verif/env/common/vera/niu_ippktgen/htp_db.vr

// ========== Copyright Header Begin ==========================================
//
// OpenSPARC T2 Processor File: htp_db.vr
// Copyright (C) 1995-2007 Sun Microsystems, Inc. All Rights Reserved
// 4150 Network Circle, Santa Clara, California 95054, U.S.A.
//
// * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; version 2 of the License.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
//
// For the avoidance of doubt, and except that if any non-GPL license
// choice is available it will apply instead, Sun elects to use only
// the General Public License version 2 (GPLv2) at this time for any
// software where a choice of GPL license versions is made
// available with the language indicating that GPLv2 or any later version
// may be used, or where a choice of which version of the GPL is applied is
// otherwise unspecified.
//
// Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
// CA 95054 USA or visit www.sun.com if you need additional information or
// have any questions.
//
// ========== Copyright Header End ============================================
#define HTP_DB

class htp_db {

    //=======================================================
    //=   HTP Transmitter Descriptor structure            ===
    //=======================================================

    bit [13:0] packet_length                    = 14'h0040; // packet_length

    bit [13:0] buffer_length[];                             // buffer_length

    bit [4:0] chksum_start                      = 5'h00;  // check sum start

    bit [7:0] chksum_stuff                      = 8'h00;  // check sum stuff

    bit chksum_enable                           = 1'b1;  // check sum enable

    bit no_crc                                  = 1'b1;  // when set crc not inserted
                                                         // into the outgoing frame

    bit int_me                                  = 1'b0; // when set TX_INT_ME
                                                        // will be set upon
                                                        // loading the entire
                                                        // frame into the TX_FIFO


    bit [3:0] qos                               = 4'h0; // service level of packet


    bit [7:0] qp                                = 8'h00;


    bit [3:0] fdst                              = 4'h0; // final destination
                                                        // 4'b0000      - None
                                                        // 4'b0001      - IB
                                                        // 4'b0010      - Network
                                                        // 4'b1000      - IPSec
                                                        // 4'b1010      - TE
                                                        // 4'b1011      - CPU

    bit [3:0] idst                              = 4'h0; // initial destination


    bit [3:0] pkt_src                           = 4'h0; // Packet source
                                                        // 4'b0000      - None
                                                        // 4'b0001      - IB
                                                        // 4'b0010      - Network
                                                        // 4'b1000      - IPSec
                                                        // 4'b1010      - TE
                                                        // 4'b1011      - CPU

    bit [3:0]  pkt_type                         = 4'bx;  // Packet type
                                                         // 4'b0xxx  - Reserved
                                                         // 4'b0001  - IB Management
                                                         // 4'b0010  - Ethernet Packet
                                                         // 4'b0011  - IPSec(decrypted)
                                                         // 4'b0100  - IPSec(encrypted)
                                                         // 4'b0101  - Reserved
                                                         // 4'b0110  - TCP Termiantion
                                                         // 4'b0111  - Rdma Read
                                                         // 4'b1000  - Rdma Write
                                                         // 4'b1001  - CPU-host management packet
                                                         //          - for other QP(2-127)

    bit [7:0] packet_type                     =8'hxx;   // irx_packet type

    bit [7:0] dst_port                         = 8'hxx;  // destination mac port sent to irx cntrl wd

    bit [7:0] ib_dst_port                         = 8'hxx;  // destination mac port sent to irx cntrl wd

    bit eop[]; // End of packet

    bit sop[]; // Start of packet

    bit [6:0] mac_index;                                 // mac_index

    bit ib_port;                                         // ib port

    bit [1:0] mac_port;                                  // mac port

    // fields of the IRX CONTROL WD

    bit [15:0]  chksum_data                     = 16'h0000;

    bit [10:0]  bucket_cnt                      = 11'h000;

    bit [10:0]  eop_offset                      = 11'h000;

    bit [3:0]   VL                              = 4'h00;

    bit [6:0]   data_offset                     = 7'h00;

    bit         single_bkt                      = 1'b0;

    bit         strip                           = 1'b0;

    bit [5:0]   reserved                        = 6'h00;

    bit [127:0]  status_wd                      = 128'b0;  // status word for IRX INTF

    bit          bad_pkt                        = 1'b0;   // bad pkt bit

    bit [1:0]    la4_prot                       = 2'b00; // 00 -> uninterested
                                                         // 01 -> tcp
                                                         // 10 -> udp
                                                         // 11 -> reserved

    bit [1:0]    la3_vers                       = 2'b00; // 00 -> uninterested
                                                         // 01 -> ipv4
                                                         // 10 -> ipv6
                                                         // 11 -> reserved

    bit [2:0]    la2_opti                       = 3'b000; // 000 -> ethernet
                                                          // 001 -> vlan
                                                          // 010 -> llc
                                                          // 011 -> vlan-llc
                                                          // 1xx -> oc192

    // adding the null pkt bit

    bit null_pkt                                 = 1'b0; // default not a null pkt
                                                         // if set to 1 null pkt

    bit err_pkt                                  = 1'b0; // default not a err pkt
                                                         // if set to 1 err_pkt

    bit no_sop_pkt                               = 1'b0; // default the pkt has sop
                                                         // if set to 1 no sop

    bit no_eop_pkt                               = 1'b0; // default the pkt has eop
                                                         // if set to 1 no eop

    bit pkt_len_err                              = 1'b0; // default pkt has no len err
                                                         // if 1 pkt has len err

    // bit [127:0]  htp_txdesc                     = 128'hx; // This is the descriptor
                                                          // written into the host memory

    // bit [127:0] htp_irx_ctrlwd                  = 128'hx; // This is the control word
                                                          // passed to IRX by HTP

    // new bits of IBTP control word1 (BMC)

   bit [4:0] ipsec_reserved = 5'h00;
   bit [2:0] ipsec_reserved2 = 3'b000;
   bit [5:0] ipsec_reserved3 = 5'h00;
   bit [15:0] tcp_chksum = 16'hffff;
   bit tcp_fullchksum_ok = 1'b1;
   bit tcp_fullchksum = 1'b1;
   bit partial_chksum = 1'b0;
   bit ip_hdr_chksum_ok = 1'b0;
   bit [7:0] ipsec_mac_index = 8'h00;
   bit [11:0] mac_default = 12'h000;
   bit [3:0] ipsec_mac_port = 4'hf;
   bit jumbo_pkt = 1'b0;
   bit [10:0] ipsec_eop_offset = 11'h000;
   bit [10:0] ipsec_bucket_cnt = 11'h000;

    // other bits for the control word two

 bit [7:0] QPN_bypass = 8'h00;
 bit [1:0] mode_bit = 2'b00;
 bit [7:0] hdr_len = 8'h00;
 bit       use_mc_index = 1'b0;
 bit [15:0] tt_index = 16'h0000;
 bit [31:0] TCP_seq = 32'h0000_0000;
 bit [15:0] tcp_seg_len = 16'h0000;
 bit        push_bit = 1'b0;
 bit        TOE_wbn = 1'b0;
 bit [12:0] first_bkt_ptr = 13'h0000;
 bit [12:0] last_bkt_ptr = 13'h0000;

   // htp-fflp driver values after the look up

 // cycle one data

 bit multicast = 1'b0;
 bit [2:0] l2_option = 3'b000;
 bit [1:0] l3_option = 2'b01;
 bit [1:0] l4_option = 2'b01;
 bit [3:0] l4_hdr_len = 4'h0;
 bit solicited_event = 1'b0;
 bit [31:0] seq_num = 32'h0000_0000;

 // cycle two data

 bit [15:0] cam_index = 16'h0000;

 // cycle three data

 bit drop_pkt = 1'b0;
 bit [1:0] pkt_dest = 2'b00;
 bit [1:0] pkt_mode = 2'b00;
 bit vlan_match = 1'b0;
 bit cfg_def_vlan_ena = 1'b0;
 bit reserved_fflp = 1'b0;
 bit [7:0] ehp_qp_info = 8'h00;
 bit cam_match = 1'b0;


 // completion data handle

 integer comp_data = 1;
 bit     last_pkt = 1'b0;

 // buffer pointer of the pkt

 bit [39:0] buffer_ptr = 40'h00_00000_0000;

 bit [15:0] comp_offset = 16'h0000;

    // adding the task definition

    task new();

    function bit [127:0] get_tx_descriptor(bit [39:0] pkt_bufptr, integer i);

    function bit [127:0] get_htp_irx_ctrlwd();

    function bit [31:0] get_irx_route_tag();

    function bit [127:0] get_status_wd();

    // functions to get the control word for htp_bmc in case of IPSED decrypted packet

    function bit [127:0] get_htp_bmc_ctrlwd1();

    function bit [127:0] get_htp_bmc_ctrlwd2();

    // completion wr back word

    function bit [127:0] get_comp_wrbk_wd(integer buf_indx, bit [1:0] chnl);

} // end of class htp_txdesc_db


// initializing the commonc parameters

task htp_db :: new ()
{
  integer i,j,k;

  printf("Intializing the buffer length array\n");
  for(i=0;i<128;i++) {
     buffer_length[i] = 14'h0000;
   }

  printf("Intializing the EOP array\n");
  for(j=0;j<128;j++) {
     eop[j] = 1'b0;
  }

  printf("Intializing the SOP array\n");
  for(k=0;k<128;k++) {
     sop[k] = 1'b0;
  }
}

function bit [127:0] htp_db :: get_tx_descriptor(bit [39:0] pkt_bufptr, integer i)
{
  bit [127:0] htp_txdesc;

  // idst = fdst;

  htp_txdesc = {ib_port,
                mac_port,
                mac_index,
                packet_length,
                pkt_bufptr,
                sop[i],
                eop[i],
                pkt_type,
                pkt_src,
                idst,
                fdst,
                qos,
                qp,
                VL,
                int_me,
                no_crc,
                chksum_enable,
                chksum_stuff,
                chksum_start,
                buffer_length[i]};

  buffer_ptr = pkt_bufptr;
  get_tx_descriptor = htp_txdesc;
}

function bit [127:0] htp_db :: get_htp_irx_ctrlwd()
{
  bit [127:0] htp_irx_ctrlwd;

  dst_port = {6'h00,mac_port};

  case(pkt_type) {
  4'b0000 : packet_type = 8'b0xxx_xxxx;
  4'b0001 : packet_type = 8'b1000_0001;
  4'b0010 : packet_type = 8'b1000_0010;
  4'b0011 : packet_type = 8'b1000_0011;
  4'b0100 : packet_type = 8'b1000_0100;
  4'b0101 : packet_type = 8'b1000_0101;
  4'b0110 : packet_type = 8'b1000_0110;
  4'b0111 : packet_type = 8'b1000_0111;
  4'b1000 : packet_type = 8'b1000_1000;
  4'b1001 : packet_type = 8'b1000_1001;
  }


 // idst = fdst;

  htp_irx_ctrlwd = {packet_type,
                    pkt_src,
                    idst,
                    fdst,
                    dst_port,
                    2'b00,qos[1:0],
                    chksum_enable,
                    chksum_stuff,
                    qos[2],chksum_start,
                    chksum_data,
                    bucket_cnt,
                    eop_offset,
                    ib_port,
                    VL,
                    qp,
                    data_offset,
                    packet_length,
                    no_crc,
                    single_bkt,
                    strip,
                    reserved};

  get_htp_irx_ctrlwd = htp_irx_ctrlwd;
}

function bit [31:0] htp_db :: get_irx_route_tag()
{
  bit [31:0] htp_irx_route_tag;

  // idst = fdst;

  htp_irx_route_tag = {packet_type,pkt_src,idst,fdst,dst_port,qos};

  get_irx_route_tag = htp_irx_route_tag;
}


// status word for IRX interface

function bit [127:0] htp_db :: get_status_wd()
{
  bit [127:0] htp_irx_status_wd;

  htp_irx_status_wd = {bad_pkt,111'b0,chksum_data};

  get_status_wd = htp_irx_status_wd;
}

// this is used for IPSEC packet in the TCP flow mode going to the IB_PORT

function bit [127:0] htp_db :: get_htp_bmc_ctrlwd1()
{
  bit [127:0] htp_bmc_ctrlwd1;

  // dst_port = {6'h00,mac_port};

  case(pkt_type) {
  4'b0000 : packet_type = 8'b0xxx_xxxx;
  4'b0001 : packet_type = 8'b1000_0001;
  4'b0010 : packet_type = 8'b1000_0010;
  4'b0011 : packet_type = 8'b1000_0011;
  4'b0100 : packet_type = 8'b1000_0100;
  4'b0101 : packet_type = 8'b1000_0101;
  4'b0110 : packet_type = 8'b1000_0110;
  4'b0111 : packet_type = 8'b1000_0111;
  4'b1000 : packet_type = 8'b1000_1000;
  4'b1001 : packet_type = 8'b1000_1001;
  }


  htp_bmc_ctrlwd1 = {packet_type,
                     pkt_src,
                     idst,
                     fdst,
                     ib_dst_port,
                     qos,
                     ipsec_reserved3,
                     jumbo_pkt,
                     ipsec_mac_port,
                     mac_default,
                     ipsec_mac_index,
                     ipsec_bucket_cnt,
                     ipsec_eop_offset,
                     ip_hdr_chksum_ok,
                     partial_chksum,
                     tcp_fullchksum,
                     tcp_fullchksum_ok,
                     tcp_chksum,
                     packet_length,
                     ipsec_reserved2,1'b0,
                     ipsec_reserved};

  get_htp_bmc_ctrlwd1 = htp_bmc_ctrlwd1;
}

// this is used for IPSEC packet in the TCP flow mode going to the IB_PORT

function bit [127:0] htp_db :: get_htp_bmc_ctrlwd2()
{
  bit [127:0] htp_bmc_ctrlwd2;

  // mode_bit = chksum_start[4:3];
  // use_mc_index = chksum_start[2];
  // push_bit = chksum_start[1];
  // TOE_wbn = chksum_start[0];


 htp_bmc_ctrlwd2 = {1'b0,
                    last_bkt_ptr,
                    first_bkt_ptr,
                    TOE_wbn,
                    push_bit,
                    tcp_seg_len,
                    TCP_seq,
                    tt_index,
                    use_mc_index,
                    hdr_len,
                    2'b00,packet_length,
                    mode_bit,
                    QPN_bypass};


  get_htp_bmc_ctrlwd2 = htp_bmc_ctrlwd2;
}


//--------------------------------------------------
//----- comp write back word function --------------
//--------------------------------------------------

function bit [127:0] htp_db :: get_comp_wrbk_wd(integer buf_indx, bit [1:0] chnl)
{
  bit [127:0] htp_cp_wrbk_wd;
  comp_offset = buf_indx;

  htp_cp_wrbk_wd = {
                     pkt_type,
                     pkt_src,
                     idst,
                     fdst,
                     8'h0,
                     buffer_ptr,
                     2'b00,
                     packet_length,
                     2'b00,
                     buffer_length[buf_indx],
                     sop[buf_indx],
                     eop[buf_indx],
                     1'b0,
                     err_pkt,
                     2'b00,
                     chnl,
                     qp,
                     comp_offset
                   };

   get_comp_wrbk_wd = htp_cp_wrbk_wd;
}