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[/] [ha1588/] [trunk/] [rtl/] [tsu/] [ptp_parser.v] - Blame information for rev 14

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Line No. Rev Author Line
1 4 ash_riple 
`timescale 1ns/1ns
2 
 
3 
module ptp_parser (
4 
  input        clk, rst,
5 10 edn_walter 
  input [31:0] int_data,
6 
  input        int_valid,
7 
  input        int_sop,
8 
  input        int_eop,
9 
  input [ 1:0] int_mod,
10 
  input [31:0] sop_time,
11 4 ash_riple 
 
12 
  output reg        ptp_found,
13 9 edn_walter 
  output reg [51:0] ptp_infor
14 4 ash_riple 
);
15 
 
16 10 edn_walter 
reg [31:0] int_data_d1;
17 
reg        int_valid_d1;
18 
reg        int_sop_d1;
19 
reg        int_eop_d1;
20 
reg [ 1:0] int_mod_d1;
21 4 ash_riple 
always @(posedge rst or posedge clk) begin
22 
  if (rst) begin
23 10 edn_walter 
    int_data_d1  <= 32'h00000000;
24 
    int_valid_d1 <= 1'b0;
25 
    int_sop_d1   <= 1'b0;
26 
    int_eop_d1   <= 1'b0;
27 
    int_mod_d1   <= 2'b00;
28 4 ash_riple 
  end
29 
  else begin
30 10 edn_walter 
    if (int_valid) begin
31 
      int_data_d1  <= int_data;
32 
      int_mod_d1   <= int_mod;
33 4 ash_riple 
    end
34 10 edn_walter 
      int_valid_d1 <= int_valid;
35 
      int_sop_d1   <= int_sop;
36 
      int_eop_d1   <= int_eop;
37 4 ash_riple 
  end
38 
end
39 
 
40 10 edn_walter 
reg [ 9:0] int_cnt, bypass_ipv4_cnt, bypass_ipv6_cnt, bypass_udp_cnt, ptp_cnt;
41 
reg bypass_vlan, ptp_l2, bypass_ipv4, bypass_ipv6, found_udp, bypass_udp, ptp_l4, ptp_event;
42 8 edn_walter 
reg [ 3:0] ptp_msgid;
43 
reg [15:0] ptp_seqid;
44 4 ash_riple 
always @(posedge rst or posedge clk) begin
45 10 edn_walter 
  if (rst) begin
46 
    int_cnt <= 10'd0;
47 
    bypass_ipv4_cnt <= 10'd0;
48 11 edn_walter 
    bypass_ipv6_cnt <= 10'd0;
49 10 edn_walter 
    bypass_udp_cnt <= 10'd0;
50 
  end
51 
  else begin
52 
    if (int_valid_d1 && int_sop_d1)
53 
      int_cnt <= 10'd0;
54 
    else if (int_valid_d1)
55 11 edn_walter 
      int_cnt <= int_cnt + 10'd1 - bypass_vlan - (bypass_ipv4 || bypass_ipv6 || bypass_udp);
56 10 edn_walter 
 
57 
    if (int_valid_d1 && int_sop_d1)
58 
      bypass_ipv4_cnt <= 10'd0;
59 
    else if (int_valid_d1 && bypass_ipv4)
60 
      bypass_ipv4_cnt <= bypass_ipv4_cnt + 10'd1;
61 
 
62 
    if (int_valid_d1 && int_sop_d1)
63 11 edn_walter 
      bypass_ipv6_cnt <= 10'd0;
64 
    else if (int_valid_d1 && bypass_ipv6)
65 
      bypass_ipv6_cnt <= bypass_ipv6_cnt + 10'd1;
66 
 
67 
    if (int_valid_d1 && int_sop_d1)
68 10 edn_walter 
      bypass_udp_cnt <= 10'd0;
69 
    else if (int_valid_d1 && bypass_udp)
70 
      bypass_udp_cnt <= bypass_udp_cnt + 10'd1;
71 
  end
72 4 ash_riple 
end
73 
 
74 
always @(posedge rst or posedge clk) begin
75 
  if (rst) begin
76 10 edn_walter 
    bypass_vlan  <= 1'b0;
77 
    bypass_ipv4  <= 1'b0;
78 11 edn_walter 
    bypass_ipv6  <= 1'b0;
79 10 edn_walter 
    found_udp    <= 1'b0;
80 
    bypass_udp   <= 1'b0;
81 
    ptp_l2    <= 1'b0;
82 
    ptp_l4    <= 1'b0;
83 4 ash_riple 
    ptp_event <= 1'b0;
84 10 edn_walter 
  end
85 
  else if (int_valid_d1 && int_sop_d1) begin
86 
    bypass_vlan  <= 1'b0;
87 
    bypass_ipv4  <= 1'b0;
88 11 edn_walter 
    bypass_ipv6  <= 1'b0;
89 10 edn_walter 
    found_udp    <= 1'b0;
90 
    bypass_udp   <= 1'b0;
91 
    ptp_l2    <= 1'b0;
92 
    ptp_l4    <= 1'b0;
93 
    ptp_event <= 1'b0;
94 
  end
95 
  else begin
96 
    // bypass vlan
97 
    // ether_type == cvlan
98 12 edn_walter 
    if      (int_valid_d1 && int_cnt==10'd3 && int_data_d1[31:16]==16'h8100)
99 10 edn_walter 
      bypass_vlan <= 1'b1;
100 12 edn_walter 
    // ether_type == svlan
101 
    else if (int_valid_d1 && int_cnt==10'd3 && int_data_d1[31:16]==16'h9100)
102 
      bypass_vlan <= 1'b1;
103 
    else if (int_valid_d1 && int_cnt==10'd4 && int_data_d1[31:16]==16'h8100 && bypass_vlan)
104 
      bypass_vlan <= 1'b1;
105 
    else if (int_valid_d1 && bypass_vlan)
106 10 edn_walter 
      bypass_vlan <= 1'b0;
107 
 
108 
    // bypass ipv4
109 
    // ether_type == ip, ip_version == 4
110 12 edn_walter 
    if      (int_valid_d1 && (int_cnt==10'd3 || bypass_vlan && int_cnt==10'd4) && bypass_ipv4_cnt==10'd0 &&
111 10 edn_walter 
             int_data_d1[31:16]==16'h0800 && int_data_d1[15:12]==4'h4)
112 
      bypass_ipv4 <= 1'b1;
113 
    else if (int_valid_d1 && bypass_ipv4_cnt==10'd4)
114 
      bypass_ipv4 <= 1'b0;
115 
 
116 
    // bypass ipv6
117 
    // ether_type == ip, ip_version == 6
118 12 edn_walter 
    if      (int_valid_d1 && (int_cnt==10'd3 || bypass_vlan && int_cnt==10'd4) && bypass_ipv6_cnt==10'd0 &&
119 11 edn_walter 
             int_data_d1[31:16]==16'h86dd && int_data_d1[15:12]==4'h6)
120 
      bypass_ipv6 <= 1'b1;
121 
    else if (int_valid_d1 && bypass_ipv6_cnt==10'd9)
122 
      bypass_ipv6 <= 1'b0;
123 10 edn_walter 
 
124 
    // check if it is UDP
125 
    // ipv4_protocol == udp
126 
    if      (int_valid_d1 && bypass_ipv4_cnt==10'd1 && int_data_d1[ 7: 0]== 8'h11)
127 
      found_udp <= 1'b1;
128 
    // ipv6_protocol == udp
129 11 edn_walter 
    else if (int_valid_d1 && bypass_ipv6_cnt==10'd1 && int_data_d1[31:24]== 8'h11)
130 
      found_udp <= 1'b1;
131 10 edn_walter 
 
132 
    // bypass udp
133 
    // ipv4_udp
134 
    if      (int_valid_d1 && bypass_ipv4_cnt==10'd4 && bypass_udp_cnt==10'd0 && found_udp)
135 
      bypass_udp <= 1'b1;
136 
    else if (int_valid_d1 && bypass_udp_cnt==10'd2)
137 
      bypass_udp <= 1'b0;
138 
    // ipv6_udp
139 11 edn_walter 
    else if (int_valid_d1 && bypass_ipv6_cnt==10'd9 && bypass_udp_cnt==10'd0 && found_udp)
140 
      bypass_udp <= 1'b1;
141 
    else if (int_valid_d1 && bypass_udp_cnt==10'd2)
142 
      bypass_udp <= 1'b0;
143 10 edn_walter 
 
144 
    // check if it is L2 PTP
145 
    // ether_type == ptp
146 12 edn_walter 
    if (int_valid_d1 && (int_cnt==10'd3 || bypass_vlan && int_cnt==10'd4) && int_data_d1[31:16]==16'h88F7)
147 10 edn_walter 
      ptp_l2 <= 1'b1;
148 
    // check if it is L4 PTP
149 11 edn_walter 
    // udp_dest_port == ptp_event
150 12 edn_walter 
    if (int_valid_d1 && bypass_udp_cnt==10'd0 && bypass_udp &&
151 
       (int_data_d1[31:16]==16'h013f || int_data_d1[31:16]==16'h0140))
152 10 edn_walter 
      ptp_l4 <= 1'b1;
153 
 
154 
    // check if it is PTP Event message
155 12 edn_walter 
    if      (int_valid_d1 && (int_cnt==10'd3 || bypass_vlan && int_cnt==10'd4) && int_data_d1[31:16]==16'h88F7    &&
156 
            (int_data_d1[11: 8]== 4'h0 || int_data_d1[11:8]==4'h2))
157 10 edn_walter 
      // ptp_message_id == sync || delay_req
158 
      ptp_event <= 1'b1;
159 12 edn_walter 
    else if (int_valid_d1 && (int_cnt==10'd4 || bypass_vlan && int_cnt==10'd5) && bypass_udp_cnt==10'd1 && ptp_l4 &&
160 
            (int_data_d1[11: 8]== 4'h0 || int_data_d1[11:8]==4'h2))
161 10 edn_walter 
      // ptp_message_id == sync || delay_req
162 
      ptp_event <= 1'b1;
163 
  end
164 
end
165 
 
166 
always @(posedge rst or posedge clk) begin
167 
  if (rst) begin
168 7 edn_walter 
    ptp_msgid <= 4'd0;
169 8 edn_walter 
    ptp_seqid <= 16'd0;
170 4 ash_riple 
  end
171 10 edn_walter 
  else if (int_valid_d1 && int_sop_d1) begin
172 7 edn_walter 
    ptp_msgid <= 4'd0;
173 8 edn_walter 
    ptp_seqid <= 16'd0;
174 4 ash_riple 
  end
175 
  else begin
176 10 edn_walter 
    // get PTP identification information as additional information to Timestamp
177 
    // message id
178 
    if      (int_valid_d1 && int_cnt==10'd3 && int_data_d1[31:16]==16'h88F7)
179 
      ptp_msgid <=   int_data_d1[11: 8];
180 
    else if (int_valid_d1 && int_cnt==10'd4 && bypass_udp_cnt==10'd1 && ptp_l4)
181 
      ptp_msgid <=   int_data_d1[11: 8];
182 
    // sequence id
183 
    if      (int_valid_d1 && int_cnt==10'd11 && ptp_l2)
184 
      ptp_seqid <=   int_data_d1[31:16];
185 
    else if (int_valid_d1 && int_cnt==10'd10 && ptp_l4)
186 
      ptp_seqid <=   int_data_d1[31:16];
187 4 ash_riple 
  end
188 
end
189 
 
190 
always @(posedge rst or posedge clk) begin
191 
  if (rst) begin
192 
    ptp_found <=  1'b0;
193 9 edn_walter 
    ptp_infor <= 52'd0;
194 4 ash_riple 
  end
195 10 edn_walter 
  else if (int_valid_d1 && int_sop_d1) begin
196 4 ash_riple 
    ptp_found <=  1'b0;
197 9 edn_walter 
    ptp_infor <= 52'd0;
198 4 ash_riple 
  end
199 10 edn_walter 
  else if (int_valid_d1 && int_eop_d1) begin
200 4 ash_riple 
    ptp_found <=  ptp_event;
201 10 edn_walter 
    ptp_infor <= {ptp_seqid, ptp_msgid, sop_time};  // 16+4+32
202 4 ash_riple 
  end
203 
  else begin
204 
    ptp_found <=  1'b0;
205 9 edn_walter 
    ptp_infor <= 52'd0;
206 4 ash_riple 
  end
207 
end
208 
 
209 
endmodule

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