[8] | 1 | /* -*- c++ -*- |
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| 2 | * SOCLIB_LGPL_HEADER_BEGIN |
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| 3 | * |
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| 4 | * This file is part of SoCLib, GNU LGPLv2.1. |
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| 5 | * |
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| 6 | * SoCLib is free software; you can redistribute it and/or modify it |
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| 7 | * under the terms of the GNU Lesser General Public License as published |
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| 8 | * by the Free Software Foundation; version 2.1 of the License. |
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| 9 | * |
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| 10 | * SoCLib is distributed in the hope that it will be useful, but |
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| 11 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 13 | * Lesser General Public License for more details. |
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| 14 | * |
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| 15 | * You should have received a copy of the GNU Lesser General Public |
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| 16 | * License along with SoCLib; if not, write to the Free Software |
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| 17 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
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| 18 | * 02110-1301 USA |
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| 19 | * |
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| 20 | * SOCLIB_LGPL_HEADER_END |
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| 21 | * |
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| 22 | * Author : Abdelmalek SI MERABET |
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| 23 | * Date : March 2010 |
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| 24 | * |
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| 25 | * Copyright: UPMC - LIP6 |
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| 26 | */ |
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| 27 | #include "vci_initiator.h" |
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| 28 | #include "generic_fifo.h" |
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| 29 | #include "mapping_table.h" |
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| 30 | #include "ring_signals_2.h" |
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| 31 | |
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[16] | 32 | //#define T_DEBUG |
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| 33 | //#define TR_DEBUG |
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[8] | 34 | //#define T_DEBUG_FSM |
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| 35 | |
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| 36 | namespace soclib { namespace caba { |
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| 37 | #ifdef T_DEBUG_FSM |
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| 38 | namespace { |
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| 39 | const char *vci_cmd_fsm_state_str_t[] = { |
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| 40 | "CMD_FIRST_HEADER", |
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| 41 | "CMD_SECOND_HEADER", |
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| 42 | "WDATA", |
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| 43 | }; |
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| 44 | const char *vci_rsp_fsm_state_str_t[] = { |
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| 45 | "RSP_HEADER", |
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| 46 | "RSP_DATA", |
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| 47 | }; |
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| 48 | const char *ring_rsp_fsm_state_str_t[] = { |
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| 49 | "RSP_IDLE", |
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| 50 | "DEFAULT", |
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| 51 | "KEEP", |
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| 52 | }; |
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| 53 | const char *ring_cmd_fsm_state_str_t[] = { |
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| 54 | "CMD_IDLE", |
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| 55 | "BROADCAST_0", |
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| 56 | "BROADCAST_1", |
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| 57 | "LOCAL", |
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| 58 | "RING", |
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| 59 | }; |
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| 60 | } |
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| 61 | #endif |
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| 62 | |
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| 63 | template<typename vci_param, int ring_cmd_data_size, int ring_rsp_data_size> |
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| 64 | class VciRingTarget |
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| 65 | { |
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| 66 | |
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| 67 | typedef typename vci_param::fast_addr_t vci_addr_t; |
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| 68 | typedef RingSignals2 ring_signal_t; |
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| 69 | typedef soclib::caba::VciInitiator<vci_param> vci_initiator_t; |
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| 70 | |
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| 71 | private: |
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| 72 | enum vci_cmd_fsm_state_e { |
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| 73 | CMD_FIRST_HEADER, // first flit for a ring cmd packet (read or write) |
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| 74 | CMD_SECOND_HEADER, // second flit for a ring cmd packet |
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| 75 | WDATA, // data flit for a ring cmd write packet |
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| 76 | }; |
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| 77 | |
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| 78 | enum vci_rsp_fsm_state_e { |
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| 79 | RSP_HEADER, // first flit for a ring rsp packet (read or write) |
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| 80 | DATA, // next flit for a ring rsp packet |
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| 81 | }; |
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| 82 | |
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| 83 | enum ring_cmd_fsm_state_e { |
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| 84 | CMD_IDLE, // waiting for first flit of a command packet |
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| 85 | BROADCAST_0, |
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| 86 | BROADCAST_1, |
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| 87 | LOCAL, // next flit of a local cmd packet |
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| 88 | RING, // next flit of a ring cmd packet |
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| 89 | }; |
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| 90 | |
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| 91 | // cmd token allocation fsm |
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| 92 | enum ring_rsp_fsm_state_e { |
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| 93 | RSP_IDLE, |
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| 94 | DEFAULT, |
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| 95 | KEEP, |
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| 96 | }; |
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| 97 | |
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| 98 | // structural parameters |
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| 99 | bool m_alloc_target; |
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| 100 | int m_tgtid; |
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| 101 | std::string m_name; |
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| 102 | |
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| 103 | // internal registers |
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| 104 | sc_signal<int> r_ring_cmd_fsm; // ring command packet FSM |
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| 105 | sc_signal<int> r_ring_rsp_fsm; // ring response packet FSM |
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| 106 | sc_signal<int> r_vci_cmd_fsm; // vci command packet FSM |
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| 107 | sc_signal<int> r_vci_rsp_fsm; // vci response packet FSM |
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| 108 | |
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| 109 | sc_signal<sc_uint<vci_param::S> > r_srcid; |
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| 110 | sc_signal<sc_uint<2> > r_cmd; |
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| 111 | sc_signal<sc_uint<vci_param::T> > r_trdid; |
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| 112 | sc_signal<sc_uint<vci_param::P> > r_pktid; |
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| 113 | sc_signal<sc_uint<vci_param::K> > r_plen; |
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| 114 | sc_signal<sc_uint<1> > r_contig; |
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| 115 | sc_signal<sc_uint<1> > r_const; |
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| 116 | sc_signal<sc_uint<vci_param::N> > r_addr; |
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| 117 | |
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| 118 | // internal fifos |
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| 119 | GenericFifo<uint64_t > m_cmd_fifo; // fifo for the local command paquet |
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| 120 | GenericFifo<uint64_t > m_rsp_fifo; // fifo for the local response paquet |
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| 121 | |
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| 122 | // routing table |
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| 123 | soclib::common::AddressDecodingTable<vci_addr_t, int> m_rt; |
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| 124 | // locality table |
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| 125 | soclib::common::AddressDecodingTable<vci_addr_t, bool> m_lt; |
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| 126 | |
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| 127 | bool trace(int sc_time_stamp) |
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| 128 | { |
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| 129 | int time_stamp=0; |
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| 130 | char *ctime_stamp= getenv("FROM_CYCLE"); |
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| 131 | |
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| 132 | if (ctime_stamp) time_stamp=atoi(ctime_stamp); |
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| 133 | |
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| 134 | return sc_time_stamp >= time_stamp; |
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| 135 | |
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| 136 | } |
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| 137 | |
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| 138 | public : |
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| 139 | |
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| 140 | VciRingTarget( |
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| 141 | const char *name, |
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| 142 | bool alloc_target, |
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| 143 | const int &wrapper_fifo_depth, |
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| 144 | const soclib::common::MappingTable &mt, |
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| 145 | const soclib::common::IntTab &ringid, |
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| 146 | const int &tgtid) |
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| 147 | : m_name(name), |
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| 148 | m_alloc_target(alloc_target), |
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| 149 | m_cmd_fifo("m_cmd_fifo", wrapper_fifo_depth), |
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| 150 | m_rsp_fifo("m_rsp_fifo", wrapper_fifo_depth), |
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| 151 | m_rt(mt.getRoutingTable<typename vci_param::fast_addr_t>(ringid)), |
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| 152 | m_lt(mt.getLocalityTable<typename vci_param::fast_addr_t>(ringid)), |
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| 153 | m_tgtid(tgtid), |
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| 154 | r_ring_cmd_fsm("r_ring_cmd_fsm"), |
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| 155 | r_ring_rsp_fsm("r_ring_rsp_fsm"), |
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| 156 | r_vci_cmd_fsm("r_vci_cmd_fsm"), |
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| 157 | r_vci_rsp_fsm("r_vci_rsp_fsm"), |
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| 158 | r_srcid("r_srcid"), |
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| 159 | r_cmd("r_cmd"), |
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| 160 | r_trdid("r_trdid"), |
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| 161 | r_pktid("r_pktid"), |
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| 162 | r_plen("r_plen"), |
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| 163 | r_contig("r_contig"), |
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| 164 | r_const("r_const"), |
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| 165 | r_addr("r_addr") |
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| 166 | |
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| 167 | {} // end constructor |
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| 168 | |
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| 169 | void reset() |
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| 170 | { |
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| 171 | if(m_alloc_target) |
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| 172 | r_ring_rsp_fsm = DEFAULT; |
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| 173 | else |
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| 174 | r_ring_rsp_fsm = RSP_IDLE; |
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| 175 | |
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| 176 | r_vci_cmd_fsm = CMD_FIRST_HEADER; |
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| 177 | r_vci_rsp_fsm = RSP_HEADER; |
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| 178 | r_ring_cmd_fsm = CMD_IDLE; |
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| 179 | m_cmd_fifo.init(); |
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| 180 | m_rsp_fifo.init(); |
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| 181 | } |
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| 182 | void transition(const vci_initiator_t &p_vci, const ring_signal_t p_ring_in) |
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| 183 | { |
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| 184 | |
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| 185 | bool cmd_fifo_get = false; |
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| 186 | bool cmd_fifo_put = false; |
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| 187 | uint64_t cmd_fifo_data = 0; |
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| 188 | |
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| 189 | bool rsp_fifo_get = false; |
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| 190 | bool rsp_fifo_put = false; |
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| 191 | uint64_t rsp_fifo_data = 0; |
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| 192 | |
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| 193 | #ifdef T_DEBUG_FSM |
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[16] | 194 | if( trace(sc_time_stamp())) |
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| 195 | std::cout << sc_time_stamp() << " - " << m_name |
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| 196 | << " - vci cmd = " << vci_cmd_fsm_state_str_t[r_vci_cmd_fsm] |
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| 197 | << " - vci rsp = " << vci_rsp_fsm_state_str_t[r_vci_rsp_fsm] |
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| 198 | << " - ring cmd = " << ring_cmd_fsm_state_str_t[r_ring_cmd_fsm] |
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| 199 | << " - ring rsp = " << ring_rsp_fsm_state_str_t[r_ring_rsp_fsm] |
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| 200 | << std::endl; |
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[8] | 201 | #endif |
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| 202 | |
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| 203 | //////////// VCI CMD FSM ///////////////////////// |
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| 204 | switch ( r_vci_cmd_fsm ) |
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| 205 | { |
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| 206 | |
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| 207 | case CMD_FIRST_HEADER: |
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| 208 | if (m_cmd_fifo.rok() == true) |
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| 209 | { |
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| 210 | #ifdef T_DEBUG |
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| 211 | if( trace(sc_time_stamp())) |
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| 212 | std::cout << sc_time_stamp() << " -- " << m_name |
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| 213 | << " -- r_vci_cmd_fsm -- CMD_FIRST_HEADER " |
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| 214 | << " -- fifo_rok : " << m_cmd_fifo.rok() |
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| 215 | << " -- fifo_data : " << std::hex << m_cmd_fifo.read() |
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| 216 | << std::endl; |
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| 217 | #endif |
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| 218 | |
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| 219 | cmd_fifo_get = true; |
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| 220 | |
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| 221 | if (m_cmd_fifo.read() & 0x1 == 0x1) // broadcast |
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| 222 | { |
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| 223 | r_addr = (sc_uint<vci_param::N>) 0x3; |
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[16] | 224 | r_srcid = (sc_uint<vci_param::S>) (m_cmd_fifo.read() >> 20); |
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[8] | 225 | r_cmd = (sc_uint<2>) 0x2; |
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| 226 | r_contig = (sc_uint<1>) 0x1; |
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| 227 | r_const = (sc_uint<1>) 0x0; |
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| 228 | r_plen = (sc_uint<vci_param::K>) 0x04; |
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| 229 | r_pktid = (sc_uint<vci_param::P>) 0x0; |
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[16] | 230 | r_trdid = (sc_uint<vci_param::T>) ((m_cmd_fifo.read() >> 16) & 0xF); |
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[8] | 231 | |
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| 232 | r_vci_cmd_fsm = WDATA; |
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| 233 | } |
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| 234 | else |
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| 235 | { |
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| 236 | r_addr = (sc_uint<vci_param::N>) (m_cmd_fifo.read() << 1); |
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| 237 | r_vci_cmd_fsm = CMD_SECOND_HEADER; |
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| 238 | } |
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| 239 | |
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| 240 | |
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| 241 | } // end if rok |
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| 242 | break; |
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| 243 | |
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| 244 | case CMD_SECOND_HEADER: |
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| 245 | if ( m_cmd_fifo.rok() ) |
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| 246 | { |
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| 247 | |
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| 248 | #ifdef T_DEBUG |
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| 249 | if( trace(sc_time_stamp())) |
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| 250 | std::cout << sc_time_stamp() << " -- " << m_name |
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| 251 | << " -- r_vci_cmd_fsm -- CMD_SECOND_HEADER " |
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| 252 | << " -- r_addr : " << std::hex << r_addr |
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| 253 | << " -- fifo_rok : " << m_cmd_fifo.rok() |
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| 254 | << " -- fifo_data : " << m_cmd_fifo.read() |
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| 255 | << " -- vci cmdack : " << p_vci.cmdack.read() |
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| 256 | << std::endl; |
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| 257 | #endif |
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| 258 | if(((int) (m_cmd_fifo.read() >> (ring_cmd_data_size - 1) ) & 0x1) == 1) // read command |
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| 259 | { |
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| 260 | |
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| 261 | if (p_vci.cmdack.read()) |
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| 262 | { |
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| 263 | |
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| 264 | cmd_fifo_get = true; |
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| 265 | r_vci_cmd_fsm = CMD_FIRST_HEADER; |
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| 266 | } |
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| 267 | } |
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| 268 | else // write command |
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| 269 | { |
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[16] | 270 | |
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[8] | 271 | cmd_fifo_get = true; |
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| 272 | r_srcid = (sc_uint<vci_param::S>) (m_cmd_fifo.read() >> 20) ; |
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| 273 | r_cmd = (sc_uint<2>) ((m_cmd_fifo.read() >> 18) & 0x3); |
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| 274 | r_contig = (sc_uint<1>) ((m_cmd_fifo.read() >> 17) & 0x1); |
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| 275 | r_const = (sc_uint<1>) ((m_cmd_fifo.read() >> 16) & 0x1); |
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| 276 | r_plen = (sc_uint<vci_param::K>) ((m_cmd_fifo.read() >> 8) & 0xFF); |
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| 277 | r_pktid = (sc_uint<vci_param::P>) ((m_cmd_fifo.read() >> 4) & 0xF); |
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| 278 | r_trdid = (sc_uint<vci_param::T>) (m_cmd_fifo.read() & 0xF); |
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| 279 | r_vci_cmd_fsm = WDATA; |
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| 280 | } |
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| 281 | } |
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| 282 | break; |
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| 283 | |
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| 284 | case WDATA: |
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| 285 | #ifdef T_DEBUG |
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| 286 | if( trace(sc_time_stamp())) |
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| 287 | std::cout << sc_time_stamp() << " -- " << m_name |
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| 288 | << " -- r_vci_cmd_fsm -- WDATA " |
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| 289 | << " -- vci_cmdack : " << p_vci.cmdack.read() |
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| 290 | << " -- fifo_rok : " << m_cmd_fifo.rok() |
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| 291 | << " -- fifo_data : " << std::hex << m_cmd_fifo.read() |
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| 292 | << " -- r_plen : " << r_plen.read() |
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| 293 | << std::endl; |
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| 294 | #endif |
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| 295 | if ( p_vci.cmdack.read() && m_cmd_fifo.rok() ) |
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| 296 | { |
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| 297 | |
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| 298 | cmd_fifo_get = true; |
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| 299 | sc_uint<1> contig = r_contig; |
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| 300 | if(contig == 0x1) |
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| 301 | r_addr = r_addr.read() + vci_param::B ; |
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| 302 | if(( (m_cmd_fifo.read() >> (ring_cmd_data_size - 1) ) & 0x1) == 1) |
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| 303 | r_vci_cmd_fsm = CMD_FIRST_HEADER; |
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| 304 | else |
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| 305 | r_vci_cmd_fsm = WDATA; |
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| 306 | } // end if cmdack |
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| 307 | break; |
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| 308 | |
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| 309 | } // end switch r_vci_cmd_fsm |
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| 310 | |
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| 311 | /////////// VCI RSP FSM ///////////////////////// |
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| 312 | switch ( r_vci_rsp_fsm ) |
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| 313 | { |
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| 314 | case RSP_HEADER: |
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| 315 | #ifdef T_DEBUG |
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| 316 | if( trace(sc_time_stamp())) |
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| 317 | std::cout << sc_time_stamp() << " -- " << m_name |
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| 318 | << " -- r_vci_rsp_fsm -- RSP_HEADER " |
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| 319 | << " -- fifo_rsp_wok : " << m_rsp_fifo.wok() |
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| 320 | << " -- vci_rspval : " << p_vci.rspval.read() |
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| 321 | << " -- rsrcid : " << std::hex << p_vci.rsrcid.read() |
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| 322 | << " -- rerror : " << p_vci.rerror.read() |
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| 323 | << std::endl; |
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| 324 | #endif |
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[16] | 325 | if((p_vci.rspval.read() == true) && (m_rsp_fifo.wok())) |
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| 326 | { |
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| 327 | |
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[8] | 328 | rsp_fifo_data = (((uint64_t) p_vci.rsrcid.read() & 0x3FFF) << 12) | |
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| 329 | (((uint64_t) p_vci.rerror.read() & 0x1) << 8) | |
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| 330 | (((uint64_t) p_vci.rpktid.read() & 0xF) << 4) | |
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| 331 | ((uint64_t) p_vci.rtrdid.read() & 0xF); |
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| 332 | rsp_fifo_put = true; |
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| 333 | r_vci_rsp_fsm = DATA; |
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| 334 | } |
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| 335 | break; |
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| 336 | |
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| 337 | case DATA: |
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[16] | 338 | #ifdef T_DEBUG |
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[8] | 339 | if( trace(sc_time_stamp())) |
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| 340 | std::cout << sc_time_stamp() << " -- " << m_name |
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| 341 | << " -- r_vci_rsp_fsm -- RSP_DATA " |
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| 342 | << " -- fifo_rsp_wok : " << m_rsp_fifo.wok() |
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| 343 | << " -- vci_rspval : " << p_vci.rspval.read() |
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| 344 | << " -- rdata : " << std::hex << p_vci.rdata.read() |
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| 345 | << " -- reop : " << p_vci.reop.read() |
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| 346 | << std::endl; |
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[16] | 347 | #endif |
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| 348 | if((p_vci.rspval.read() == true) && (m_rsp_fifo.wok())) |
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| 349 | { |
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[8] | 350 | |
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[16] | 351 | |
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[8] | 352 | rsp_fifo_put = true; |
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| 353 | rsp_fifo_data = (uint64_t) p_vci.rdata.read(); |
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| 354 | |
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| 355 | if (p_vci.reop.read()) |
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| 356 | { |
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| 357 | rsp_fifo_data = rsp_fifo_data | (((uint64_t) 0x1) << (ring_rsp_data_size-1)) ; |
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| 358 | r_vci_rsp_fsm = RSP_HEADER; |
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| 359 | } |
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| 360 | } |
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| 361 | break; |
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| 362 | |
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| 363 | } // end switch r_vci_rsp_fsm |
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| 364 | |
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| 365 | //////////// RING RSP FSM (distributed) ///////////////////////// |
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| 366 | |
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| 367 | switch( r_ring_rsp_fsm ) |
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| 368 | { |
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| 369 | case RSP_IDLE: |
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| 370 | #ifdef TR_DEBUG |
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| 371 | if( trace(sc_time_stamp())) |
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| 372 | std::cout << sc_time_stamp() << " -- " << m_name << " -- ring_rsp_fsm : RSP_IDLE" |
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| 373 | << " -- fifo rok : " << m_rsp_fifo.rok() |
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| 374 | << " -- in rok : " << p_ring_in.rsp_w |
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| 375 | << " -- in wok : " << p_ring_in.rsp_r |
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| 376 | << " -- in rsp grant : " << p_ring_in.rsp_grant |
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| 377 | << " -- in rsp data : " << p_ring_in.rsp_data |
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| 378 | << std::endl; |
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| 379 | #endif |
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| 380 | if ( p_ring_in.rsp_grant && m_rsp_fifo.rok() ) |
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| 381 | |
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| 382 | r_ring_rsp_fsm = KEEP; |
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| 383 | |
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| 384 | break; |
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| 385 | |
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| 386 | case DEFAULT: |
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| 387 | |
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| 388 | if ( m_rsp_fifo.rok()) |
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| 389 | { |
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| 390 | #ifdef TR_DEBUG |
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| 391 | if( trace(sc_time_stamp())) |
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| 392 | std::cout << sc_time_stamp() << " -- " << m_name << " -- ring_rsp_fsm : DEFAULT " |
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| 393 | << " -- fifo data : " << std::hex << m_rsp_fifo.read() |
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| 394 | << std::endl; |
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| 395 | #endif |
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| 396 | rsp_fifo_get = p_ring_in.rsp_r; //true; |
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| 397 | r_ring_rsp_fsm = KEEP; |
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| 398 | } |
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| 399 | else if ( !p_ring_in.rsp_grant ) |
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| 400 | r_ring_rsp_fsm = RSP_IDLE; |
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| 401 | break; |
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| 402 | |
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| 403 | case KEEP: |
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| 404 | |
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| 405 | if(m_rsp_fifo.rok() && p_ring_in.rsp_r) |
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| 406 | { |
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| 407 | #ifdef TR_DEBUG |
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| 408 | if( trace(sc_time_stamp())) |
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| 409 | std::cout << sc_time_stamp() << " -- " << m_name << " -- ring_rsp_fsm : KEEP " |
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| 410 | << " -- fifo rok : " << m_rsp_fifo.rok() |
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| 411 | << " -- in wok : " << p_ring_in.rsp_r |
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| 412 | << " -- fifo data : " << std::hex << m_rsp_fifo.read() |
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| 413 | << std::endl; |
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| 414 | #endif |
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| 415 | rsp_fifo_get = true; |
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| 416 | if ((int) ((m_rsp_fifo.read() >> 32 ) & 0x1) == 1) |
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| 417 | { |
---|
| 418 | if ( p_ring_in.rsp_grant ) |
---|
| 419 | r_ring_rsp_fsm = DEFAULT; |
---|
| 420 | else |
---|
| 421 | r_ring_rsp_fsm = RSP_IDLE; |
---|
| 422 | } |
---|
| 423 | } |
---|
| 424 | break; |
---|
| 425 | |
---|
| 426 | } // end switch ring cmd fsm |
---|
| 427 | |
---|
| 428 | /////////// RING CMD FSM //////////////////////// |
---|
| 429 | switch( r_ring_cmd_fsm ) |
---|
| 430 | { |
---|
| 431 | |
---|
| 432 | case CMD_IDLE: |
---|
| 433 | { // for variable scope |
---|
| 434 | |
---|
| 435 | vci_addr_t rtgtid = (vci_addr_t) ((p_ring_in.cmd_data >> 1) << 2); |
---|
| 436 | bool islocal = m_lt[rtgtid] && (m_rt[rtgtid] == (vci_addr_t) m_tgtid); |
---|
| 437 | bool brdcst = (p_ring_in.cmd_data & 0x1) == 0X1 ; |
---|
| 438 | bool eop = ( (int) ((p_ring_in.cmd_data >> (ring_cmd_data_size - 1) ) & 0x1) == 1); |
---|
| 439 | |
---|
| 440 | #ifdef TR_DEBUG |
---|
| 441 | if( trace(sc_time_stamp())) |
---|
| 442 | std::cout << sc_time_stamp() << " -- " << m_name |
---|
| 443 | << " - ring_cmd_fsm -- CMD_IDLE " |
---|
| 444 | << " - in rok : " << p_ring_in.cmd_w |
---|
| 445 | << " - isloc : " << islocal |
---|
| 446 | << " - addr : " << std::hex << rtgtid |
---|
| 447 | << " - brdcst : " << brdcst |
---|
| 448 | << " - in wok : " << p_ring_in.cmd_r |
---|
| 449 | << " - fifo wok : " << m_cmd_fifo.wok() |
---|
| 450 | << " - eop : " << eop |
---|
| 451 | << std::endl; |
---|
| 452 | #endif |
---|
| 453 | if(p_ring_in.cmd_w && !eop && brdcst && !m_cmd_fifo.wok()) { |
---|
| 454 | r_ring_cmd_fsm = BROADCAST_0; |
---|
| 455 | } |
---|
| 456 | |
---|
| 457 | if(p_ring_in.cmd_w && !eop && brdcst && m_cmd_fifo.wok()) { |
---|
| 458 | r_ring_cmd_fsm = BROADCAST_1; |
---|
| 459 | cmd_fifo_put = true; |
---|
| 460 | cmd_fifo_data = p_ring_in.cmd_data; |
---|
| 461 | |
---|
| 462 | } |
---|
| 463 | |
---|
| 464 | if (p_ring_in.cmd_w && !eop && !brdcst && islocal) { |
---|
| 465 | r_ring_cmd_fsm = LOCAL; |
---|
| 466 | cmd_fifo_put = m_cmd_fifo.wok(); |
---|
| 467 | cmd_fifo_data = p_ring_in.cmd_data; |
---|
| 468 | |
---|
| 469 | } |
---|
| 470 | |
---|
| 471 | if (p_ring_in.cmd_w && !eop && !brdcst && !islocal) { |
---|
| 472 | r_ring_cmd_fsm = RING; |
---|
| 473 | } |
---|
| 474 | |
---|
| 475 | if (!p_ring_in.cmd_w || eop) { |
---|
| 476 | r_ring_cmd_fsm = CMD_IDLE; |
---|
| 477 | } |
---|
| 478 | |
---|
| 479 | } |
---|
| 480 | |
---|
| 481 | break; |
---|
| 482 | |
---|
| 483 | case BROADCAST_0: |
---|
| 484 | |
---|
| 485 | #ifdef TR_DEBUG |
---|
| 486 | if( trace(sc_time_stamp())) |
---|
| 487 | std::cout << sc_time_stamp() << " -- " << m_name |
---|
| 488 | << " -- ring_cmd_fsm -- BROADCAST_0 " |
---|
| 489 | << " -- ringin cmd rok : " << p_ring_in.cmd_w |
---|
| 490 | << " -- ringin cmd wok : " << p_ring_in.cmd_r |
---|
| 491 | << " -- ringin data : " << std::hex << p_ring_in.cmd_data |
---|
| 492 | << " -- fifo cmd wok : " << m_cmd_fifo.wok() |
---|
| 493 | << std::endl; |
---|
| 494 | #endif |
---|
| 495 | if ( m_cmd_fifo.wok() ) |
---|
| 496 | { |
---|
| 497 | cmd_fifo_data = p_ring_in.cmd_data; |
---|
| 498 | r_ring_cmd_fsm = BROADCAST_1; |
---|
| 499 | |
---|
| 500 | } else { |
---|
| 501 | r_ring_cmd_fsm = BROADCAST_0; |
---|
| 502 | } |
---|
| 503 | |
---|
| 504 | break; |
---|
| 505 | |
---|
| 506 | case BROADCAST_1: |
---|
| 507 | { |
---|
| 508 | #ifdef TR_DEBUG |
---|
| 509 | if( trace(sc_time_stamp())) |
---|
| 510 | std::cout << sc_time_stamp() << " -- " << m_name |
---|
| 511 | << " -- ring_cmd_fsm -- BROADCAST_1 " |
---|
| 512 | << " -- ringin cmd rok : " << p_ring_in.cmd_w |
---|
| 513 | << " -- ringin cmd wok : " << p_ring_in.cmd_r |
---|
| 514 | << " -- ringin data : " << std::hex << p_ring_in.cmd_data |
---|
| 515 | << " -- fifo cmd wok : " << m_cmd_fifo.wok() |
---|
| 516 | << std::endl; |
---|
| 517 | #endif |
---|
| 518 | |
---|
| 519 | bool eop = ( (int) ((p_ring_in.cmd_data >> (ring_cmd_data_size - 1) ) & 0x1) == 1); |
---|
| 520 | |
---|
| 521 | if ( p_ring_in.cmd_w && m_cmd_fifo.wok() && eop ) |
---|
| 522 | { |
---|
| 523 | cmd_fifo_data = p_ring_in.cmd_data; |
---|
| 524 | cmd_fifo_put = 1; |
---|
| 525 | r_ring_cmd_fsm = CMD_IDLE; |
---|
| 526 | |
---|
| 527 | } |
---|
| 528 | else { |
---|
| 529 | r_ring_cmd_fsm = BROADCAST_1; |
---|
| 530 | } |
---|
| 531 | |
---|
| 532 | } |
---|
| 533 | break; |
---|
| 534 | |
---|
| 535 | case LOCAL: |
---|
| 536 | { |
---|
| 537 | |
---|
| 538 | bool eop = ( (int) ((p_ring_in.cmd_data >> (ring_cmd_data_size - 1) ) & 0x1) == 1); |
---|
| 539 | #ifdef TR_DEBUG |
---|
| 540 | if( trace(sc_time_stamp())) |
---|
| 541 | std::cout << sc_time_stamp() << " -- " << m_name |
---|
| 542 | << " -- ring_cmd_fsm -- LOCAL " |
---|
| 543 | << " -- in cmd rok : " << p_ring_in.cmd_w |
---|
| 544 | << " -- in cmd wok : " << p_ring_in.cmd_r |
---|
| 545 | << " -- in data : " << std::hex << p_ring_in.cmd_data |
---|
| 546 | << " -- fifo wok : " << m_cmd_fifo.wok() |
---|
| 547 | << " -- eop : " << eop |
---|
| 548 | << std::endl; |
---|
| 549 | #endif |
---|
| 550 | |
---|
| 551 | if ( p_ring_in.cmd_w && m_cmd_fifo.wok() && eop ) |
---|
| 552 | { |
---|
| 553 | |
---|
| 554 | cmd_fifo_put = true; |
---|
| 555 | cmd_fifo_data = p_ring_in.cmd_data; |
---|
| 556 | r_ring_cmd_fsm = CMD_IDLE; |
---|
| 557 | |
---|
| 558 | } |
---|
| 559 | |
---|
| 560 | if ( !p_ring_in.cmd_w || !m_cmd_fifo.wok() || !eop ) |
---|
| 561 | { |
---|
| 562 | |
---|
| 563 | cmd_fifo_put = p_ring_in.cmd_w && m_cmd_fifo.wok(); |
---|
| 564 | cmd_fifo_data = p_ring_in.cmd_data; |
---|
| 565 | r_ring_cmd_fsm = LOCAL; |
---|
| 566 | |
---|
| 567 | } |
---|
| 568 | } |
---|
| 569 | break; |
---|
| 570 | |
---|
| 571 | case RING: |
---|
| 572 | { |
---|
| 573 | |
---|
| 574 | bool eop = ( (int) ((p_ring_in.cmd_data >> (ring_cmd_data_size - 1) ) & 0x1) == 1); |
---|
| 575 | |
---|
| 576 | #ifdef TR_DEBUG |
---|
| 577 | if( trace(sc_time_stamp())) |
---|
| 578 | std::cout << sc_time_stamp() << " -- " << m_name |
---|
| 579 | << " -- ring_cmd_fsm -- RING " |
---|
| 580 | << " -- in cmd rok : " << p_ring_in.cmd_w |
---|
| 581 | << " -- in data : " << std::hex << p_ring_in.cmd_data |
---|
| 582 | << " -- in wok : " << p_ring_in.cmd_r |
---|
| 583 | << " -- eop : " << eop |
---|
| 584 | << std::endl; |
---|
| 585 | #endif |
---|
| 586 | if ( p_ring_in.cmd_w && eop ) { |
---|
| 587 | r_ring_cmd_fsm = CMD_IDLE; |
---|
| 588 | } |
---|
| 589 | else { |
---|
| 590 | r_ring_cmd_fsm = RING; |
---|
| 591 | } |
---|
| 592 | } |
---|
| 593 | break; |
---|
| 594 | |
---|
| 595 | } // end switch cmd fsm |
---|
| 596 | |
---|
| 597 | //////////////////////// |
---|
| 598 | // fifos update // |
---|
| 599 | //////////////////////// |
---|
| 600 | |
---|
| 601 | // local cmd fifo update |
---|
| 602 | if ( cmd_fifo_put && cmd_fifo_get ) m_cmd_fifo.put_and_get(cmd_fifo_data); |
---|
| 603 | else if ( cmd_fifo_put && !cmd_fifo_get ) m_cmd_fifo.simple_put(cmd_fifo_data); |
---|
| 604 | else if ( !cmd_fifo_put && cmd_fifo_get ) m_cmd_fifo.simple_get(); |
---|
| 605 | // local rsp fifo update |
---|
| 606 | if ( rsp_fifo_put && rsp_fifo_get ) m_rsp_fifo.put_and_get(rsp_fifo_data); |
---|
| 607 | else if ( rsp_fifo_put && !rsp_fifo_get ) m_rsp_fifo.simple_put(rsp_fifo_data); |
---|
| 608 | else if ( !rsp_fifo_put && rsp_fifo_get ) m_rsp_fifo.simple_get(); |
---|
| 609 | |
---|
| 610 | } // end Transition() |
---|
| 611 | |
---|
| 612 | /////////////////////////////////////////////////////////////////// |
---|
| 613 | void genMoore(vci_initiator_t &p_vci) |
---|
| 614 | /////////////////////////////////////////////////////////////////// |
---|
| 615 | { |
---|
| 616 | if( r_vci_rsp_fsm == RSP_HEADER ) |
---|
| 617 | p_vci.rspack = false; |
---|
| 618 | else |
---|
| 619 | p_vci.rspack = m_rsp_fifo.wok(); |
---|
| 620 | |
---|
| 621 | switch ( r_vci_cmd_fsm ) |
---|
| 622 | { |
---|
| 623 | case CMD_FIRST_HEADER: |
---|
| 624 | p_vci.cmdval = false; |
---|
| 625 | |
---|
| 626 | break; |
---|
| 627 | |
---|
| 628 | case CMD_SECOND_HEADER: |
---|
| 629 | if(((int) (m_cmd_fifo.read() >> (ring_cmd_data_size - 1) ) & 0x1) == 1) // eop |
---|
| 630 | { |
---|
| 631 | p_vci.cmdval = m_cmd_fifo.rok(); |
---|
| 632 | p_vci.address = (sc_uint<vci_param::N>) r_addr.read(); |
---|
| 633 | p_vci.cmd = (sc_uint<2>) ((m_cmd_fifo.read() >> 18) & 0x3); |
---|
| 634 | p_vci.be = 0xF; |
---|
| 635 | p_vci.wdata = 0; |
---|
| 636 | p_vci.pktid = (sc_uint<vci_param::P>) ((m_cmd_fifo.read() >> 4) & 0xF); |
---|
| 637 | p_vci.srcid = (sc_uint<vci_param::S>) (m_cmd_fifo.read() >> 20) ; |
---|
| 638 | p_vci.trdid = (sc_uint<vci_param::T>) (m_cmd_fifo.read() & 0xF); |
---|
| 639 | p_vci.plen = (sc_uint<vci_param::K>) ((m_cmd_fifo.read() >> 8) & 0xFF); |
---|
| 640 | p_vci.eop = true; |
---|
| 641 | sc_uint<1> cons = (sc_uint<1>) ((m_cmd_fifo.read() >> 16) & 0x1) ; |
---|
| 642 | if (cons == 0x1) |
---|
| 643 | p_vci.cons = true; |
---|
| 644 | else |
---|
| 645 | p_vci.cons = false; |
---|
| 646 | sc_uint<1> contig = (sc_uint<1>) ((m_cmd_fifo.read() >> 17) & 0x1); |
---|
| 647 | if(contig == 0x1) |
---|
| 648 | p_vci.contig = true; |
---|
| 649 | else |
---|
| 650 | p_vci.contig = false; |
---|
| 651 | } |
---|
| 652 | else |
---|
| 653 | p_vci.cmdval = false; |
---|
| 654 | break; |
---|
| 655 | |
---|
| 656 | case WDATA: |
---|
| 657 | { // for variable scope |
---|
| 658 | |
---|
| 659 | p_vci.cmdval = m_cmd_fifo.rok(); |
---|
| 660 | p_vci.address = (sc_uint<vci_param::N>) r_addr.read(); |
---|
| 661 | p_vci.be = (sc_uint<vci_param::B>)((m_cmd_fifo.read() >> 32) & 0xF); |
---|
| 662 | p_vci.cmd = r_cmd; |
---|
| 663 | p_vci.wdata = (sc_uint<32>)(m_cmd_fifo.read()); |
---|
| 664 | p_vci.pktid = r_pktid; |
---|
| 665 | p_vci.srcid = r_srcid; |
---|
| 666 | p_vci.trdid = r_trdid; |
---|
| 667 | p_vci.plen = r_plen; |
---|
| 668 | sc_uint<1> cons = r_const; |
---|
| 669 | if (cons == 0x1) |
---|
| 670 | p_vci.cons = true; |
---|
| 671 | else |
---|
| 672 | p_vci.cons = false; |
---|
| 673 | sc_uint<1> contig = r_contig; |
---|
| 674 | if(contig == 0x1) |
---|
| 675 | p_vci.contig = true; |
---|
| 676 | else |
---|
| 677 | p_vci.contig = false; |
---|
| 678 | if(((int) (m_cmd_fifo.read() >> (ring_cmd_data_size - 1) ) & 0x1) == 1) |
---|
| 679 | p_vci.eop = true; |
---|
| 680 | else |
---|
| 681 | p_vci.eop = false; |
---|
| 682 | } |
---|
| 683 | break; |
---|
| 684 | |
---|
| 685 | } // end switch fsm |
---|
| 686 | } // end genMoore |
---|
| 687 | |
---|
| 688 | /////////////////////////////////////////////////////////////////// |
---|
| 689 | void update_ring_signals(ring_signal_t p_ring_in, ring_signal_t &p_ring_out) |
---|
| 690 | /////////////////////////////////////////////////////////////////// |
---|
| 691 | { |
---|
| 692 | |
---|
| 693 | switch( r_ring_rsp_fsm ) |
---|
| 694 | { |
---|
| 695 | case RSP_IDLE: |
---|
| 696 | p_ring_out.rsp_grant = p_ring_in.rsp_grant && !m_rsp_fifo.rok(); |
---|
| 697 | |
---|
| 698 | p_ring_out.rsp_w = p_ring_in.rsp_w; |
---|
| 699 | p_ring_out.rsp_data = p_ring_in.rsp_data; |
---|
| 700 | |
---|
| 701 | p_ring_out.rsp_r = p_ring_in.rsp_r; |
---|
| 702 | break; |
---|
| 703 | |
---|
| 704 | case DEFAULT: |
---|
| 705 | p_ring_out.rsp_grant = !( m_rsp_fifo.rok()); |
---|
| 706 | |
---|
| 707 | p_ring_out.rsp_w = m_rsp_fifo.rok(); |
---|
| 708 | p_ring_out.rsp_data = m_rsp_fifo.read(); |
---|
| 709 | |
---|
| 710 | p_ring_out.rsp_r = 1; |
---|
| 711 | break; |
---|
| 712 | |
---|
| 713 | case KEEP: |
---|
| 714 | int rsp_fifo_eop = (int) ((m_rsp_fifo.read() >> 32) & 0x1); |
---|
| 715 | p_ring_out.rsp_grant = m_rsp_fifo.rok() && p_ring_in.rsp_r && (rsp_fifo_eop == 1); |
---|
| 716 | |
---|
| 717 | p_ring_out.rsp_w = m_rsp_fifo.rok(); |
---|
| 718 | p_ring_out.rsp_data = m_rsp_fifo.read(); |
---|
| 719 | |
---|
| 720 | p_ring_out.rsp_r = 1; |
---|
| 721 | |
---|
| 722 | break; |
---|
| 723 | |
---|
| 724 | } // end switch |
---|
| 725 | |
---|
| 726 | p_ring_out.cmd_w = p_ring_in.cmd_w; |
---|
| 727 | p_ring_out.cmd_data = p_ring_in.cmd_data; |
---|
| 728 | |
---|
| 729 | p_ring_out.cmd_grant = p_ring_in.cmd_grant; |
---|
| 730 | |
---|
| 731 | switch( r_ring_cmd_fsm ) |
---|
| 732 | { |
---|
| 733 | case CMD_IDLE: |
---|
| 734 | { |
---|
| 735 | vci_addr_t rtgtid = (vci_addr_t) ((p_ring_in.cmd_data >> 1) << 2); |
---|
| 736 | bool islocal = m_lt[rtgtid] && (m_rt[rtgtid] == (vci_addr_t) m_tgtid); |
---|
| 737 | bool brdcst = (p_ring_in.cmd_data & 0x1) == 0X1 ; |
---|
| 738 | bool eop = ( (int) ((p_ring_in.cmd_data >> (ring_cmd_data_size - 1) ) & 0x1) == 1); |
---|
| 739 | |
---|
| 740 | if(p_ring_in.cmd_w && !eop && brdcst && !m_cmd_fifo.wok()) { |
---|
| 741 | p_ring_out.cmd_r = m_cmd_fifo.wok() && p_ring_in.cmd_r; |
---|
| 742 | } |
---|
| 743 | |
---|
| 744 | if(p_ring_in.cmd_w && !eop && brdcst && m_cmd_fifo.wok()) { |
---|
| 745 | p_ring_out.cmd_r = m_cmd_fifo.wok() && p_ring_in.cmd_r; |
---|
| 746 | |
---|
| 747 | } |
---|
| 748 | |
---|
| 749 | if (p_ring_in.cmd_w && !eop && !brdcst && islocal) { |
---|
| 750 | p_ring_out.cmd_r = m_cmd_fifo.wok(); |
---|
| 751 | |
---|
| 752 | } |
---|
| 753 | |
---|
| 754 | if (p_ring_in.cmd_w && !eop && !brdcst && !islocal) { |
---|
| 755 | p_ring_out.cmd_r = p_ring_in.cmd_r; |
---|
| 756 | } |
---|
| 757 | |
---|
| 758 | if (!p_ring_in.cmd_w || eop) { |
---|
| 759 | p_ring_out.cmd_r = p_ring_in.cmd_r; |
---|
| 760 | } |
---|
| 761 | |
---|
| 762 | |
---|
| 763 | } |
---|
| 764 | break; |
---|
| 765 | |
---|
| 766 | case BROADCAST_0: |
---|
| 767 | p_ring_out.cmd_r = m_cmd_fifo.wok() && p_ring_in.cmd_r; |
---|
| 768 | break; |
---|
| 769 | |
---|
| 770 | case BROADCAST_1: |
---|
| 771 | p_ring_out.cmd_r = m_cmd_fifo.wok() && p_ring_in.cmd_r; |
---|
| 772 | break; |
---|
| 773 | |
---|
| 774 | case LOCAL: |
---|
| 775 | |
---|
| 776 | p_ring_out.cmd_r = m_cmd_fifo.wok(); |
---|
| 777 | break; |
---|
| 778 | |
---|
| 779 | case RING: |
---|
| 780 | |
---|
| 781 | p_ring_out.cmd_r = p_ring_in.cmd_r; |
---|
| 782 | break; |
---|
| 783 | } // end switch |
---|
| 784 | |
---|
| 785 | } // end update_ring_signals |
---|
| 786 | |
---|
| 787 | }; |
---|
| 788 | |
---|
| 789 | }} // end namespace |
---|
| 790 | |
---|
| 791 | |
---|