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Detect bad XGMII encodings in PHY TX

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This commit is contained in:
Alex Forencich 2021-10-16 00:50:48 -07:00
parent 3b2e6874d8
commit 247aeae845
3 changed files with 39 additions and 3 deletions
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2
rtl/eth_phy_10g.v
View File

@ -69,6 +69,7 @@ module eth_phy_10g #
/*
* Status
*/
output wire tx_bad_block,
output wire [6:0] rx_error_count,
output wire rx_bad_block,
output wire rx_sequence_error,
@ -126,6 +127,7 @@ eth_phy_10g_tx_inst (
.xgmii_txc(xgmii_txc),
.serdes_tx_data(serdes_tx_data),
.serdes_tx_hdr(serdes_tx_hdr),
.tx_bad_block(tx_bad_block),
.tx_prbs31_enable(tx_prbs31_enable)
);

8
rtl/eth_phy_10g_tx.v
View File

@ -55,6 +55,11 @@ module eth_phy_10g_tx #
output wire [DATA_WIDTH-1:0] serdes_tx_data,
output wire [HDR_WIDTH-1:0] serdes_tx_hdr,
/*
* Status
*/
output wire tx_bad_block,
/*
* Configuration
*/
@ -93,7 +98,8 @@ xgmii_baser_enc_inst (
.xgmii_txd(xgmii_txd),
.xgmii_txc(xgmii_txc),
.encoded_tx_data(encoded_tx_data),
.encoded_tx_hdr(encoded_tx_hdr)
.encoded_tx_hdr(encoded_tx_hdr),
.tx_bad_block(tx_bad_block)
);
eth_phy_10g_tx_if #(

32
rtl/xgmii_baser_enc_64.v
View File

@ -49,7 +49,12 @@ module xgmii_baser_enc_64 #
* 10GBASE-R encoded interface
*/
output wire [DATA_WIDTH-1:0] encoded_tx_data,
output wire [HDR_WIDTH-1:0] encoded_tx_hdr
output wire [HDR_WIDTH-1:0] encoded_tx_hdr,
/*
* Status
*/
output wire tx_bad_block
);
// bus width assertions
@ -127,13 +132,17 @@ reg [CTRL_WIDTH-1:0] encode_err;
reg [DATA_WIDTH-1:0] encoded_tx_data_reg = {DATA_WIDTH{1'b0}}, encoded_tx_data_next;
reg [HDR_WIDTH-1:0] encoded_tx_hdr_reg = {HDR_WIDTH{1'b0}}, encoded_tx_hdr_next;
reg tx_bad_block_reg = 1'b0, tx_bad_block_next;
assign encoded_tx_data = encoded_tx_data_reg;
assign encoded_tx_hdr = encoded_tx_hdr_reg;
assign tx_bad_block = tx_bad_block_reg;
integer i;
always @* begin
tx_bad_block_next = 1'b0;
for (i = 0; i < CTRL_WIDTH; i = i + 1) begin
if (xgmii_txc[i]) begin
@ -190,55 +199,72 @@ always @* begin
if (xgmii_txc == 8'h00) begin
encoded_tx_data_next = xgmii_txd;
encoded_tx_hdr_next = SYNC_DATA;
tx_bad_block_next = 1'b0;
end else begin
if (xgmii_txc == 8'h1f && xgmii_txd[39:32] == XGMII_SEQ_OS) begin
// ordered set in lane 4
encoded_tx_data_next = {xgmii_txd[63:40], O_SEQ_OS, encoded_ctrl[27:0], BLOCK_TYPE_OS_4};
tx_bad_block_next = encode_err[3:0] != 0;
end else if (xgmii_txc == 8'h1f && xgmii_txd[39:32] == XGMII_START) begin
// start in lane 4
encoded_tx_data_next = {xgmii_txd[63:40], 4'd0, encoded_ctrl[27:0], BLOCK_TYPE_START_4};
tx_bad_block_next = encode_err[3:0] != 0;
end else if (xgmii_txc == 8'h11 && xgmii_txd[7:0] == XGMII_SEQ_OS && xgmii_txd[39:32] == XGMII_START) begin
// ordered set in lane 0, start in lane 4
encoded_tx_data_next = {xgmii_txd[63:40], 4'd0, O_SEQ_OS, xgmii_txd[31:8], BLOCK_TYPE_OS_START};
tx_bad_block_next = 1'b0;
end else if (xgmii_txc == 8'h11 && xgmii_txd[7:0] == XGMII_SEQ_OS && xgmii_txd[39:32] == XGMII_SEQ_OS) begin
// ordered set in lane 0 and lane 4
encoded_tx_data_next = {xgmii_txd[63:40], O_SEQ_OS, O_SEQ_OS, xgmii_txd[31:8], BLOCK_TYPE_OS_04};
tx_bad_block_next = 1'b0;
end else if (xgmii_txc == 8'h01 && xgmii_txd[7:0] == XGMII_START) begin
// start in lane 0
encoded_tx_data_next = {xgmii_txd[63:8], BLOCK_TYPE_START_0};
tx_bad_block_next = 1'b0;
end else if (xgmii_txc == 8'hf1 && xgmii_txd[7:0] == XGMII_SEQ_OS) begin
// ordered set in lane 0
encoded_tx_data_next = {encoded_ctrl[55:28], O_SEQ_OS, xgmii_txd[31:8], BLOCK_TYPE_OS_0};
tx_bad_block_next = encode_err[7:4] != 0;
end else if (xgmii_txc == 8'hff && xgmii_txd[7:0] == XGMII_TERM) begin
// terminate in lane 0
encoded_tx_data_next = {encoded_ctrl[55:7], 7'd0, BLOCK_TYPE_TERM_0};
tx_bad_block_next = encode_err[7:1] != 0;
end else if (xgmii_txc == 8'hfe && xgmii_txd[15:8] == XGMII_TERM) begin
// terminate in lane 1
encoded_tx_data_next = {encoded_ctrl[55:14], 6'd0, xgmii_txd[7:0], BLOCK_TYPE_TERM_1};
tx_bad_block_next = encode_err[7:2] != 0;
end else if (xgmii_txc == 8'hfc && xgmii_txd[23:16] == XGMII_TERM) begin
// terminate in lane 2
encoded_tx_data_next = {encoded_ctrl[55:21], 5'd0, xgmii_txd[15:0], BLOCK_TYPE_TERM_2};
tx_bad_block_next = encode_err[7:3] != 0;
end else if (xgmii_txc == 8'hf8 && xgmii_txd[31:24] == XGMII_TERM) begin
// terminate in lane 3
encoded_tx_data_next = {encoded_ctrl[55:28], 4'd0, xgmii_txd[23:0], BLOCK_TYPE_TERM_3};
tx_bad_block_next = encode_err[7:4] != 0;
end else if (xgmii_txc == 8'hf0 && xgmii_txd[39:32] == XGMII_TERM) begin
// terminate in lane 4
encoded_tx_data_next = {encoded_ctrl[55:35], 3'd0, xgmii_txd[31:0], BLOCK_TYPE_TERM_4};
tx_bad_block_next = encode_err[7:5] != 0;
end else if (xgmii_txc == 8'he0 && xgmii_txd[47:40] == XGMII_TERM) begin
// terminate in lane 5
encoded_tx_data_next = {encoded_ctrl[55:42], 2'd0, xgmii_txd[39:0], BLOCK_TYPE_TERM_5};
tx_bad_block_next = encode_err[7:6] != 0;
end else if (xgmii_txc == 8'hc0 && xgmii_txd[55:48] == XGMII_TERM) begin
// terminate in lane 6
encoded_tx_data_next = {encoded_ctrl[55:49], 1'd0, xgmii_txd[47:0], BLOCK_TYPE_TERM_6};
tx_bad_block_next = encode_err[7] != 0;
end else if (xgmii_txc == 8'h80 && xgmii_txd[63:56] == XGMII_TERM) begin
// terminate in lane 7
encoded_tx_data_next = {xgmii_txd[55:0], BLOCK_TYPE_TERM_7};
tx_bad_block_next = 1'b0;
end else if (xgmii_txc == 8'hff) begin
// all control
encoded_tx_data_next = {encoded_ctrl, BLOCK_TYPE_CTRL};
tx_bad_block_next = encode_err != 0;
end else begin
// no corresponding block format
encoded_tx_data_next = {{8{CTRL_ERROR}}, BLOCK_TYPE_CTRL};
tx_bad_block_next = 1'b1;
end
encoded_tx_hdr_next = SYNC_CTRL;
end
@ -247,6 +273,8 @@ end
always @(posedge clk) begin
encoded_tx_data_reg <= encoded_tx_data_next;
encoded_tx_hdr_reg <= encoded_tx_hdr_next;
tx_bad_block_reg <= tx_bad_block_next;
end
endmodule