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[/] [ha1588/] [trunk/] [rtl/] [tsu/] [ptp_parser.v] - Blame information for rev 27

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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 4 ash_riple 
 
11 
  output reg        ptp_found,
12 27 edn_walter 
  output reg [19:0] ptp_infor
13 4 ash_riple 
);
14 
 
15 10 edn_walter 
reg [31:0] int_data_d1;
16 
reg        int_valid_d1;
17 
reg        int_sop_d1;
18 
reg        int_eop_d1;
19 
reg [ 1:0] int_mod_d1;
20 4 ash_riple 
always @(posedge rst or posedge clk) begin
21 
  if (rst) begin
22 10 edn_walter 
    int_data_d1  <= 32'h00000000;
23 
    int_valid_d1 <= 1'b0;
24 
    int_sop_d1   <= 1'b0;
25 
    int_eop_d1   <= 1'b0;
26 
    int_mod_d1   <= 2'b00;
27 4 ash_riple 
  end
28 
  else begin
29 10 edn_walter 
    if (int_valid) begin
30 
      int_data_d1  <= int_data;
31 
      int_mod_d1   <= int_mod;
32 4 ash_riple 
    end
33 10 edn_walter 
      int_valid_d1 <= int_valid;
34 
      int_sop_d1   <= int_sop;
35 
      int_eop_d1   <= int_eop;
36 4 ash_riple 
  end
37 
end
38 
 
39 10 edn_walter 
reg [ 9:0] int_cnt, bypass_ipv4_cnt, bypass_ipv6_cnt, bypass_udp_cnt, ptp_cnt;
40 
reg bypass_vlan, ptp_l2, bypass_ipv4, bypass_ipv6, found_udp, bypass_udp, ptp_l4, ptp_event;
41 8 edn_walter 
reg [ 3:0] ptp_msgid;
42 
reg [15:0] ptp_seqid;
43 4 ash_riple 
always @(posedge rst or posedge clk) begin
44 10 edn_walter 
  if (rst) begin
45 
    int_cnt <= 10'd0;
46 
    bypass_ipv4_cnt <= 10'd0;
47 11 edn_walter 
    bypass_ipv6_cnt <= 10'd0;
48 10 edn_walter 
    bypass_udp_cnt <= 10'd0;
49 
  end
50 
  else begin
51 
    if (int_valid_d1 && int_sop_d1)
52 
      int_cnt <= 10'd0;
53 
    else if (int_valid_d1)
54 11 edn_walter 
      int_cnt <= int_cnt + 10'd1 - bypass_vlan - (bypass_ipv4 || bypass_ipv6 || bypass_udp);
55 10 edn_walter 
 
56 
    if (int_valid_d1 && int_sop_d1)
57 
      bypass_ipv4_cnt <= 10'd0;
58 
    else if (int_valid_d1 && bypass_ipv4)
59 
      bypass_ipv4_cnt <= bypass_ipv4_cnt + 10'd1;
60 
 
61 
    if (int_valid_d1 && int_sop_d1)
62 11 edn_walter 
      bypass_ipv6_cnt <= 10'd0;
63 
    else if (int_valid_d1 && bypass_ipv6)
64 
      bypass_ipv6_cnt <= bypass_ipv6_cnt + 10'd1;
65 
 
66 
    if (int_valid_d1 && int_sop_d1)
67 10 edn_walter 
      bypass_udp_cnt <= 10'd0;
68 
    else if (int_valid_d1 && bypass_udp)
69 
      bypass_udp_cnt <= bypass_udp_cnt + 10'd1;
70 
  end
71 4 ash_riple 
end
72 
 
73 
always @(posedge rst or posedge clk) begin
74 
  if (rst) begin
75 10 edn_walter 
    bypass_vlan  <= 1'b0;
76 
    bypass_ipv4  <= 1'b0;
77 11 edn_walter 
    bypass_ipv6  <= 1'b0;
78 10 edn_walter 
    found_udp    <= 1'b0;
79 
    bypass_udp   <= 1'b0;
80 
    ptp_l2    <= 1'b0;
81 
    ptp_l4    <= 1'b0;
82 4 ash_riple 
    ptp_event <= 1'b0;
83 10 edn_walter 
  end
84 
  else if (int_valid_d1 && int_sop_d1) begin
85 
    bypass_vlan  <= 1'b0;
86 
    bypass_ipv4  <= 1'b0;
87 11 edn_walter 
    bypass_ipv6  <= 1'b0;
88 10 edn_walter 
    found_udp    <= 1'b0;
89 
    bypass_udp   <= 1'b0;
90 
    ptp_l2    <= 1'b0;
91 
    ptp_l4    <= 1'b0;
92 
    ptp_event <= 1'b0;
93 
  end
94 
  else begin
95 
    // bypass vlan
96 
    // ether_type == cvlan
97 12 edn_walter 
    if      (int_valid_d1 && int_cnt==10'd3 && int_data_d1[31:16]==16'h8100)
98 10 edn_walter 
      bypass_vlan <= 1'b1;
99 12 edn_walter 
    // ether_type == svlan
100 
    else if (int_valid_d1 && int_cnt==10'd3 && int_data_d1[31:16]==16'h9100)
101 
      bypass_vlan <= 1'b1;
102 
    else if (int_valid_d1 && int_cnt==10'd4 && int_data_d1[31:16]==16'h8100 && bypass_vlan)
103 
      bypass_vlan <= 1'b1;
104 
    else if (int_valid_d1 && bypass_vlan)
105 10 edn_walter 
      bypass_vlan <= 1'b0;
106 
 
107 
    // bypass ipv4
108 
    // ether_type == ip, ip_version == 4
109 12 edn_walter 
    if      (int_valid_d1 && (int_cnt==10'd3 || bypass_vlan && int_cnt==10'd4) && bypass_ipv4_cnt==10'd0 &&
110 10 edn_walter 
             int_data_d1[31:16]==16'h0800 && int_data_d1[15:12]==4'h4)
111 
      bypass_ipv4 <= 1'b1;
112 
    else if (int_valid_d1 && bypass_ipv4_cnt==10'd4)
113 
      bypass_ipv4 <= 1'b0;
114 
 
115 
    // bypass ipv6
116 
    // ether_type == ip, ip_version == 6
117 12 edn_walter 
    if      (int_valid_d1 && (int_cnt==10'd3 || bypass_vlan && int_cnt==10'd4) && bypass_ipv6_cnt==10'd0 &&
118 11 edn_walter 
             int_data_d1[31:16]==16'h86dd && int_data_d1[15:12]==4'h6)
119 
      bypass_ipv6 <= 1'b1;
120 
    else if (int_valid_d1 && bypass_ipv6_cnt==10'd9)
121 
      bypass_ipv6 <= 1'b0;
122 10 edn_walter 
 
123 
    // check if it is UDP
124 
    // ipv4_protocol == udp
125 
    if      (int_valid_d1 && bypass_ipv4_cnt==10'd1 && int_data_d1[ 7: 0]== 8'h11)
126 
      found_udp <= 1'b1;
127 
    // ipv6_protocol == udp
128 11 edn_walter 
    else if (int_valid_d1 && bypass_ipv6_cnt==10'd1 && int_data_d1[31:24]== 8'h11)
129 
      found_udp <= 1'b1;
130 10 edn_walter 
 
131 
    // bypass udp
132 
    // ipv4_udp
133 
    if      (int_valid_d1 && bypass_ipv4_cnt==10'd4 && bypass_udp_cnt==10'd0 && found_udp)
134 
      bypass_udp <= 1'b1;
135 
    else if (int_valid_d1 && bypass_udp_cnt==10'd2)
136 
      bypass_udp <= 1'b0;
137 
    // ipv6_udp
138 11 edn_walter 
    else if (int_valid_d1 && bypass_ipv6_cnt==10'd9 && bypass_udp_cnt==10'd0 && found_udp)
139 
      bypass_udp <= 1'b1;
140 
    else if (int_valid_d1 && bypass_udp_cnt==10'd2)
141 
      bypass_udp <= 1'b0;
142 10 edn_walter 
 
143 
    // check if it is L2 PTP
144 
    // ether_type == ptp
145 12 edn_walter 
    if (int_valid_d1 && (int_cnt==10'd3 || bypass_vlan && int_cnt==10'd4) && int_data_d1[31:16]==16'h88F7)
146 10 edn_walter 
      ptp_l2 <= 1'b1;
147 
    // check if it is L4 PTP
148 11 edn_walter 
    // udp_dest_port == ptp_event
149 12 edn_walter 
    if (int_valid_d1 && bypass_udp_cnt==10'd0 && bypass_udp &&
150 
       (int_data_d1[31:16]==16'h013f || int_data_d1[31:16]==16'h0140))
151 10 edn_walter 
      ptp_l4 <= 1'b1;
152 
 
153 
    // check if it is PTP Event message
154 12 edn_walter 
    if      (int_valid_d1 && (int_cnt==10'd3 || bypass_vlan && int_cnt==10'd4) && int_data_d1[31:16]==16'h88F7    &&
155 
            (int_data_d1[11: 8]== 4'h0 || int_data_d1[11:8]==4'h2))
156 10 edn_walter 
      // ptp_message_id == sync || delay_req
157 
      ptp_event <= 1'b1;
158 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 &&
159 
            (int_data_d1[11: 8]== 4'h0 || int_data_d1[11:8]==4'h2))
160 10 edn_walter 
      // ptp_message_id == sync || delay_req
161 
      ptp_event <= 1'b1;
162 
  end
163 
end
164 
 
165 
always @(posedge rst or posedge clk) begin
166 
  if (rst) begin
167 7 edn_walter 
    ptp_msgid <= 4'd0;
168 8 edn_walter 
    ptp_seqid <= 16'd0;
169 4 ash_riple 
  end
170 10 edn_walter 
  else if (int_valid_d1 && int_sop_d1) begin
171 7 edn_walter 
    ptp_msgid <= 4'd0;
172 8 edn_walter 
    ptp_seqid <= 16'd0;
173 4 ash_riple 
  end
174 
  else begin
175 10 edn_walter 
    // get PTP identification information as additional information to Timestamp
176 
    // message id
177 
    if      (int_valid_d1 && int_cnt==10'd3 && int_data_d1[31:16]==16'h88F7)
178 
      ptp_msgid <=   int_data_d1[11: 8];
179 
    else if (int_valid_d1 && int_cnt==10'd4 && bypass_udp_cnt==10'd1 && ptp_l4)
180 
      ptp_msgid <=   int_data_d1[11: 8];
181 
    // sequence id
182 
    if      (int_valid_d1 && int_cnt==10'd11 && ptp_l2)
183 
      ptp_seqid <=   int_data_d1[31:16];
184 
    else if (int_valid_d1 && int_cnt==10'd10 && ptp_l4)
185 
      ptp_seqid <=   int_data_d1[31:16];
186 4 ash_riple 
  end
187 
end
188 
 
189 
always @(posedge rst or posedge clk) begin
190 
  if (rst) begin
191 
    ptp_found <=  1'b0;
192 27 edn_walter 
    ptp_infor <= 20'd0;
193 4 ash_riple 
  end
194 10 edn_walter 
  else if (int_valid_d1 && int_sop_d1) begin
195 4 ash_riple 
    ptp_found <=  1'b0;
196 27 edn_walter 
    ptp_infor <= 20'd0;
197 4 ash_riple 
  end
198 10 edn_walter 
  else if (int_valid_d1 && int_eop_d1) begin
199 4 ash_riple 
    ptp_found <=  ptp_event;
200 27 edn_walter 
    ptp_infor <= {ptp_seqid, ptp_msgid};  // 16+4
201 4 ash_riple 
  end
202 
  else begin
203 
    ptp_found <=  1'b0;
204 27 edn_walter 
    ptp_infor <= 20'd0;
205 4 ash_riple 
  end
206 
end
207 
 
208 
endmodule

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