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alfoltran |
/////////////////////////////////////////////////////////////////////
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//// ////
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//// USB Protocol Engine ////
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//// Performs automatic protocol functions ////
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//// ////
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//// SystemC Version: usb_pe_sie.cpp ////
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//// Author: Alfredo Luiz Foltran Fialho ////
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//// alfoltran@ig.com.br ////
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//// ////
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//// ////
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/////////////////////////////////////////////////////////////////////
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//// ////
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//// Verilog Version: usb1_pe.v ////
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//// Copyright (C) 2000-2002 Rudolf Usselmann ////
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//// www.asics.ws ////
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//// rudi@asics.ws ////
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//// ////
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//// This source file may be used and distributed without ////
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//// restriction provided that this copyright statement is not ////
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//// removed from the file and that any derivative work contains ////
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//// the original copyright notice and the associated disclaimer.////
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//// ////
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//// THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY ////
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//// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED ////
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//// TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS ////
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//// FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL THE AUTHOR ////
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//// OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, ////
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//// INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES ////
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//// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE ////
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//// GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR ////
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//// BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF ////
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//// LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT ////
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//// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT ////
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//// OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE ////
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//// POSSIBILITY OF SUCH DAMAGE. ////
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//// ////
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/////////////////////////////////////////////////////////////////////
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#include "systemc.h"
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#include "usb_pe_sie.h"
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// Endpoint/CSR Decoding
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void usb_pe_sie::csr_decoder(void) {
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IN_ep.write(csr.read()[9]);
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OUT_ep.write(csr.read()[10]);
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CTRL_ep.write(csr.read()[11]);
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txfr_iso.write(csr.read()[12]);
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txfr_bulk.write(csr.read()[13]);
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txfr_int.write(!csr.read()[12] && !csr.read()[13]);
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ep_type.write(csr.read().range(10, 9));
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txfr_type.write(csr.read().range(13, 12));
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}
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void usb_pe_sie::match_up(void) {
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match_r.write(match.read() && fsel.read());
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}
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// No such endpoint indicator
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void usb_pe_sie::nse_err_up(void) {
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nse_err.write(token_valid.read() && (pid_OUT.read() || pid_IN.read() || pid_SETUP.read()) && !match.read());
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}
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void usb_pe_sie::send_token_up(void) {
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send_token.write(send_token_d.read());
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}
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void usb_pe_sie::token_pid_sel_up(void) {
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token_pid_sel.write(token_pid_sel_d.read());
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}
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// Data PID storage
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void usb_pe_sie::ep0_dpid_up(void) {
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if (!rst.read())
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ep0_dpid.write(0);
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else if (uc_dpd_set.read() && (ep_sel.read() == 0))
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ep0_dpid.write(next_dpid.read());
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}
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void usb_pe_sie::ep1_dpid_up(void) {
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if (!rst.read())
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ep1_dpid.write(0);
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else if (uc_dpd_set.read() && (ep_sel.read() == 1))
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ep1_dpid.write(next_dpid.read());
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}
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void usb_pe_sie::ep2_dpid_up(void) {
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if (!rst.read())
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ep2_dpid.write(0);
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else if (uc_dpd_set.read() && (ep_sel.read() == 2))
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ep2_dpid.write(next_dpid.read());
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}
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void usb_pe_sie::ep3_dpid_up(void) {
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if (!rst.read())
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ep3_dpid.write(0);
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else if (uc_dpd_set.read() && (ep_sel.read() == 3))
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ep3_dpid.write(next_dpid.read());
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}
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void usb_pe_sie::ep4_dpid_up(void) {
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if (!rst.read())
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ep4_dpid.write(0);
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else if (uc_dpd_set.read() && (ep_sel.read() == 4))
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ep4_dpid.write(next_dpid.read());
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}
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void usb_pe_sie::ep5_dpid_up(void) {
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if (!rst.read())
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ep5_dpid.write(0);
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else if (uc_dpd_set.read() && (ep_sel.read() == 5))
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ep5_dpid.write(next_dpid.read());
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}
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void usb_pe_sie::ep6_dpid_up(void) {
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if (!rst.read())
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ep6_dpid.write(0);
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else if (uc_dpd_set.read() && (ep_sel.read() == 6))
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ep6_dpid.write(next_dpid.read());
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}
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void usb_pe_sie::ep7_dpid_up(void) {
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if (!rst.read())
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ep7_dpid.write(0);
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else if (uc_dpd_set.read() && (ep_sel.read() == 7))
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ep7_dpid.write(next_dpid.read());
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}
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void usb_pe_sie::uc_dpd_up(void) {
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switch (ep_sel.read()) {
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case 0: uc_dpd.write(ep0_dpid.read()); break;
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case 1: uc_dpd.write(ep1_dpid.read()); break;
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case 2: uc_dpd.write(ep2_dpid.read()); break;
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case 3: uc_dpd.write(ep3_dpid.read()); break;
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case 4: uc_dpd.write(ep4_dpid.read()); break;
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case 5: uc_dpd.write(ep5_dpid.read()); break;
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case 6: uc_dpd.write(ep6_dpid.read()); break;
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case 7: uc_dpd.write(ep7_dpid.read()); break;
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}
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}
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// Data PID sequencer
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void usb_pe_sie::sq_statemachine(void) {
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sc_uint<8> sel1;
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sc_uint<5> sel2;
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sc_uint<2> sel_d1, sel_d2;
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// tr/mf:ep/type:tr/type:last dpd
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sel1 = ((sc_uint<2>)tr_fr_d.read(), (sc_uint<2>)ep_type.read(), (sc_uint<2>)txfr_type.read(), (sc_uint<2>)uc_dpd.read());
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// CTRL Endpoint Selector
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sel2 = ((sc_uint<1>)setup_token.read(), (sc_uint<1>)in_op.read(), (sc_uint<1>)out_op.read(), (sc_uint<2>)uc_dpd.read());
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// Sync1 Selector
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sel_d1 = ((sc_uint<1>)pid_MDATA.read(), (sc_uint<1>)pid_DATA1.read());
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// Sync2 Selector
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sel_d2 = ((sc_uint<1>)pid_MDATA.read(), (sc_uint<1>)pid_DATA2.read());
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switch (sel1) {// synopsys full_case parallel_case
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// 0X_01_01_XX -> ISO txfr. IN, 1 tr/mf
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case 0x14:
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case 0x15:
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case 0x16:
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case 0x17:
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case 0x54:
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case 0x55:
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case 0x56:
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case 0x57: next_dpid.write(0);
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break;
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// 10_01_01_X0 -> ISO txfr. IN, 2 tr/mf
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case 0x94:
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case 0x96: next_dpid.write(1);
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break;
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// 10_01_01_X1 -> ISO txfr. IN, 2 tr/mf
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case 0x95:
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case 0x97: next_dpid.write(0);
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break;
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// 11_01_01_00 -> ISO txfr. IN, 3 tr/mf
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case 0xd4: next_dpid.write(1);
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break;
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// 11_01_01_01 -> ISO txfr. IN, 3 tr/mf
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case 0xd5: next_dpid.write(2);
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break;
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// 11_01_01_10 -> ISO txfr. IN, 3 tr/mf
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case 0xd6: next_dpid.write(0);
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break;
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// 0X_10_01_XX -> ISO txfr. OUT, 1 tr/mf
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case 0x24:
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case 0x25:
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case 0x26:
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case 0x27:
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case 0x64:
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case 0x65:
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case 0x66:
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case 0x67: next_dpid.write(0);
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break;
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// 10_10_01_XX -> ISO txfr. OUT, 2 tr/mf
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case 0xa4:
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case 0xa5:
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case 0xa6: // Resynchronize in case of PID error
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case 0xa7: switch (sel_d1) {// synopsys full_case parallel_case
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case 2: next_dpid.write(1); break;
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case 1: next_dpid.write(0); break;
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}
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break;
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// 11_10_01_00 -> ISO txfr. OUT, 3 tr/mf
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case 0xe4: // Resynchronize in case of PID error
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switch (sel_d2) {// synopsys full_case parallel_case
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case 2: next_dpid.write(1); break;
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| 219 |
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case 1: next_dpid.write(0); break;
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}
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| 221 |
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break;
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// 11_10_01_01 -> ISO txfr. OUT, 3 tr/mf
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case 0xe5: // Resynchronize in case of PID error
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switch (sel_d2) {// synopsys full_case parallel_case
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case 2: next_dpid.write(2); break;
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| 227 |
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case 1: next_dpid.write(0); break;
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| 228 |
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}
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| 229 |
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break;
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| 230 |
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| 231 |
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// 11_10_01_10 -> ISO txfr. OUT, 3 tr/mf
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case 0xe6: // Resynchronize in case of PID error
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switch (sel_d2) {// synopsys full_case parallel_case
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| 234 |
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case 2: next_dpid.write(1); break;
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| 235 |
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case 1: next_dpid.write(0); break;
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| 236 |
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}
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| 237 |
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break;
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| 238 |
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| 239 |
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// XX_01_00_X0 or XX_10_00_X0 -> IN/OUT endpoint only
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case 0x10:
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| 241 |
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case 0x12:
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| 242 |
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case 0x50:
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| 243 |
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case 0x52:
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| 244 |
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case 0x90:
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| 245 |
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case 0x92:
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| 246 |
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case 0xd0:
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| 247 |
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case 0xd2:
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| 248 |
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case 0x20:
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| 249 |
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case 0x22:
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| 250 |
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case 0x60:
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| 251 |
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case 0x62:
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| 252 |
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case 0xa0:
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| 253 |
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case 0xa2:
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| 254 |
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case 0xe0:
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| 255 |
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case 0xe2: next_dpid.write(1); // INT transfers
|
| 256 |
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break;
|
| 257 |
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|
| 258 |
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// XX_01_00_X1 or XX_10_00_X1 -> IN/OUT endpoint only
|
| 259 |
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case 0x11:
|
| 260 |
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case 0x13:
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| 261 |
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case 0x51:
|
| 262 |
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case 0x53:
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| 263 |
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case 0x91:
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| 264 |
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case 0x93:
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| 265 |
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case 0xd1:
|
| 266 |
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case 0xd3:
|
| 267 |
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case 0x21:
|
| 268 |
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case 0x23:
|
| 269 |
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|
case 0x61:
|
| 270 |
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case 0x63:
|
| 271 |
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case 0xa1:
|
| 272 |
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case 0xa3:
|
| 273 |
|
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case 0xe1:
|
| 274 |
|
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case 0xe3: next_dpid.write(0); // INT transfers
|
| 275 |
|
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break;
|
| 276 |
|
|
|
| 277 |
|
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// XX_01_10_X0 or XX_10_10_X0 -> IN/OUT endpoint only
|
| 278 |
|
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case 0x18:
|
| 279 |
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case 0x1a:
|
| 280 |
|
|
case 0x58:
|
| 281 |
|
|
case 0x5a:
|
| 282 |
|
|
case 0x98:
|
| 283 |
|
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case 0x9a:
|
| 284 |
|
|
case 0xd8:
|
| 285 |
|
|
case 0xda:
|
| 286 |
|
|
case 0x28:
|
| 287 |
|
|
case 0x2a:
|
| 288 |
|
|
case 0x68:
|
| 289 |
|
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case 0x6a:
|
| 290 |
|
|
case 0xa8:
|
| 291 |
|
|
case 0xaa:
|
| 292 |
|
|
case 0xe8:
|
| 293 |
|
|
case 0xea: next_dpid.write(1); // BULK transfers
|
| 294 |
|
|
break;
|
| 295 |
|
|
|
| 296 |
|
|
// XX_01_10_X1 or XX_10_10_X1 -> IN/OUT endpoint only
|
| 297 |
|
|
case 0x19:
|
| 298 |
|
|
case 0x1b:
|
| 299 |
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|
case 0x59:
|
| 300 |
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case 0x5b:
|
| 301 |
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case 0x99:
|
| 302 |
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case 0x9b:
|
| 303 |
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case 0xd9:
|
| 304 |
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case 0xdb:
|
| 305 |
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case 0x29:
|
| 306 |
|
|
case 0x2b:
|
| 307 |
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case 0x69:
|
| 308 |
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case 0x6b:
|
| 309 |
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case 0xa9:
|
| 310 |
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case 0xab:
|
| 311 |
|
|
case 0xe9:
|
| 312 |
|
|
case 0xeb: next_dpid.write(0); // BULK transfers
|
| 313 |
|
|
break;
|
| 314 |
|
|
|
| 315 |
|
|
// XX_00_XX_XX -> CTRL Endpoint
|
| 316 |
|
|
case 0x00: case 0x01: case 0x02: case 0x03: case 0x04: case 0x05: case 0x06: case 0x07:
|
| 317 |
|
|
case 0x08: case 0x09: case 0x0a: case 0x0b: case 0x0c: case 0x0d: case 0x0e: case 0x0f:
|
| 318 |
|
|
case 0x40: case 0x41: case 0x42: case 0x43: case 0x44: case 0x45: case 0x46: case 0x47:
|
| 319 |
|
|
case 0x48: case 0x49: case 0x4a: case 0x4b: case 0x4c: case 0x4d: case 0x4e: case 0x4f:
|
| 320 |
|
|
case 0x80: case 0x81: case 0x82: case 0x83: case 0x84: case 0x85: case 0x86: case 0x87:
|
| 321 |
|
|
case 0x88: case 0x89: case 0x8a: case 0x8b: case 0x8c: case 0x8d: case 0x8e: case 0x8f:
|
| 322 |
|
|
case 0xc0: case 0xc1: case 0xc2: case 0xc3: case 0xc4: case 0xc5: case 0xc6: case 0xc7:
|
| 323 |
|
|
case 0xc8: case 0xc9: case 0xca: case 0xcb: case 0xcc: case 0xcd: case 0xce: case 0xcf:
|
| 324 |
|
|
switch (sel2) {// synopsys full_case parallel_case
|
| 325 |
|
|
|
| 326 |
|
|
// 1_XX_XX -> SETUP operation
|
| 327 |
|
|
case 0x10:
|
| 328 |
|
|
case 0x11:
|
| 329 |
|
|
case 0x12:
|
| 330 |
|
|
case 0x13:
|
| 331 |
|
|
case 0x14:
|
| 332 |
|
|
case 0x15:
|
| 333 |
|
|
case 0x16:
|
| 334 |
|
|
case 0x17:
|
| 335 |
|
|
case 0x18:
|
| 336 |
|
|
case 0x19:
|
| 337 |
|
|
case 0x1a:
|
| 338 |
|
|
case 0x1b:
|
| 339 |
|
|
case 0x1c:
|
| 340 |
|
|
case 0x1d:
|
| 341 |
|
|
case 0x1e:
|
| 342 |
|
|
case 0x1f: next_dpid.write(3);
|
| 343 |
|
|
break;
|
| 344 |
|
|
|
| 345 |
|
|
// 0_10_0X -> IN operation
|
| 346 |
|
|
case 0x08:
|
| 347 |
|
|
case 0x09: next_dpid.write(3);
|
| 348 |
|
|
break;
|
| 349 |
|
|
|
| 350 |
|
|
// 0_10_1X -> IN operation
|
| 351 |
|
|
case 0x0a:
|
| 352 |
|
|
case 0x0b: next_dpid.write(1);
|
| 353 |
|
|
break;
|
| 354 |
|
|
|
| 355 |
|
|
// 0_01_X0 -> OUT operation
|
| 356 |
|
|
case 0x04:
|
| 357 |
|
|
case 0x06: next_dpid.write(3);
|
| 358 |
|
|
break;
|
| 359 |
|
|
|
| 360 |
|
|
// 0_01_X1 -> OUT operation
|
| 361 |
|
|
case 0x05:
|
| 362 |
|
|
case 0x07: next_dpid.write(2);
|
| 363 |
|
|
break;
|
| 364 |
|
|
}
|
| 365 |
|
|
break;
|
| 366 |
|
|
}
|
| 367 |
|
|
}
|
| 368 |
|
|
|
| 369 |
|
|
// Current PID decoder
|
| 370 |
|
|
// Allow any PID for ISO transfers when mode full speed or tr_fr is zero
|
| 371 |
|
|
void usb_pe_sie::allow_pid_up(void) {
|
| 372 |
|
|
sc_uint<4> sel;
|
| 373 |
|
|
|
| 374 |
|
|
sel = ((sc_uint<1>)pid_DATA0.read(), (sc_uint<1>)pid_DATA1.read(), (sc_uint<1>)pid_DATA2.read(), (sc_uint<1>)pid_MDATA.read());
|
| 375 |
|
|
|
| 376 |
|
|
switch (sel) {// synopsys full_case parallel_case
|
| 377 |
|
|
// 1000
|
| 378 |
|
|
case 8: allow_pid.write(0); break;
|
| 379 |
|
|
// 0100
|
| 380 |
|
|
case 4: allow_pid.write(1); break;
|
| 381 |
|
|
// 0010
|
| 382 |
|
|
case 2: allow_pid.write(2); break;
|
| 383 |
|
|
// 0001
|
| 384 |
|
|
case 1: allow_pid.write(3); break;
|
| 385 |
|
|
}
|
| 386 |
|
|
}
|
| 387 |
|
|
|
| 388 |
|
|
void usb_pe_sie::this_dpid_up(void) {
|
| 389 |
|
|
sc_uint<8> sel1;
|
| 390 |
|
|
sc_uint<5> sel2;
|
| 391 |
|
|
|
| 392 |
|
|
// tr/mf:ep/type:tr/type:last dpd
|
| 393 |
|
|
sel1 = ((sc_uint<2>)tr_fr_d.read(), (sc_uint<2>)ep_type.read(), (sc_uint<2>)txfr_type.read(), (sc_uint<2>)uc_dpd.read());
|
| 394 |
|
|
|
| 395 |
|
|
// CTRL Endpoint Selector
|
| 396 |
|
|
sel2 = ((sc_uint<1>)setup_token.read(), (sc_uint<1>)in_op.read(), (sc_uint<1>)out_op.read(), (sc_uint<2>)uc_dpd.read());
|
| 397 |
|
|
|
| 398 |
|
|
switch (sel1) {// synopsys full_case parallel_case
|
| 399 |
|
|
|
| 400 |
|
|
// 0X_01_01_XX -> ISO txfr. IN, 1 tr/mf
|
| 401 |
|
|
case 0x14:
|
| 402 |
|
|
case 0x15:
|
| 403 |
|
|
case 0x16:
|
| 404 |
|
|
case 0x17:
|
| 405 |
|
|
case 0x54:
|
| 406 |
|
|
case 0x55:
|
| 407 |
|
|
case 0x56:
|
| 408 |
|
|
case 0x57: this_dpid.write(0);
|
| 409 |
|
|
break;
|
| 410 |
|
|
|
| 411 |
|
|
// 10_01_01_X0 -> ISO txfr. IN, 2 tr/mf
|
| 412 |
|
|
case 0x94:
|
| 413 |
|
|
case 0x96: this_dpid.write(1);
|
| 414 |
|
|
break;
|
| 415 |
|
|
|
| 416 |
|
|
// 10_01_01_X1 -> ISO txfr. IN, 2 tr/mf
|
| 417 |
|
|
case 0x95:
|
| 418 |
|
|
case 0x97: this_dpid.write(0);
|
| 419 |
|
|
break;
|
| 420 |
|
|
|
| 421 |
|
|
// 11_01_01_00 -> ISO txfr. IN, 3 tr/mf
|
| 422 |
|
|
case 0xd4: this_dpid.write(2);
|
| 423 |
|
|
break;
|
| 424 |
|
|
|
| 425 |
|
|
// 11_01_01_01 -> ISO txfr. IN, 3 tr/mf
|
| 426 |
|
|
case 0xd5: this_dpid.write(1);
|
| 427 |
|
|
break;
|
| 428 |
|
|
|
| 429 |
|
|
// 11_01_01_10 -> ISO txfr. IN, 3 tr/mf
|
| 430 |
|
|
case 0xd6: this_dpid.write(0);
|
| 431 |
|
|
break;
|
| 432 |
|
|
|
| 433 |
|
|
// 00_10_01_XX -> ISO txfr. OUT, 0 tr/mf
|
| 434 |
|
|
case 0x24:
|
| 435 |
|
|
case 0x25:
|
| 436 |
|
|
case 0x26:
|
| 437 |
|
|
case 0x27: this_dpid.write(allow_pid.read());
|
| 438 |
|
|
break;
|
| 439 |
|
|
|
| 440 |
|
|
// 01_10_01_XX -> ISO txfr. OUT, 1 tr/mf
|
| 441 |
|
|
case 0x64:
|
| 442 |
|
|
case 0x65:
|
| 443 |
|
|
case 0x66:
|
| 444 |
|
|
case 0x67: this_dpid.write(0);
|
| 445 |
|
|
break;
|
| 446 |
|
|
|
| 447 |
|
|
// 10_10_01_X0 -> ISO txfr. OUT, 2 tr/mf
|
| 448 |
|
|
case 0xa4:
|
| 449 |
|
|
case 0xa6: this_dpid.write(3);
|
| 450 |
|
|
break;
|
| 451 |
|
|
|
| 452 |
|
|
// 10_10_01_X1 -> ISO txfr. OUT, 2 tr/mf
|
| 453 |
|
|
case 0xa5:
|
| 454 |
|
|
case 0xa7: this_dpid.write(1);
|
| 455 |
|
|
break;
|
| 456 |
|
|
|
| 457 |
|
|
// 11_10_01_00 -> ISO txfr. OUT, 3 tr/mf
|
| 458 |
|
|
case 0xe4: this_dpid.write(3);
|
| 459 |
|
|
break;
|
| 460 |
|
|
|
| 461 |
|
|
// 11_10_01_01 -> ISO txfr. OUT, 3 tr/mf
|
| 462 |
|
|
case 0xe5: this_dpid.write(3);
|
| 463 |
|
|
break;
|
| 464 |
|
|
|
| 465 |
|
|
// 11_10_01_10 -> ISO txfr. OUT, 3 tr/mf
|
| 466 |
|
|
case 0xe6: this_dpid.write(2);
|
| 467 |
|
|
break;
|
| 468 |
|
|
|
| 469 |
|
|
// XX_01_00_X0 or XX_10_00_X0 -> IN/OUT endpoint only
|
| 470 |
|
|
case 0x10:
|
| 471 |
|
|
case 0x12:
|
| 472 |
|
|
case 0x50:
|
| 473 |
|
|
case 0x52:
|
| 474 |
|
|
case 0x90:
|
| 475 |
|
|
case 0x92:
|
| 476 |
|
|
case 0xd0:
|
| 477 |
|
|
case 0xd2:
|
| 478 |
|
|
case 0x20:
|
| 479 |
|
|
case 0x22:
|
| 480 |
|
|
case 0x60:
|
| 481 |
|
|
case 0x62:
|
| 482 |
|
|
case 0xa0:
|
| 483 |
|
|
case 0xa2:
|
| 484 |
|
|
case 0xe0:
|
| 485 |
|
|
case 0xe2: this_dpid.write(0); // INT transfers
|
| 486 |
|
|
break;
|
| 487 |
|
|
|
| 488 |
|
|
// XX_01_00_X1 or XX_10_00_X1 -> IN/OUT endpoint only
|
| 489 |
|
|
case 0x11:
|
| 490 |
|
|
case 0x13:
|
| 491 |
|
|
case 0x51:
|
| 492 |
|
|
case 0x53:
|
| 493 |
|
|
case 0x91:
|
| 494 |
|
|
case 0x93:
|
| 495 |
|
|
case 0xd1:
|
| 496 |
|
|
case 0xd3:
|
| 497 |
|
|
case 0x21:
|
| 498 |
|
|
case 0x23:
|
| 499 |
|
|
case 0x61:
|
| 500 |
|
|
case 0x63:
|
| 501 |
|
|
case 0xa1:
|
| 502 |
|
|
case 0xa3:
|
| 503 |
|
|
case 0xe1:
|
| 504 |
|
|
case 0xe3: this_dpid.write(1); // INT transfers
|
| 505 |
|
|
break;
|
| 506 |
|
|
|
| 507 |
|
|
// XX_01_10_X0 or XX_10_10_X0 -> IN/OUT endpoint only
|
| 508 |
|
|
case 0x18:
|
| 509 |
|
|
case 0x1a:
|
| 510 |
|
|
case 0x58:
|
| 511 |
|
|
case 0x5a:
|
| 512 |
|
|
case 0x98:
|
| 513 |
|
|
case 0x9a:
|
| 514 |
|
|
case 0xd8:
|
| 515 |
|
|
case 0xda:
|
| 516 |
|
|
case 0x28:
|
| 517 |
|
|
case 0x2a:
|
| 518 |
|
|
case 0x68:
|
| 519 |
|
|
case 0x6a:
|
| 520 |
|
|
case 0xa8:
|
| 521 |
|
|
case 0xaa:
|
| 522 |
|
|
case 0xe8:
|
| 523 |
|
|
case 0xea: this_dpid.write(0); // BULK transfers
|
| 524 |
|
|
break;
|
| 525 |
|
|
|
| 526 |
|
|
// XX_01_10_X1 or XX_10_10_X1 -> IN/OUT endpoint only
|
| 527 |
|
|
case 0x19:
|
| 528 |
|
|
case 0x1b:
|
| 529 |
|
|
case 0x59:
|
| 530 |
|
|
case 0x5b:
|
| 531 |
|
|
case 0x99:
|
| 532 |
|
|
case 0x9b:
|
| 533 |
|
|
case 0xd9:
|
| 534 |
|
|
case 0xdb:
|
| 535 |
|
|
case 0x29:
|
| 536 |
|
|
case 0x2b:
|
| 537 |
|
|
case 0x69:
|
| 538 |
|
|
case 0x6b:
|
| 539 |
|
|
case 0xa9:
|
| 540 |
|
|
case 0xab:
|
| 541 |
|
|
case 0xe9:
|
| 542 |
|
|
case 0xeb: this_dpid.write(1); // BULK transfers
|
| 543 |
|
|
break;
|
| 544 |
|
|
|
| 545 |
|
|
// XX_00_XX_XX -> CTRL Endpoint
|
| 546 |
|
|
case 0x00: case 0x01: case 0x02: case 0x03: case 0x04: case 0x05: case 0x06: case 0x07:
|
| 547 |
|
|
case 0x08: case 0x09: case 0x0a: case 0x0b: case 0x0c: case 0x0d: case 0x0e: case 0x0f:
|
| 548 |
|
|
case 0x40: case 0x41: case 0x42: case 0x43: case 0x44: case 0x45: case 0x46: case 0x47:
|
| 549 |
|
|
case 0x48: case 0x49: case 0x4a: case 0x4b: case 0x4c: case 0x4d: case 0x4e: case 0x4f:
|
| 550 |
|
|
case 0x80: case 0x81: case 0x82: case 0x83: case 0x84: case 0x85: case 0x86: case 0x87:
|
| 551 |
|
|
case 0x88: case 0x89: case 0x8a: case 0x8b: case 0x8c: case 0x8d: case 0x8e: case 0x8f:
|
| 552 |
|
|
case 0xc0: case 0xc1: case 0xc2: case 0xc3: case 0xc4: case 0xc5: case 0xc6: case 0xc7:
|
| 553 |
|
|
case 0xc8: case 0xc9: case 0xca: case 0xcb: case 0xcc: case 0xcd: case 0xce: case 0xcf:
|
| 554 |
|
|
switch (sel2) {// synopsys full_case parallel_case
|
| 555 |
|
|
|
| 556 |
|
|
// 1_XX_XX -> SETUP operation
|
| 557 |
|
|
case 0x10:
|
| 558 |
|
|
case 0x11:
|
| 559 |
|
|
case 0x12:
|
| 560 |
|
|
case 0x13:
|
| 561 |
|
|
case 0x14:
|
| 562 |
|
|
case 0x15:
|
| 563 |
|
|
case 0x16:
|
| 564 |
|
|
case 0x17:
|
| 565 |
|
|
case 0x18:
|
| 566 |
|
|
case 0x19:
|
| 567 |
|
|
case 0x1a:
|
| 568 |
|
|
case 0x1b:
|
| 569 |
|
|
case 0x1c:
|
| 570 |
|
|
case 0x1d:
|
| 571 |
|
|
case 0x1e:
|
| 572 |
|
|
case 0x1f: this_dpid.write(0);
|
| 573 |
|
|
break;
|
| 574 |
|
|
|
| 575 |
|
|
// 0_10_0X -> IN operation
|
| 576 |
|
|
case 0x08:
|
| 577 |
|
|
case 0x09: this_dpid.write(0);
|
| 578 |
|
|
break;
|
| 579 |
|
|
|
| 580 |
|
|
// 0_10_1X -> IN operation
|
| 581 |
|
|
case 0x0a:
|
| 582 |
|
|
case 0x0b: this_dpid.write(1);
|
| 583 |
|
|
break;
|
| 584 |
|
|
|
| 585 |
|
|
// 0_01_X0 -> OUT operation
|
| 586 |
|
|
case 0x04:
|
| 587 |
|
|
case 0x06: this_dpid.write(0);
|
| 588 |
|
|
break;
|
| 589 |
|
|
|
| 590 |
|
|
// 0_01_X1 -> OUT operation
|
| 591 |
|
|
case 0x05:
|
| 592 |
|
|
case 0x07: this_dpid.write(1);
|
| 593 |
|
|
break;
|
| 594 |
|
|
}
|
| 595 |
|
|
break;
|
| 596 |
|
|
}
|
| 597 |
|
|
}
|
| 598 |
|
|
|
| 599 |
|
|
// Assign PID for outgoing packets
|
| 600 |
|
|
void usb_pe_sie::data_pid_sel_up(void) {
|
| 601 |
|
|
data_pid_sel.write(this_dpid.read());
|
| 602 |
|
|
}
|
| 603 |
|
|
|
| 604 |
|
|
// Verify PID for incoming data packets
|
| 605 |
|
|
void usb_pe_sie::pid_seq_err_up(void) {
|
| 606 |
|
|
pid_seq_err.write(!(((this_dpid.read() == 0) && pid_DATA0.read()) ||
|
| 607 |
|
|
((this_dpid.read() == 1) && pid_DATA1.read()) ||
|
| 608 |
|
|
((this_dpid.read() == 2) && pid_DATA2.read()) ||
|
| 609 |
|
|
((this_dpid.read() == 3) && pid_MDATA.read())));
|
| 610 |
|
|
}
|
| 611 |
|
|
|
| 612 |
|
|
// IDMA Setup and SRC/DEST Buffer Select
|
| 613 |
|
|
// For Control Endpoint things are different:
|
| 614 |
|
|
// buffer0 is used for OUT (incoming) data packets
|
| 615 |
|
|
// buffer1 is used for IN (outgoing) data packets
|
| 616 |
|
|
|
| 617 |
|
|
// Keep track of last token for control endpoints
|
| 618 |
|
|
void usb_pe_sie::in_token_up(void) {
|
| 619 |
|
|
if (!rst.read())
|
| 620 |
|
|
in_token.write(false);
|
| 621 |
|
|
else if (pid_IN.read())
|
| 622 |
|
|
in_token.write(true);
|
| 623 |
|
|
else if (pid_OUT.read() || pid_SETUP.read())
|
| 624 |
|
|
in_token.write(false);
|
| 625 |
|
|
}
|
| 626 |
|
|
|
| 627 |
|
|
void usb_pe_sie::out_token_up(void) {
|
| 628 |
|
|
if (!rst.read())
|
| 629 |
|
|
out_token.write(false);
|
| 630 |
|
|
else if (pid_OUT.read() || pid_SETUP.read())
|
| 631 |
|
|
out_token.write(true);
|
| 632 |
|
|
else if (pid_IN.read())
|
| 633 |
|
|
out_token.write(false);
|
| 634 |
|
|
}
|
| 635 |
|
|
|
| 636 |
|
|
void usb_pe_sie::setup_token_up(void) {
|
| 637 |
|
|
if (!rst.read())
|
| 638 |
|
|
setup_token.write(false);
|
| 639 |
|
|
else if (pid_SETUP.read())
|
| 640 |
|
|
setup_token.write(true);
|
| 641 |
|
|
else if (pid_OUT.read() || pid_IN.read())
|
| 642 |
|
|
setup_token.write(false);
|
| 643 |
|
|
}
|
| 644 |
|
|
|
| 645 |
|
|
// Indicates if we are performing an IN operation
|
| 646 |
|
|
void usb_pe_sie::in_op_up(void) {
|
| 647 |
|
|
in_op.write(IN_ep.read() || (CTRL_ep.read() && in_token.read()));
|
| 648 |
|
|
}
|
| 649 |
|
|
|
| 650 |
|
|
// Indicates if we are performing an OUT operation
|
| 651 |
|
|
void usb_pe_sie::out_op_up(void) {
|
| 652 |
|
|
out_op.write(OUT_ep.read() || (CTRL_ep.read() && out_token.read()));
|
| 653 |
|
|
}
|
| 654 |
|
|
|
| 655 |
|
|
// Determine if packet is to small or to large
|
| 656 |
|
|
// This is used to NACK and ignore packet for OUT endpoints
|
| 657 |
|
|
|
| 658 |
|
|
// Register File Update Logic
|
| 659 |
|
|
|
| 660 |
|
|
void usb_pe_sie::uc_dpd_set_up(void) {
|
| 661 |
|
|
uc_dpd_set.write(uc_stat_set_d.read());
|
| 662 |
|
|
}
|
| 663 |
|
|
|
| 664 |
|
|
// Abort signal
|
| 665 |
|
|
void usb_pe_sie::abort_up(void) {
|
| 666 |
|
|
abort.write(match.read() && fsel.read() && (state.read() != PE_IDLE));
|
| 667 |
|
|
}
|
| 668 |
|
|
|
| 669 |
|
|
// Time Out Timers
|
| 670 |
|
|
|
| 671 |
|
|
// After sending data in response to an IN token from host, the
|
| 672 |
|
|
// host must reply with an ack. The host has 622nS in Full Speed
|
| 673 |
|
|
// mode and 400nS in High Speed mode to reply.
|
| 674 |
|
|
// "rx_ack_to" indicates when this time has expired and
|
| 675 |
|
|
// rx_ack_to_clr clears the timer
|
| 676 |
|
|
void usb_pe_sie::rx_ack_up1(void) {
|
| 677 |
|
|
rx_ack_to_clr.write(tx_valid.read() || rx_ack_to_clr_d.read());
|
| 678 |
|
|
}
|
| 679 |
|
|
|
| 680 |
|
|
void usb_pe_sie::rx_ack_up2(void) {
|
| 681 |
|
|
if (rx_ack_to_clr.read())
|
| 682 |
|
|
rx_ack_to_cnt.write(0);
|
| 683 |
|
|
else
|
| 684 |
|
|
rx_ack_to_cnt.write(rx_ack_to_cnt.read() + 1);
|
| 685 |
|
|
}
|
| 686 |
|
|
|
| 687 |
|
|
void usb_pe_sie::rx_ack_up3(void) {
|
| 688 |
|
|
rx_ack_to.write(rx_ack_to_cnt.read() == rx_ack_to_val.read());
|
| 689 |
|
|
}
|
| 690 |
|
|
|
| 691 |
|
|
// After sending a OUT token the host must send a data packet.
|
| 692 |
|
|
// The host has 622nS in Full Speed mode and 400nS in High Speed
|
| 693 |
|
|
// mode to send the data packet.
|
| 694 |
|
|
// "tx_data_to" indicates when this time has expired and
|
| 695 |
|
|
// "tx_data_to_clr" clears the timer
|
| 696 |
|
|
void usb_pe_sie::tx_data_up1(void) {
|
| 697 |
|
|
tx_data_to_clr.write(rx_active.read());
|
| 698 |
|
|
}
|
| 699 |
|
|
|
| 700 |
|
|
void usb_pe_sie::tx_data_up2(void) {
|
| 701 |
|
|
if (tx_data_to_clr.read())
|
| 702 |
|
|
tx_data_to_cnt.write(0);
|
| 703 |
|
|
else
|
| 704 |
|
|
tx_data_to_cnt.write(tx_data_to_cnt.read() + 1);
|
| 705 |
|
|
}
|
| 706 |
|
|
|
| 707 |
|
|
void usb_pe_sie::tx_data_up3(void) {
|
| 708 |
|
|
tx_data_to.write(tx_data_to_cnt.read() == tx_data_to_val.read());
|
| 709 |
|
|
}
|
| 710 |
|
|
|
| 711 |
|
|
// Interrupts
|
| 712 |
|
|
void usb_pe_sie::pid_OUT_up(void) {
|
| 713 |
|
|
pid_OUT_r.write(pid_OUT.read());
|
| 714 |
|
|
}
|
| 715 |
|
|
|
| 716 |
|
|
void usb_pe_sie::pid_IN_up(void) {
|
| 717 |
|
|
pid_IN_r.write(pid_IN.read());
|
| 718 |
|
|
}
|
| 719 |
|
|
|
| 720 |
|
|
void usb_pe_sie::pid_PING_up(void) {
|
| 721 |
|
|
pid_PING_r.write(pid_PING.read());
|
| 722 |
|
|
}
|
| 723 |
|
|
|
| 724 |
|
|
void usb_pe_sie::pid_SETUP_up(void) {
|
| 725 |
|
|
pid_SETUP_r.write(pid_SETUP.read());
|
| 726 |
|
|
}
|
| 727 |
|
|
|
| 728 |
|
|
void usb_pe_sie::int_upid_up(void) {
|
| 729 |
|
|
int_upid_set.write(match_r.read() && !pid_SOF.read() &&
|
| 730 |
|
|
((OUT_ep.read() && !(pid_OUT_r.read() || pid_PING_r.read())) ||
|
| 731 |
|
|
(IN_ep.read() && !pid_IN_r.read()) ||
|
| 732 |
|
|
(CTRL_ep.read() && !(pid_IN_r.read() || pid_OUT_r.read() || pid_PING_r.read() || pid_SETUP_r.read()))));
|
| 733 |
|
|
}
|
| 734 |
|
|
|
| 735 |
|
|
void usb_pe_sie::int_to_up(void) {
|
| 736 |
|
|
int_to_set.write(((state.read() == PE_IN2) && rx_ack_to.read()) ||
|
| 737 |
|
|
((state.read() == PE_OUT) && tx_data_to.read()));
|
| 738 |
|
|
}
|
| 739 |
|
|
|
| 740 |
|
|
void usb_pe_sie::int_crc16_up(void) {
|
| 741 |
|
|
int_crc16_set.write(rx_data_done.read() && crc16_err.read());
|
| 742 |
|
|
}
|
| 743 |
|
|
|
| 744 |
|
|
void usb_pe_sie::int_seqerr_up(void) {
|
| 745 |
|
|
int_seqerr_set.write(int_seqerr_set_d.read());
|
| 746 |
|
|
}
|
| 747 |
|
|
|
| 748 |
|
|
void usb_pe_sie::send_stall_up(void) {
|
| 749 |
|
|
if (!rst.read())
|
| 750 |
|
|
send_stall_r.write(false);
|
| 751 |
|
|
else if (send_stall.read())
|
| 752 |
|
|
send_stall_r.write(true);
|
| 753 |
|
|
else if (send_token.read())
|
| 754 |
|
|
send_stall_r.write(false);
|
| 755 |
|
|
}
|
| 756 |
|
|
|
| 757 |
|
|
void usb_pe_sie::state_up(void) {
|
| 758 |
|
|
if (!rst.read())
|
| 759 |
|
|
state.write(PE_IDLE);
|
| 760 |
|
|
else if (match.read())
|
| 761 |
|
|
state.write(PE_IDLE);
|
| 762 |
|
|
else
|
| 763 |
|
|
state.write(next_state.read());
|
| 764 |
|
|
}
|
| 765 |
|
|
|
| 766 |
|
|
void usb_pe_sie::pe_statemachine(void) {
|
| 767 |
|
|
next_state.write(state.read());
|
| 768 |
|
|
token_pid_sel_d.write(PE_ACK);
|
| 769 |
|
|
send_token_d.write(false);
|
| 770 |
|
|
rx_dma_en.write(false);
|
| 771 |
|
|
tx_dma_en.write(false);
|
| 772 |
|
|
uc_stat_set_d.write(false);
|
| 773 |
|
|
rx_ack_to_clr_d.write(true);
|
| 774 |
|
|
int_seqerr_set_d.write(false);
|
| 775 |
|
|
|
| 776 |
|
|
switch (state.read()) {// synopsys full_case parallel_case
|
| 777 |
|
|
case PE_IDLE:
|
| 778 |
|
|
|
| 779 |
|
|
///////////////////////////////////////////////////////////////////////
|
| 780 |
|
|
//
|
| 781 |
|
|
// DEBUG INFORMATIONS
|
| 782 |
|
|
//
|
| 783 |
|
|
///////////////////////////////////////////////////////////////////////
|
| 784 |
|
|
|
| 785 |
|
|
#ifdef USBF_VERBOSE_DEBUG
|
| 786 |
|
|
cout << "SIE -> PE: Entered state IDLE (" << sc_simulation_time() << ")" << endl;
|
| 787 |
|
|
#endif
|
| 788 |
|
|
|
| 789 |
|
|
///////////////////////////////////////////////////////////////////////
|
| 790 |
|
|
|
| 791 |
|
|
if (match_r.read() && !pid_SOF.read()) {
|
| 792 |
|
|
if (send_stall.read()) { // Halt Forced send STALL
|
| 793 |
|
|
token_pid_sel_d.write(PE_STALL);
|
| 794 |
|
|
send_token_d.write(true);
|
| 795 |
|
|
next_state.write(PE_TOKEN);
|
| 796 |
|
|
} else if (IN_ep.read() || (CTRL_ep.read() && pid_IN.read())) {
|
| 797 |
|
|
if (txfr_int.read() && ep_empty.read()) {
|
| 798 |
|
|
token_pid_sel_d.write(PE_NACK);
|
| 799 |
|
|
send_token_d.write(true);
|
| 800 |
|
|
next_state.write(PE_TOKEN);
|
| 801 |
|
|
} else {
|
| 802 |
|
|
tx_dma_en.write(true);
|
| 803 |
|
|
next_state.write(PE_IN);
|
| 804 |
|
|
}
|
| 805 |
|
|
} else if (OUT_ep.read() || (CTRL_ep.read() && (pid_OUT.read() || pid_SETUP.read()))) {
|
| 806 |
|
|
rx_dma_en.write(true);
|
| 807 |
|
|
next_state.write(PE_OUT);
|
| 808 |
|
|
}
|
| 809 |
|
|
}
|
| 810 |
|
|
break;
|
| 811 |
|
|
|
| 812 |
|
|
case PE_TOKEN:
|
| 813 |
|
|
|
| 814 |
|
|
///////////////////////////////////////////////////////////////////////
|
| 815 |
|
|
//
|
| 816 |
|
|
// DEBUG INFORMATIONS
|
| 817 |
|
|
//
|
| 818 |
|
|
///////////////////////////////////////////////////////////////////////
|
| 819 |
|
|
|
| 820 |
|
|
#ifdef USBF_VERBOSE_DEBUG
|
| 821 |
|
|
cout << "SIE -> PE: Entered state TOKEN (" << sc_simulation_time() << ")" << endl;
|
| 822 |
|
|
#endif
|
| 823 |
|
|
|
| 824 |
|
|
///////////////////////////////////////////////////////////////////////
|
| 825 |
|
|
|
| 826 |
|
|
next_state.write(PE_IDLE);
|
| 827 |
|
|
break;
|
| 828 |
|
|
|
| 829 |
|
|
case PE_IN:
|
| 830 |
|
|
|
| 831 |
|
|
///////////////////////////////////////////////////////////////////////
|
| 832 |
|
|
//
|
| 833 |
|
|
// DEBUG INFORMATIONS
|
| 834 |
|
|
//
|
| 835 |
|
|
///////////////////////////////////////////////////////////////////////
|
| 836 |
|
|
|
| 837 |
|
|
#ifdef USBF_VERBOSE_DEBUG
|
| 838 |
|
|
cout << "SIE -> PE: Entered state IN (" << sc_simulation_time() << ")" << endl;
|
| 839 |
|
|
#endif
|
| 840 |
|
|
|
| 841 |
|
|
///////////////////////////////////////////////////////////////////////
|
| 842 |
|
|
|
| 843 |
|
|
rx_ack_to_clr_d.write(false);
|
| 844 |
|
|
if (idma_done.read())
|
| 845 |
|
|
if (txfr_iso.read())
|
| 846 |
|
|
next_state.write(PE_UPDATE);
|
| 847 |
|
|
else
|
| 848 |
|
|
next_state.write(PE_IN2);
|
| 849 |
|
|
break;
|
| 850 |
|
|
|
| 851 |
|
|
case PE_IN2:
|
| 852 |
|
|
|
| 853 |
|
|
///////////////////////////////////////////////////////////////////////
|
| 854 |
|
|
//
|
| 855 |
|
|
// DEBUG INFORMATIONS
|
| 856 |
|
|
//
|
| 857 |
|
|
///////////////////////////////////////////////////////////////////////
|
| 858 |
|
|
|
| 859 |
|
|
#ifdef USBF_VERBOSE_DEBUG
|
| 860 |
|
|
cout << "SIE -> PE: Entered state IN2 (" << sc_simulation_time() << ")" << endl;
|
| 861 |
|
|
#endif
|
| 862 |
|
|
|
| 863 |
|
|
///////////////////////////////////////////////////////////////////////
|
| 864 |
|
|
|
| 865 |
|
|
rx_ack_to_clr_d.write(false);
|
| 866 |
|
|
// Wait for ACK from host or time out
|
| 867 |
|
|
if (rx_ack_to.read())
|
| 868 |
|
|
next_state.write(PE_IDLE);
|
| 869 |
|
|
else if (token_valid.read() && pid_ACK.read())
|
| 870 |
|
|
next_state.write(PE_UPDATE);
|
| 871 |
|
|
break;
|
| 872 |
|
|
|
| 873 |
|
|
case PE_OUT:
|
| 874 |
|
|
|
| 875 |
|
|
///////////////////////////////////////////////////////////////////////
|
| 876 |
|
|
//
|
| 877 |
|
|
// DEBUG INFORMATIONS
|
| 878 |
|
|
//
|
| 879 |
|
|
///////////////////////////////////////////////////////////////////////
|
| 880 |
|
|
|
| 881 |
|
|
#ifdef USBF_VERBOSE_DEBUG
|
| 882 |
|
|
cout << "SIE -> PE: Entered state OUT (" << sc_simulation_time() << ")" << endl;
|
| 883 |
|
|
#endif
|
| 884 |
|
|
|
| 885 |
|
|
///////////////////////////////////////////////////////////////////////
|
| 886 |
|
|
|
| 887 |
|
|
if (tx_data_to.read() || crc16_err.read() || abort.read())
|
| 888 |
|
|
next_state.write(PE_IDLE);
|
| 889 |
|
|
else if (rx_data_done.read()) { // Send ACK
|
| 890 |
|
|
if (txfr_iso.read()) {
|
| 891 |
|
|
if (pid_seq_err.read())
|
| 892 |
|
|
int_seqerr_set_d.write(true);
|
| 893 |
|
|
next_state.write(PE_UPDATEW);
|
| 894 |
|
|
} else {
|
| 895 |
|
|
next_state.write(PE_OUT2A);
|
| 896 |
|
|
}
|
| 897 |
|
|
}
|
| 898 |
|
|
break;
|
| 899 |
|
|
|
| 900 |
|
|
case PE_OUT2B: // This is a delay state to NACK to small or
|
| 901 |
|
|
// to large packets. This state could be skipped
|
| 902 |
|
|
|
| 903 |
|
|
///////////////////////////////////////////////////////////////////////
|
| 904 |
|
|
//
|
| 905 |
|
|
// DEBUG INFORMATIONS
|
| 906 |
|
|
//
|
| 907 |
|
|
///////////////////////////////////////////////////////////////////////
|
| 908 |
|
|
|
| 909 |
|
|
#ifdef USBF_VERBOSE_DEBUG
|
| 910 |
|
|
cout << "SIE -> PE: Entered state OUT2B (" << sc_simulation_time() << ")" << endl;
|
| 911 |
|
|
#endif
|
| 912 |
|
|
|
| 913 |
|
|
///////////////////////////////////////////////////////////////////////
|
| 914 |
|
|
|
| 915 |
|
|
if (abort.read())
|
| 916 |
|
|
next_state.write(PE_IDLE);
|
| 917 |
|
|
else
|
| 918 |
|
|
next_state.write(PE_OUT2B);
|
| 919 |
|
|
break;
|
| 920 |
|
|
|
| 921 |
|
|
case PE_OUT2A: // Send ACK/NACK/NYET
|
| 922 |
|
|
|
| 923 |
|
|
///////////////////////////////////////////////////////////////////////
|
| 924 |
|
|
//
|
| 925 |
|
|
// DEBUG INFORMATIONS
|
| 926 |
|
|
//
|
| 927 |
|
|
///////////////////////////////////////////////////////////////////////
|
| 928 |
|
|
|
| 929 |
|
|
#ifdef USBF_VERBOSE_DEBUG
|
| 930 |
|
|
cout << "SIE -> PE: Entered state OUT2A (" << sc_simulation_time() << ")" << endl;
|
| 931 |
|
|
#endif
|
| 932 |
|
|
|
| 933 |
|
|
///////////////////////////////////////////////////////////////////////
|
| 934 |
|
|
|
| 935 |
|
|
if (abort.read())
|
| 936 |
|
|
next_state.write(PE_IDLE);
|
| 937 |
|
|
else if (send_stall_r.read()) {
|
| 938 |
|
|
token_pid_sel_d.write(PE_STALL);
|
| 939 |
|
|
send_token_d.write(true);
|
| 940 |
|
|
next_state.write(PE_IDLE);
|
| 941 |
|
|
} else if (ep_full.read()) {
|
| 942 |
|
|
token_pid_sel_d.write(PE_NACK);
|
| 943 |
|
|
send_token_d.write(true);
|
| 944 |
|
|
next_state.write(PE_IDLE);
|
| 945 |
|
|
} else {
|
| 946 |
|
|
token_pid_sel_d.write(PE_ACK);
|
| 947 |
|
|
send_token_d.write(true);
|
| 948 |
|
|
if (pid_seq_err.read())
|
| 949 |
|
|
next_state.write(PE_IDLE);
|
| 950 |
|
|
else
|
| 951 |
|
|
next_state.write(PE_UPDATE);
|
| 952 |
|
|
}
|
| 953 |
|
|
break;
|
| 954 |
|
|
|
| 955 |
|
|
case PE_UPDATEW:
|
| 956 |
|
|
|
| 957 |
|
|
///////////////////////////////////////////////////////////////////////
|
| 958 |
|
|
//
|
| 959 |
|
|
// DEBUG INFORMATIONS
|
| 960 |
|
|
//
|
| 961 |
|
|
///////////////////////////////////////////////////////////////////////
|
| 962 |
|
|
|
| 963 |
|
|
#ifdef USBF_VERBOSE_DEBUG
|
| 964 |
|
|
cout << "SIE -> PE: Entered state UPDATEW (" << sc_simulation_time() << ")" << endl;
|
| 965 |
|
|
#endif
|
| 966 |
|
|
|
| 967 |
|
|
///////////////////////////////////////////////////////////////////////
|
| 968 |
|
|
|
| 969 |
|
|
next_state.write(PE_UPDATE);
|
| 970 |
|
|
break;
|
| 971 |
|
|
|
| 972 |
|
|
case PE_UPDATE:
|
| 973 |
|
|
|
| 974 |
|
|
///////////////////////////////////////////////////////////////////////
|
| 975 |
|
|
//
|
| 976 |
|
|
// DEBUG INFORMATIONS
|
| 977 |
|
|
//
|
| 978 |
|
|
///////////////////////////////////////////////////////////////////////
|
| 979 |
|
|
|
| 980 |
|
|
#ifdef USBF_VERBOSE_DEBUG
|
| 981 |
|
|
cout << "SIE -> PE: Entered state UPDATE (" << sc_simulation_time() << ")" << endl;
|
| 982 |
|
|
#endif
|
| 983 |
|
|
|
| 984 |
|
|
///////////////////////////////////////////////////////////////////////
|
| 985 |
|
|
|
| 986 |
|
|
uc_stat_set_d.write(true);
|
| 987 |
|
|
next_state.write(PE_IDLE);
|
| 988 |
|
|
break;
|
| 989 |
|
|
}
|
| 990 |
|
|
}
|
| 991 |
|
|
|
