| Line 11... |
Line 11... |
output reg ptp_found,
|
output reg ptp_found,
|
output reg [19:0] ptp_infor
|
output reg [19:0] ptp_infor
|
);
|
);
|
|
|
reg [31:0] int_data_d1;
|
reg [31:0] int_data_d1;
|
reg int_valid_d1;
|
|
reg int_sop_d1;
|
|
reg int_eop_d1;
|
|
reg [ 1:0] int_mod_d1;
|
|
always @(posedge rst or posedge clk) begin
|
always @(posedge rst or posedge clk) begin
|
if (rst) begin
|
if (rst) begin
|
int_data_d1 <= 32'h00000000;
|
int_data_d1 <= 32'h00000000;
|
int_valid_d1 <= 1'b0;
|
|
int_sop_d1 <= 1'b0;
|
|
int_eop_d1 <= 1'b0;
|
|
int_mod_d1 <= 2'b00;
|
|
end
|
end
|
else begin
|
else begin
|
if (int_valid) begin
|
if (int_valid) begin
|
int_data_d1 <= int_data;
|
int_data_d1 <= int_data;
|
int_mod_d1 <= int_mod;
|
|
end
|
end
|
int_valid_d1 <= int_valid;
|
|
int_sop_d1 <= int_sop;
|
|
int_eop_d1 <= int_eop;
|
|
end
|
end
|
end
|
end
|
|
|
|
// packet parser: counter
|
reg [ 9:0] int_cnt, bypass_ipv4_cnt, bypass_ipv6_cnt, bypass_udp_cnt, ptp_cnt;
|
reg [ 9:0] int_cnt, bypass_ipv4_cnt, bypass_ipv6_cnt, bypass_udp_cnt, ptp_cnt;
|
reg bypass_vlan, ptp_l2, bypass_ipv4, bypass_ipv6, found_udp, bypass_udp, ptp_l4, ptp_event;
|
reg bypass_vlan, ptp_l2, bypass_ipv4, bypass_ipv6, found_udp, bypass_udp, ptp_l4, ptp_event;
|
reg [ 3:0] ptp_msgid;
|
reg [ 3:0] ptp_msgid;
|
reg [15:0] ptp_seqid;
|
reg [15:0] ptp_seqid;
|
always @(posedge rst or posedge clk) begin
|
always @(posedge rst or posedge clk) begin
|
| Line 46... |
Line 35... |
bypass_ipv4_cnt <= 10'd0;
|
bypass_ipv4_cnt <= 10'd0;
|
bypass_ipv6_cnt <= 10'd0;
|
bypass_ipv6_cnt <= 10'd0;
|
bypass_udp_cnt <= 10'd0;
|
bypass_udp_cnt <= 10'd0;
|
end
|
end
|
else begin
|
else begin
|
if (int_valid_d1 && int_sop_d1)
|
if (int_valid && int_sop)
|
int_cnt <= 10'd0;
|
int_cnt <= 10'd0;
|
else if (int_valid_d1)
|
else if (int_valid)
|
int_cnt <= int_cnt + 10'd1 - bypass_vlan - (bypass_ipv4 || bypass_ipv6 || bypass_udp);
|
int_cnt <= int_cnt + 10'd1 - bypass_vlan - (bypass_ipv4 || bypass_ipv6 || bypass_udp);
|
|
|
if (int_valid_d1 && int_sop_d1)
|
if (int_valid && int_sop)
|
bypass_ipv4_cnt <= 10'd0;
|
bypass_ipv4_cnt <= 10'd0;
|
else if (int_valid_d1 && bypass_ipv4)
|
else if (int_valid && bypass_ipv4)
|
bypass_ipv4_cnt <= bypass_ipv4_cnt + 10'd1;
|
bypass_ipv4_cnt <= bypass_ipv4_cnt + 10'd1;
|
|
|
if (int_valid_d1 && int_sop_d1)
|
if (int_valid && int_sop)
|
bypass_ipv6_cnt <= 10'd0;
|
bypass_ipv6_cnt <= 10'd0;
|
else if (int_valid_d1 && bypass_ipv6)
|
else if (int_valid && bypass_ipv6)
|
bypass_ipv6_cnt <= bypass_ipv6_cnt + 10'd1;
|
bypass_ipv6_cnt <= bypass_ipv6_cnt + 10'd1;
|
|
|
if (int_valid_d1 && int_sop_d1)
|
if (int_valid && int_sop)
|
bypass_udp_cnt <= 10'd0;
|
bypass_udp_cnt <= 10'd0;
|
else if (int_valid_d1 && bypass_udp)
|
else if (int_valid && bypass_udp)
|
bypass_udp_cnt <= bypass_udp_cnt + 10'd1;
|
bypass_udp_cnt <= bypass_udp_cnt + 10'd1;
|
|
|
|
if (int_valid && int_sop)
|
|
ptp_cnt <= 10'd0;
|
|
else if (int_valid && (ptp_l2 || (bypass_udp_cnt>=10'd2 && ptp_l4)))
|
|
ptp_cnt <= ptp_cnt + 10'd1;
|
end
|
end
|
end
|
end
|
|
|
|
// packet parser: comparator
|
always @(posedge rst or posedge clk) begin
|
always @(posedge rst or posedge clk) begin
|
if (rst) begin
|
if (rst) begin
|
bypass_vlan <= 1'b0;
|
bypass_vlan <= 1'b0;
|
bypass_ipv4 <= 1'b0;
|
bypass_ipv4 <= 1'b0;
|
bypass_ipv6 <= 1'b0;
|
bypass_ipv6 <= 1'b0;
|
| Line 79... |
Line 74... |
bypass_udp <= 1'b0;
|
bypass_udp <= 1'b0;
|
ptp_l2 <= 1'b0;
|
ptp_l2 <= 1'b0;
|
ptp_l4 <= 1'b0;
|
ptp_l4 <= 1'b0;
|
ptp_event <= 1'b0;
|
ptp_event <= 1'b0;
|
end
|
end
|
else if (int_valid_d1 && int_sop_d1) begin
|
else if (int_valid && int_sop) begin
|
bypass_vlan <= 1'b0;
|
bypass_vlan <= 1'b0;
|
bypass_ipv4 <= 1'b0;
|
bypass_ipv4 <= 1'b0;
|
bypass_ipv6 <= 1'b0;
|
bypass_ipv6 <= 1'b0;
|
found_udp <= 1'b0;
|
found_udp <= 1'b0;
|
bypass_udp <= 1'b0;
|
bypass_udp <= 1'b0;
|
| Line 91... |
Line 86... |
ptp_l4 <= 1'b0;
|
ptp_l4 <= 1'b0;
|
ptp_event <= 1'b0;
|
ptp_event <= 1'b0;
|
end
|
end
|
else begin
|
else begin
|
// bypass vlan
|
// bypass vlan
|
// ether_type == cvlan
|
if (int_valid && int_cnt==10'd3 && int_data[31:16]==16'h8100) // ether_type == cvlan
|
if (int_valid_d1 && int_cnt==10'd3 && int_data_d1[31:16]==16'h8100)
|
|
bypass_vlan <= 1'b1;
|
bypass_vlan <= 1'b1;
|
// ether_type == svlan
|
else if (int_valid && int_cnt==10'd3 && int_data[31:16]==16'h9100) // ether_type == svlan
|
else if (int_valid_d1 && int_cnt==10'd3 && int_data_d1[31:16]==16'h9100)
|
|
bypass_vlan <= 1'b1;
|
bypass_vlan <= 1'b1;
|
else if (int_valid_d1 && int_cnt==10'd4 && int_data_d1[31:16]==16'h8100 && bypass_vlan)
|
else if (int_valid && int_cnt==10'd4 && int_data[31:16]==16'h8100 && bypass_vlan) // svlan_type == cvlan
|
bypass_vlan <= 1'b1;
|
bypass_vlan <= 1'b1;
|
else if (int_valid_d1 && bypass_vlan)
|
else if (int_valid && bypass_vlan)
|
bypass_vlan <= 1'b0;
|
bypass_vlan <= 1'b0;
|
|
|
// bypass ipv4
|
// bypass ipv4
|
// ether_type == ip, ip_version == 4
|
if (int_valid && (int_cnt==10'd3 || bypass_vlan && int_cnt==10'd4) && bypass_ipv4_cnt==10'd0 &&
|
if (int_valid_d1 && (int_cnt==10'd3 || bypass_vlan && int_cnt==10'd4) && bypass_ipv4_cnt==10'd0 &&
|
int_data[31:16]==16'h0800 && int_data[15:12]==4'h4) // ether_type == ipv4, ip_version == 4
|
int_data_d1[31:16]==16'h0800 && int_data_d1[15:12]==4'h4)
|
|
bypass_ipv4 <= 1'b1;
|
bypass_ipv4 <= 1'b1;
|
else if (int_valid_d1 && bypass_ipv4_cnt==10'd4)
|
else if (int_valid && bypass_ipv4_cnt==10'd4)
|
bypass_ipv4 <= 1'b0;
|
bypass_ipv4 <= 1'b0;
|
|
|
// bypass ipv6
|
// bypass ipv6
|
// ether_type == ip, ip_version == 6
|
if (int_valid && (int_cnt==10'd3 || bypass_vlan && int_cnt==10'd4) && bypass_ipv6_cnt==10'd0 &&
|
if (int_valid_d1 && (int_cnt==10'd3 || bypass_vlan && int_cnt==10'd4) && bypass_ipv6_cnt==10'd0 &&
|
int_data[31:16]==16'h86dd && int_data[15:12]==4'h6) // ether_type == ipv6, ip_version == 6
|
int_data_d1[31:16]==16'h86dd && int_data_d1[15:12]==4'h6)
|
|
bypass_ipv6 <= 1'b1;
|
bypass_ipv6 <= 1'b1;
|
else if (int_valid_d1 && bypass_ipv6_cnt==10'd9)
|
else if (int_valid && bypass_ipv6_cnt==10'd9)
|
bypass_ipv6 <= 1'b0;
|
bypass_ipv6 <= 1'b0;
|
|
|
// check if it is UDP
|
// check if it is UDP
|
// ipv4_protocol == udp
|
if (int_valid && bypass_ipv4_cnt==10'd1 && int_data[ 7: 0]== 8'h11) // ipv4_protocol == udp
|
if (int_valid_d1 && bypass_ipv4_cnt==10'd1 && int_data_d1[ 7: 0]== 8'h11)
|
|
found_udp <= 1'b1;
|
found_udp <= 1'b1;
|
// ipv6_protocol == udp
|
else if (int_valid && bypass_ipv6_cnt==10'd1 && int_data[31:24]== 8'h11) // ipv6_protocol == udp
|
else if (int_valid_d1 && bypass_ipv6_cnt==10'd1 && int_data_d1[31:24]== 8'h11)
|
|
found_udp <= 1'b1;
|
found_udp <= 1'b1;
|
|
|
// bypass udp
|
// bypass udp
|
// ipv4_udp
|
if (int_valid && bypass_ipv4_cnt==10'd4 && bypass_udp_cnt==10'd0 && found_udp) // ipv4_udp
|
if (int_valid_d1 && bypass_ipv4_cnt==10'd4 && bypass_udp_cnt==10'd0 && found_udp)
|
|
bypass_udp <= 1'b1;
|
bypass_udp <= 1'b1;
|
else if (int_valid_d1 && bypass_udp_cnt==10'd2)
|
else if (int_valid && bypass_ipv6_cnt==10'd9 && bypass_udp_cnt==10'd0 && found_udp) // ipv6_udp
|
bypass_udp <= 1'b0;
|
|
// ipv6_udp
|
|
else if (int_valid_d1 && bypass_ipv6_cnt==10'd9 && bypass_udp_cnt==10'd0 && found_udp)
|
|
bypass_udp <= 1'b1;
|
bypass_udp <= 1'b1;
|
else if (int_valid_d1 && bypass_udp_cnt==10'd2)
|
else if (int_valid && bypass_udp_cnt==10'd2)
|
bypass_udp <= 1'b0;
|
bypass_udp <= 1'b0;
|
|
|
// check if it is L2 PTP
|
// check if it is L2 PTP
|
// ether_type == ptp
|
if (int_valid && (int_cnt==10'd3 || bypass_vlan && int_cnt==10'd4) && int_data[31:16]==16'h88F7) // ether_type == ptp
|
if (int_valid_d1 && (int_cnt==10'd3 || bypass_vlan && int_cnt==10'd4) && int_data_d1[31:16]==16'h88F7)
|
|
ptp_l2 <= 1'b1;
|
ptp_l2 <= 1'b1;
|
// check if it is L4 PTP
|
// check if it is L4 PTP
|
// udp_dest_port == ptp_event
|
if (int_valid && bypass_udp_cnt==10'd0 && bypass_udp &&
|
if (int_valid_d1 && bypass_udp_cnt==10'd0 && bypass_udp &&
|
(int_data[31:16]==16'h013f || int_data[31:16]==16'h0140)) // udp_dest_port == ptp_event || ptp_general
|
(int_data_d1[31:16]==16'h013f || int_data_d1[31:16]==16'h0140))
|
|
ptp_l4 <= 1'b1;
|
ptp_l4 <= 1'b1;
|
|
|
// check if it is PTP Event message
|
// check if it is PTP Event message
|
if (int_valid_d1 && (int_cnt==10'd3 || bypass_vlan && int_cnt==10'd4) && int_data_d1[31:16]==16'h88F7 &&
|
if (int_valid && (int_cnt==10'd3 || bypass_vlan && int_cnt==10'd4) && int_data[31:16]==16'h88F7 &&
|
(int_data_d1[11: 8]== 4'h0 || int_data_d1[11:8]==4'h2))
|
(int_data[11: 8]== 4'h0 || int_data[11:8]==4'h2)) // ptp_message_id == sync || delay_req
|
// ptp_message_id == sync || delay_req
|
|
ptp_event <= 1'b1;
|
ptp_event <= 1'b1;
|
else if (int_valid_d1 && (int_cnt==10'd4 || bypass_vlan && int_cnt==10'd5) && bypass_udp_cnt==10'd1 && ptp_l4 &&
|
else if (int_valid && (int_cnt==10'd4 || bypass_vlan && int_cnt==10'd5) && bypass_udp_cnt==10'd1 && ptp_l4 &&
|
(int_data_d1[11: 8]== 4'h0 || int_data_d1[11:8]==4'h2))
|
(int_data[11: 8]== 4'h0 || int_data[11:8]==4'h2)) // ptp_message_id == sync || delay_req
|
// ptp_message_id == sync || delay_req
|
|
ptp_event <= 1'b1;
|
ptp_event <= 1'b1;
|
end
|
end
|
end
|
end
|
|
|
|
// ptp message
|
|
reg [31:0] ptp_data;
|
always @(posedge rst or posedge clk) begin
|
always @(posedge rst or posedge clk) begin
|
if (rst) begin
|
if (rst) begin
|
|
ptp_data <= 32'd0;
|
ptp_msgid <= 4'd0;
|
ptp_msgid <= 4'd0;
|
ptp_seqid <= 16'd0;
|
ptp_seqid <= 16'd0;
|
end
|
end
|
else if (int_valid_d1 && int_sop_d1) begin
|
else if (int_valid && int_sop) begin
|
|
ptp_data <= 32'd0;
|
ptp_msgid <= 4'd0;
|
ptp_msgid <= 4'd0;
|
ptp_seqid <= 16'd0;
|
ptp_seqid <= 16'd0;
|
end
|
end
|
else begin
|
else begin
|
// get PTP identification information as additional information to Timestamp
|
// get PTP identification information as additional information to Timestamp
|
|
// ptp message body
|
|
if (int_valid && (ptp_l2 || (bypass_udp_cnt>=10'd2 && ptp_l4)))
|
|
ptp_data <= {int_data_d1[15:0], int_data[31:16]};
|
// message id
|
// message id
|
if (int_valid_d1 && int_cnt==10'd3 && int_data_d1[31:16]==16'h88F7)
|
if (int_valid && ptp_cnt==10'd1)
|
ptp_msgid <= int_data_d1[11: 8];
|
ptp_msgid <= ptp_data[27:24];
|
else if (int_valid_d1 && int_cnt==10'd4 && bypass_udp_cnt==10'd1 && ptp_l4)
|
|
ptp_msgid <= int_data_d1[11: 8];
|
|
// sequence id
|
// sequence id
|
if (int_valid_d1 && int_cnt==10'd11 && ptp_l2)
|
if (int_valid && ptp_cnt==10'd8)
|
ptp_seqid <= int_data_d1[31:16];
|
ptp_seqid <= ptp_data[15:0];
|
else if (int_valid_d1 && int_cnt==10'd10 && ptp_l4)
|
|
ptp_seqid <= int_data_d1[31:16];
|
|
end
|
end
|
end
|
end
|
|
|
|
// parser output
|
always @(posedge rst or posedge clk) begin
|
always @(posedge rst or posedge clk) begin
|
if (rst) begin
|
if (rst) begin
|
ptp_found <= 1'b0;
|
ptp_found <= 1'b0;
|
ptp_infor <= 20'd0;
|
ptp_infor <= 20'd0;
|
end
|
end
|
else if (int_valid_d1 && int_sop_d1) begin
|
else if (int_valid && int_sop) begin
|
ptp_found <= 1'b0;
|
ptp_found <= 1'b0;
|
ptp_infor <= 20'd0;
|
ptp_infor <= 20'd0;
|
end
|
end
|
else if (int_valid_d1 && int_eop_d1) begin
|
else if (int_valid && ptp_cnt==10'd9) begin
|
ptp_found <= ptp_event;
|
ptp_found <= ptp_event;
|
ptp_infor <= {ptp_seqid, ptp_msgid}; // 16+4
|
ptp_infor <= {ptp_msgid, ptp_seqid}; // 4+16
|
end
|
|
else begin
|
|
ptp_found <= 1'b0;
|
|
ptp_infor <= 20'd0;
|
|
end
|
end
|
end
|
end
|
|
|
endmodule
|
endmodule
|
|
|
No newline at end of file
|
No newline at end of file
|
