reset_xgmii_rx_n == 1'b0) begin
-
-
- status_local_fault_crx <= 1'b0;
- status_remote_fault_crx <= 1'b0;
-
- end
- else begin
-
- //---
- // Status signal to generate local/remote fault interrupts
-
- status_local_fault_crx <= curr_state == SM_FAULT &&
- link_fault == `LINK_FAULT_LOCAL;
-
- status_remote_fault_crx <= curr_state == SM_FAULT &&
- link_fault == `LINK_FAULT_REMOTE;
-
- end
-
-end
-
-always @(posedge clk_xgmii_rx or negedge reset_xgmii_rx_n) begin
-
- if (reset_xgmii_rx_n == 1'b0) begin
-
- curr_state <= SM_INIT;
-
- col_cnt <= 8'b0;
- last_seq_type <= `LINK_FAULT_OK;
- link_fault <= `LINK_FAULT_OK;
- seq_cnt <= 3'b0;
-
- end
- else begin
-
- case (curr_state)
-
- SM_INIT:
- begin
-
- last_seq_type <= seq_type;
-
- if (|fault_sequence) begin
-
- // If a fault is detected, capture the type of
- // fault and start column counter. We need 4 fault
- // messages in 128 columns to accept the fault.
-
- if (fault_sequence[0]) begin
- col_cnt <= 8'd2;
- end
- else begin
- col_cnt <= 8'd1;
- end
- seq_cnt <= {1'b0, seq_add};
- curr_state <= SM_COUNT;
-
- end
- else begin
-
- // If no faults, stay in INIT and clear counters
-
- col_cnt <= 8'b0;
- seq_cnt <= 3'b0;
-
- end
- end
-
- SM_COUNT:
- begin
-
- col_cnt <= col_cnt + 8'd2;
- seq_cnt <= seq_cnt + {1'b0, seq_add};
-
- if (!fault_sequence[0] && col_cnt >= 8'd127) begin
-
- // No new fault in lower lanes and almost
- // reached the 128 columns count, abort fault.
-
- curr_state <= SM_INIT;
-
- end
- else if (col_cnt > 8'd127) begin
-
- // Reached the 128 columns count, abort fault.
-
- curr_state <= SM_INIT;
-
- end
- else if (|fault_sequence) begin
-
- // If fault type has changed, move to NEW_FAULT.
- // If not, after detecting 4 fault messages move to
- // FAULT state.
-
- if (seq_type != last_seq_type) begin
- curr_state <= SM_NEW_FAULT;
- end
- else begin
- if ((seq_cnt + {1'b0, seq_add}) > 3'd3) begin
- col_cnt <= 8'b0;
- link_fault <= seq_type;
- curr_state <= SM_FAULT;
- end
- end
-
- end
- end
-
- SM_FAULT:
- begin
-
- col_cnt <= col_cnt + 8'd2;
-
- if (!fault_sequence[0] && col_cnt >= 8'd127) begin
-
- // No new fault in lower lanes and almost
- // reached the 128 columns count, abort fault.
-
- curr_state <= SM_INIT;
-
- end
- else if (col_cnt > 8'd127) begin
-
- // Reached the 128 columns count, abort fault.
-
- curr_state <= SM_INIT;
-
- end
- else if (|fault_sequence) begin
-
- // Clear the column count each time we see a fault,
- // if fault changes, go no next state.
-
- col_cnt <= 8'd0;
-
- if (seq_type != last_seq_type) begin
- curr_state <= SM_NEW_FAULT;
- end
- end
-
- end
-
- SM_NEW_FAULT:
- begin
-
- // Capture new fault type. Start counters.
-
- col_cnt <= 8'b0;
- last_seq_type <= seq_type;
-
- seq_cnt <= {1'b0, seq_add};
- curr_state <= SM_COUNT;
-
- end
-
- endcase
-
- end
-
-end
-
-endmodule
-
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