bslathi19/taxi
1
0
Fork 0
mirror of https://github.com/fpganinja/taxi.git synced 2026-08-30 00:24:59 -07:00
Code Issues Packages Projects Releases Wiki Activity

eth: Add CMAC watchdog

Browse Source 
Signed-off-by: Alex Forencich <alex@alexforencich.com>
This commit is contained in:
Alex Forencich
2026-08-14 11:01:13 -07:00
parent 89471d017e
commit 6ac0fa13cd
1 changed files with 38 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

39
src/eth/rtl/us/taxi_eth_mac_100g_us.sv
View File

@@ -346,6 +346,43 @@ wire [127:0] serdes_rxdata[GT_CNT];
wire [15:0] serdes_rxctrl0[GT_CNT];
wire [15:0] serdes_rxctrl1[GT_CNT];
// watchdog
localparam WDT_W = 28;
reg [WDT_W-1:0] wdt_count_reg = '1, wdt_count_next;
logic cmac_rx_reset_req_reg = 1'b0, cmac_rx_reset_req_next;
always_comb begin
wdt_count_next = wdt_count_reg;
cmac_rx_reset_req_next = 1'b0;
if (wdt_count_reg == 0) begin
cmac_rx_reset_req_next = 1'b1;
end else begin
wdt_count_next = wdt_count_reg - 1;
end
if (rx_status) begin
wdt_count_next = '1;
end
end
always_ff @(posedge rx_clk) begin
wdt_count_reg <= wdt_count_next;
if (rx_rst_out) begin
wdt_count_reg <= '1;
end
end
always_ff @(posedge rx_clk or posedge rx_rst_out) begin
if (rx_rst_out) begin
cmac_rx_reset_req_reg <= 1'b0;
end else begin
cmac_rx_reset_req_reg <= cmac_rx_reset_req_next;
end
end
for (genvar n = 0; n < GT_CNT; n = n + 1) begin : ch
localparam HAS_COMMON = n == 0;
@@ -454,7 +491,7 @@ for (genvar n = 0; n < GT_CNT; n = n + 1) begin : ch
*/
.rx_clk_out(rx_clk_int[n]),
.rx_clk_in(rx_clk_int[n]),
.rx_rst_in(rx_rst_in),
.rx_rst_in(rx_rst_in || cmac_rx_reset_req_reg),
.rx_rst_out(rx_rst_int[n]),
.tx_clk_out(tx_clk_int[n]),
.tx_clk_in(tx_clk),