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More critical path optimizations

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This commit is contained in:
Alex Forencich 2019-06-19 15:06:55 -07:00
parent 134ce04777
commit eb1f38a749
4 changed files with 24 additions and 4 deletions
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7
rtl/ip_eth_rx_64.v
View File

@ -396,10 +396,15 @@ always @* begin
// word transfer through
word_count_next = word_count_reg - 16'd8;
transfer_in_save = 1'b1;
if (word_count_reg <= keep2count(shift_eth_payload_axis_tkeep)) begin
if (word_count_reg <= 8) begin
// have entire payload
m_ip_payload_axis_tkeep_int = shift_eth_payload_axis_tkeep & count2keep(word_count_reg);
if (shift_eth_payload_axis_tlast) begin
if (keep2count(shift_eth_payload_axis_tkeep) < word_count_reg[4:0]) begin
// end of frame, but length does not match
error_payload_early_termination_next = 1'b1;
m_ip_payload_axis_tuser_int = 1'b1;
end
s_eth_payload_axis_tready_next = 1'b0;
flush_save = 1'b1;
s_eth_hdr_ready_next = !m_ip_hdr_valid_reg && !check_hdr_reg;

7
rtl/ip_eth_tx_64.v
View File

@ -416,10 +416,15 @@ always @* begin
// word transfer through
word_count_next = word_count_reg - 16'd8;
transfer_in_save = 1'b1;
if (keep2count(shift_ip_payload_axis_tkeep) >= word_count_reg) begin
if (word_count_reg <= 8) begin
// have entire payload
m_eth_payload_axis_tkeep_int = count2keep(word_count_reg);
if (shift_ip_payload_axis_tlast) begin
if (keep2count(shift_ip_payload_axis_tkeep) < word_count_reg[4:0]) begin
// end of frame, but length does not match
error_payload_early_termination_next = 1'b1;
m_eth_payload_axis_tuser_int = 1'b1;
end
s_ip_payload_axis_tready_next = 1'b0;
flush_save = 1'b1;
s_ip_hdr_ready_next = !m_eth_hdr_valid_next;

7
rtl/udp_ip_rx_64.v
View File

@ -335,10 +335,15 @@ always @* begin
if (s_ip_payload_axis_tready && s_ip_payload_axis_tvalid) begin
// word transfer through
word_count_next = word_count_reg - 16'd8;
if (keep2count(s_ip_payload_axis_tkeep) >= word_count_reg) begin
if (word_count_reg <= 8) begin
// have entire payload
m_udp_payload_axis_tkeep_int = s_ip_payload_axis_tkeep & count2keep(word_count_reg);
if (s_ip_payload_axis_tlast) begin
if (keep2count(s_ip_payload_axis_tkeep) < word_count_reg[4:0]) begin
// end of frame, but length does not match
error_payload_early_termination_next = 1'b1;
m_udp_payload_axis_tuser_int = 1'b1;
end
s_ip_payload_axis_tready_next = 1'b0;
s_ip_hdr_ready_next = !m_udp_hdr_valid_next;
state_next = STATE_IDLE;

7
rtl/udp_ip_tx_64.v
View File

@ -332,10 +332,15 @@ always @* begin
if (m_ip_payload_axis_tready_int_reg && s_udp_payload_axis_tvalid) begin
// word transfer through
word_count_next = word_count_reg - 16'd8;
if (keep2count(s_udp_payload_axis_tkeep) >= word_count_reg) begin
if (word_count_reg <= 8) begin
// have entire payload
m_ip_payload_axis_tkeep_int = count2keep(word_count_reg);
if (s_udp_payload_axis_tlast) begin
if (keep2count(s_udp_payload_axis_tkeep) < word_count_reg[4:0]) begin
// end of frame, but length does not match
error_payload_early_termination_next = 1'b1;
m_ip_payload_axis_tuser_int = 1'b1;
end
s_udp_payload_axis_tready_next = 1'b0;
s_udp_hdr_ready_next = !m_ip_hdr_valid_next;
state_next = STATE_IDLE;