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zircon: Use packed array for readability

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Signed-off-by: Alex Forencich <alex@alexforencich.com>
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Alex Forencich
2026-04-07 15:37:18 -07:00
parent 9a6320c3f7
commit 488558aac5
1 changed files with 7 additions and 4 deletions
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11
src/zircon/rtl/zircon_ip_len_cksum.sv
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@@ -39,6 +39,9 @@ localparam DATA_W = s_axis_pkt.DATA_W;
localparam KEEP_W = s_axis_pkt.KEEP_W;
localparam META_W = m_axis_meta.DATA_W;
localparam BYTE_LANES = KEEP_W;
localparam BYTE_W = DATA_W/BYTE_LANES;
localparam ID_W = s_axis_pkt.ID_W;
localparam ID_EN = s_axis_pkt.ID_EN && m_axis_pkt.ID_EN;
localparam META_ID_EN = s_axis_pkt.ID_EN && m_axis_meta.ID_EN;
@@ -112,10 +115,10 @@ assign m_axis_meta.tlast = 1'b1;
assign m_axis_meta.tvalid = m_axis_meta_valid_reg;
// Mask input data
wire [DATA_W-1:0] pkt_data_masked;
wire [BYTE_LANES-1:0][BYTE_W-1:0] pkt_data_masked;
for (genvar j = 0; j < KEEP_W; j = j + 1) begin
assign pkt_data_masked[j*8 +: 8] = (s_axis_pkt.tkeep[j] && mask_reg[j]) ? s_axis_pkt.tdata[j*8 +: 8] : 8'd0;
assign pkt_data_masked[j] = (s_axis_pkt.tkeep[j] && mask_reg[j]) ? s_axis_pkt.tdata[j*8 +: 8] : 8'd0;
end
always_ff @(posedge clk) begin
@@ -123,8 +126,8 @@ always_ff @(posedge clk) begin
if (s_axis_pkt.tvalid && s_axis_pkt.tready) begin
for (integer i = 0; i < DATA_W/8/4; i = i + 1) begin
sum_reg[0][i*17 +: 17] <= {pkt_data_masked[(4*i+0)*8 +: 8], pkt_data_masked[(4*i+1)*8 +: 8]} + {pkt_data_masked[(4*i+2)*8 +: 8], pkt_data_masked[(4*i+3)*8 +: 8]};
len_reg[0][i*3 +: 3] <= 3'(s_axis_pkt.tkeep[(4*i+0)]) + 3'(s_axis_pkt.tkeep[(4*i+1)]) + 3'(s_axis_pkt.tkeep[(4*i+2)]) + 3'(s_axis_pkt.tkeep[(4*i+3)]);
sum_reg[0][i*17 +: 17] <= {pkt_data_masked[4*i+0], pkt_data_masked[4*i+1]} + {pkt_data_masked[4*i+2], pkt_data_masked[4*i+3]};
len_reg[0][i*3 +: 3] <= 3'(s_axis_pkt.tkeep[4*i+0]) + 3'(s_axis_pkt.tkeep[4*i+1]) + 3'(s_axis_pkt.tkeep[4*i+2]) + 3'(s_axis_pkt.tkeep[4*i+3]);
end
sum_valid_reg[0] <= 1'b1;
sum_last_reg[0] <= s_axis_pkt.tlast;