| 1 | |
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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 : Februrary 2011 |
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| 24 | * Copyright: UPMC - LIP6 |
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| 25 | */ |
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| 26 | #ifndef DSPIN_HALF_GATEWAY_INITIATOR_FAST_H |
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| 27 | #define DSPIN_HALF_GATEWAY_INITIATOR_FAST_H |
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| 28 | |
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| 29 | #include "caba_base_module.h" |
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| 30 | #include "generic_fifo.h" |
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| 31 | #include "mapping_table.h" |
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| 32 | #include "ring_signals_fast.h" |
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| 33 | #include "dspin_interface.h" |
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| 34 | |
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| 35 | #define BRDCST_TGT_MASK 0xFFFFFFFFE1ULL |
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| 36 | #define HI_DEBUG |
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| 37 | |
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| 38 | namespace soclib { namespace caba { |
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| 39 | |
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| 40 | namespace { |
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| 41 | |
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| 42 | const char *ring_cmd_fsm_state_str_hi[] = { |
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| 43 | "CMD_IDLE", |
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| 44 | "OWNER", |
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| 45 | "BDC_FIRST", |
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| 46 | "BDC_SECOND", |
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| 47 | "SENDING", |
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| 48 | }; |
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| 49 | |
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| 50 | #ifdef HI_DEBUG |
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| 51 | |
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| 52 | const char *ring_rsp_fsm_state_str_hi[] = { |
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| 53 | "RSP_IDLE", |
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| 54 | "ALLOC", |
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| 55 | "NALLOC", |
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| 56 | }; |
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| 57 | #endif |
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| 58 | |
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| 59 | } |
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| 60 | template<typename vci_param, int ring_cmd_data_size, int ring_rsp_data_size> |
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| 61 | class DspinHalfGatewayInitiatorFastC |
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| 62 | { |
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| 63 | |
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| 64 | typedef LocalRingSignals ring_signal_t; |
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| 65 | typedef DspinInput<ring_cmd_data_size> cmd_in_t; |
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| 66 | typedef DspinOutput<ring_rsp_data_size> rsp_out_t; |
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| 67 | |
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| 68 | private: |
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| 69 | |
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| 70 | enum ring_rsp_fsm_state_e { |
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| 71 | RSP_IDLE, // waiting for first flit of a response packet |
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| 72 | ALLOC, // next flit of a local rsp packet |
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| 73 | NALLOC, // next flit of a ring rsp packet |
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| 74 | }; |
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| 75 | |
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| 76 | enum ring_cmd_fsm_state_e { |
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| 77 | CMD_IDLE, |
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| 78 | OWNER, |
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| 79 | BDC_FIRST, |
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| 80 | BDC_SECOND, |
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| 81 | SENDING, |
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| 82 | PREEMPT, |
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| 83 | }; |
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| 84 | |
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| 85 | // structural parameters |
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| 86 | std::string m_name; |
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| 87 | bool m_alloc_init; |
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| 88 | |
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| 89 | |
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| 90 | // internal fifos |
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| 91 | GenericFifo<uint64_t > m_cmd_fifo; // fifo for the local command packet |
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| 92 | GenericFifo<uint64_t > m_rsp_fifo; // fifo for the local response packet |
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| 93 | |
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| 94 | // routing table |
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| 95 | soclib::common::AddressDecodingTable<uint32_t, bool> m_lt; |
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| 96 | |
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| 97 | uint64_t r_brdcst_save; |
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| 98 | uint32_t m_srcid; |
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| 99 | uint32_t m_nb_target; |
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| 100 | uint32_t m_x_width; |
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| 101 | uint32_t m_y_width; |
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| 102 | |
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| 103 | // internal registers |
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| 104 | sc_core::sc_signal<bool> r_preempt; // ring preempted, priority to gate init. |
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| 105 | sc_core::sc_signal<uint32_t> r_cpt_tgt; // target id for sequential broadcast |
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| 106 | sc_core::sc_signal<uint32_t> r_ring_cmd_fsm; // ring command packet FSM (distributed) |
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| 107 | sc_core::sc_signal<uint32_t> r_ring_rsp_fsm; // ring response packet FSM |
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| 108 | |
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| 109 | public : |
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| 110 | |
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| 111 | #define __renRegGateInit(x) x((((std::string) name)+"_" #x).c_str()) |
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| 112 | |
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| 113 | DspinHalfGatewayInitiatorFastC( |
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| 114 | const char *name, |
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| 115 | bool alloc_init, |
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| 116 | const int &wrapper_fifo_depth, |
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| 117 | const soclib::common::MappingTable &mt, |
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| 118 | const soclib::common::IntTab &ringid, |
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| 119 | const uint32_t &nb_target, |
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| 120 | const uint32_t &x_width, |
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| 121 | const uint32_t &y_width) |
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| 122 | : m_name(name), |
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| 123 | m_alloc_init(alloc_init), |
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| 124 | m_cmd_fifo(((std::string) name)+"m_cmd_fifo", wrapper_fifo_depth), |
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| 125 | m_rsp_fifo(((std::string) name)+"m_rsp_fifo", wrapper_fifo_depth), |
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| 126 | m_lt(mt.getIdLocalityTable(ringid)), |
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| 127 | m_nb_target(nb_target), |
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| 128 | m_x_width(x_width), |
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| 129 | m_y_width(y_width), |
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| 130 | __renRegGateInit(r_cpt_tgt), |
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| 131 | __renRegGateInit(r_ring_cmd_fsm), |
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| 132 | __renRegGateInit(r_ring_rsp_fsm) |
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| 133 | { } // end constructor |
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| 134 | |
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| 135 | |
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| 136 | void reset() |
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| 137 | { |
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| 138 | if(m_alloc_init) |
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| 139 | r_ring_cmd_fsm = OWNER; |
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| 140 | else |
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| 141 | r_ring_cmd_fsm = CMD_IDLE; |
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| 142 | |
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| 143 | r_ring_rsp_fsm = RSP_IDLE; |
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| 144 | m_cmd_fifo.init(); |
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| 145 | m_rsp_fifo.init(); |
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| 146 | |
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| 147 | } |
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| 148 | |
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| 149 | void transition(const cmd_in_t &p_gate_cmd_in, const rsp_out_t &p_gate_rsp_out, const ring_signal_t p_ring_in, cmd_str &init_cmd, bool &init_rsp_val, const bool tga) |
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| 150 | { |
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| 151 | |
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| 152 | bool cmd_fifo_get = false; |
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| 153 | bool cmd_fifo_put = false; |
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| 154 | uint64_t cmd_fifo_data = 0; |
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| 155 | |
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| 156 | bool rsp_fifo_put = false; |
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| 157 | uint64_t rsp_fifo_data = 0; |
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| 158 | |
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| 159 | |
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| 160 | //////////// VCI CMD FSM ///////////////////////// |
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| 161 | |
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| 162 | if (p_gate_cmd_in.write.read()) { |
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| 163 | cmd_fifo_data = (uint64_t) p_gate_cmd_in.data.read(); |
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| 164 | cmd_fifo_put = m_cmd_fifo.wok(); |
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| 165 | } |
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| 166 | |
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| 167 | bool rsp_fifo_get = p_gate_rsp_out.read.read(); |
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| 168 | |
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| 169 | //////////// RING CMD FSM ///////////////////////// |
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| 170 | switch( r_ring_cmd_fsm ) |
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| 171 | { |
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| 172 | case CMD_IDLE: |
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| 173 | { |
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| 174 | bool eop = ( (int) ((m_cmd_fifo.read() >> (ring_cmd_data_size - 1) ) & 0x1) == 1); |
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| 175 | // tga : target gate allocated |
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| 176 | if(m_cmd_fifo.rok()) |
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| 177 | { |
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| 178 | #ifdef HI_DEBUG |
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| 179 | std::cout << std::dec << sc_time_stamp() << " - " << m_name |
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| 180 | << " - ring_cmd_fsm = " << ring_cmd_fsm_state_str_hi[r_ring_cmd_fsm] |
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| 181 | << " - fifo ROK : " << m_cmd_fifo.rok() |
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| 182 | << " - fifo _data : " << std::hex << m_cmd_fifo.read() |
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| 183 | << " - in grant : " << p_ring_in.cmd_grant |
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| 184 | << " - in tga : " << tga |
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| 185 | << " - in wok : " << p_ring_in.cmd_r |
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| 186 | << " - in data : " << p_ring_in.cmd_data |
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| 187 | |
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| 188 | << std::endl; |
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| 189 | #endif |
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| 190 | r_preempt = tga; |
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| 191 | |
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| 192 | if (m_cmd_fifo.read() & 0x1 == 0x1) // broadcast |
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| 193 | { |
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| 194 | if (tga || p_ring_in.cmd_grant) |
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| 195 | { |
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| 196 | r_cpt_tgt = 0; |
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| 197 | r_brdcst_save = m_cmd_fifo.read() & BRDCST_TGT_MASK; // save first flit of brdcst |
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| 198 | r_ring_cmd_fsm = BDC_FIRST; |
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| 199 | } |
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| 200 | } |
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| 201 | else if (tga) |
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| 202 | { |
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| 203 | |
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| 204 | cmd_fifo_get = p_ring_in.cmd_r; |
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| 205 | if (eop) |
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| 206 | r_ring_cmd_fsm = CMD_IDLE; |
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| 207 | else |
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| 208 | r_ring_cmd_fsm = SENDING; |
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| 209 | break; |
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| 210 | } |
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| 211 | |
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| 212 | if(p_ring_in.cmd_grant) |
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| 213 | { |
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| 214 | r_ring_cmd_fsm = SENDING; |
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| 215 | } |
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| 216 | |
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| 217 | } |
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| 218 | } |
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| 219 | break; |
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| 220 | |
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| 221 | case OWNER: |
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| 222 | if ( m_cmd_fifo.rok()) // && p_ring_in.cmd_wok.read() ) |
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| 223 | { |
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| 224 | #ifdef HI_DEBUG |
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| 225 | std::cout << std::dec << sc_time_stamp() << " - " << m_name |
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| 226 | << " - ring_cmd_fsm = " << ring_cmd_fsm_state_str_hi[r_ring_cmd_fsm] |
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| 227 | << " - fifo ROK : " << m_cmd_fifo.rok() |
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| 228 | << " - in grant : " << p_ring_in.cmd_grant |
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| 229 | << " - in wok : " << p_ring_in.cmd_r |
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| 230 | << " - fifo data : " << std::hex << m_cmd_fifo.read() |
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| 231 | << std::endl; |
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| 232 | #endif |
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| 233 | |
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| 234 | bool eop = ( (int) ((m_cmd_fifo.read() >> (ring_cmd_data_size - 1) ) & 0x1) == 1); |
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| 235 | |
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| 236 | if (m_cmd_fifo.read() & 0x1 == 0x1) // broadcast |
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| 237 | { |
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| 238 | r_cpt_tgt = 0; |
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| 239 | r_brdcst_save = m_cmd_fifo.read() & BRDCST_TGT_MASK; // save first flit of brdcst |
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| 240 | r_ring_cmd_fsm = BDC_FIRST; |
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| 241 | } |
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| 242 | // |
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| 243 | else |
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| 244 | { |
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| 245 | if ( eop && p_ring_in.cmd_r ) |
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| 246 | { |
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| 247 | cmd_fifo_get = true; |
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| 248 | if ( p_ring_in.cmd_grant ) |
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| 249 | r_ring_cmd_fsm = OWNER; |
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| 250 | else |
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| 251 | r_ring_cmd_fsm = CMD_IDLE; |
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| 252 | } |
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| 253 | |
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| 254 | if (!eop || !p_ring_in.cmd_r) |
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| 255 | { |
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| 256 | cmd_fifo_get = p_ring_in.cmd_r; |
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| 257 | r_ring_cmd_fsm = SENDING; |
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| 258 | } |
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| 259 | |
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| 260 | } |
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| 261 | |
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| 262 | } |
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| 263 | else if ( !p_ring_in.cmd_grant) |
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| 264 | r_ring_cmd_fsm = CMD_IDLE; |
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| 265 | break; |
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| 266 | |
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| 267 | case BDC_FIRST: |
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| 268 | |
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| 269 | #ifdef HI_DEBUG |
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| 270 | std::cout << std::dec << sc_time_stamp() << " - " << m_name |
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| 271 | << " - ring_cmd_fsm = " << ring_cmd_fsm_state_str_hi[r_ring_cmd_fsm] |
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| 272 | << " - fifo ROK : " << m_cmd_fifo.rok() |
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| 273 | << " - in grant : " << p_ring_in.cmd_grant |
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| 274 | << " - preempt : " << r_preempt |
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| 275 | << " - in wok : " << p_ring_in.cmd_r |
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| 276 | << " - cpt_tgt : " << r_cpt_tgt.read() |
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| 277 | << " - fifo data : " << std::hex << m_cmd_fifo.read() |
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| 278 | << std::endl; |
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| 279 | |
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| 280 | #endif |
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| 281 | |
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| 282 | if (p_ring_in.cmd_r) |
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| 283 | { |
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| 284 | if (r_cpt_tgt.read() == 0) |
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| 285 | { |
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| 286 | cmd_fifo_get = true; |
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| 287 | } |
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| 288 | r_ring_cmd_fsm = BDC_SECOND; |
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| 289 | } |
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| 290 | break; |
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| 291 | |
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| 292 | case BDC_SECOND: |
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| 293 | #ifdef HI_DEBUG |
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| 294 | std::cout << std::dec << sc_time_stamp() << " - " << m_name |
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| 295 | << " - ring_cmd_fsm = " << ring_cmd_fsm_state_str_hi[r_ring_cmd_fsm] |
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| 296 | << " - fifo ROK : " << m_cmd_fifo.rok() |
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| 297 | << " - in grant : " << p_ring_in.cmd_grant |
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| 298 | << " - preempt : " << r_preempt |
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| 299 | << " - in wok : " << p_ring_in.cmd_r |
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| 300 | << " - fifo data : " << std::hex << m_cmd_fifo.read() |
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| 301 | << std::endl; |
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| 302 | |
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| 303 | #endif |
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| 304 | |
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| 305 | if(m_cmd_fifo.rok() && p_ring_in.cmd_r) |
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| 306 | { |
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| 307 | if(r_cpt_tgt.read() == m_nb_target - 1) |
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| 308 | { |
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| 309 | cmd_fifo_get = true; |
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| 310 | |
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| 311 | if ( !r_preempt && p_ring_in.cmd_grant ) |
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| 312 | { |
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| 313 | r_ring_cmd_fsm = OWNER; |
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| 314 | } |
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| 315 | else //r_preempt || !p_ring_in.cmd_grant |
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| 316 | { |
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| 317 | r_ring_cmd_fsm = CMD_IDLE; |
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| 318 | } |
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| 319 | } |
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| 320 | else |
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| 321 | { |
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| 322 | r_cpt_tgt = r_cpt_tgt + 1; |
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| 323 | r_ring_cmd_fsm = BDC_FIRST; |
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| 324 | } |
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| 325 | |
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| 326 | } |
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| 327 | break; |
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| 328 | |
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| 329 | case SENDING: |
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| 330 | #ifdef HI_DEBUG |
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| 331 | if(m_cmd_fifo.rok()) |
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| 332 | std::cout << std::dec << sc_time_stamp() << " - " << m_name |
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| 333 | << " - ring_cmd_fsm = " << ring_cmd_fsm_state_str_hi[r_ring_cmd_fsm] |
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| 334 | << " - fifo ROK : " << m_cmd_fifo.rok() |
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| 335 | << " - in grant : " << p_ring_in.cmd_grant |
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| 336 | << " - in wok : " << p_ring_in.cmd_r |
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| 337 | << " - fifo data : " << std::hex << m_cmd_fifo.read() |
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| 338 | << std::endl; |
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| 339 | #endif |
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| 340 | |
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| 341 | |
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| 342 | if(m_cmd_fifo.rok() && p_ring_in.cmd_r ) |
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| 343 | { |
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| 344 | cmd_fifo_get = true; |
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| 345 | bool eop = ((int) (m_cmd_fifo.read() >> (ring_cmd_data_size - 1) ) & 0x1) == 1; |
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| 346 | if (eop) |
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| 347 | { |
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| 348 | if (!r_preempt && p_ring_in.cmd_grant ) |
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| 349 | r_ring_cmd_fsm = OWNER; |
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| 350 | else |
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| 351 | r_ring_cmd_fsm = CMD_IDLE; |
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| 352 | } |
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| 353 | } |
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| 354 | break; |
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| 355 | |
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| 356 | } // end switch ring cmd fsm |
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| 357 | |
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| 358 | /////////// RING RSP FSM //////////////////////// |
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| 359 | |
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| 360 | switch( r_ring_rsp_fsm ) |
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| 361 | { |
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| 362 | case RSP_IDLE: |
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| 363 | |
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| 364 | { |
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| 365 | uint32_t rsrcid = (uint32_t) ((sc_dt::sc_uint<vci_param::S>) ((p_ring_in.rsp_data >> (ring_rsp_data_size-m_x_width-m_y_width - 1)) << (vci_param::S-m_x_width-m_y_width))); |
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| 366 | bool islocal = !m_lt[rsrcid]; |
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| 367 | bool reop = ((p_ring_in.rsp_data >> (ring_rsp_data_size - 1)) & 0x1) == 1; |
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| 368 | |
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| 369 | |
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| 370 | |
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| 371 | if (p_ring_in.rsp_w) |
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| 372 | { |
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| 373 | #ifdef HI_DEBUG |
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| 374 | std::cout << std::dec << sc_time_stamp() << " - " << m_name |
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| 375 | << " - ring_rsp_fsm = " << ring_rsp_fsm_state_str_hi[r_ring_rsp_fsm] |
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| 376 | << " - in preempt : " << p_ring_in.rsp_preempt |
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| 377 | << " - in rok : " << p_ring_in.rsp_w |
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| 378 | << " - in data : " << std::hex << p_ring_in.rsp_data |
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| 379 | << " - rsrcid : " << rsrcid |
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| 380 | << " - isloc : " << islocal |
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| 381 | << " - in wok : " << p_ring_in.rsp_r |
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| 382 | << " - fifo wok : " << m_rsp_fifo.wok() |
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| 383 | << " - reop : " << reop |
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| 384 | << std::endl; |
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| 385 | #endif |
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| 386 | if(islocal) |
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| 387 | { |
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| 388 | rsp_fifo_put = m_rsp_fifo.wok(); |
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| 389 | rsp_fifo_data = p_ring_in.rsp_data; |
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| 390 | |
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| 391 | if (reop && m_rsp_fifo.wok()) |
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| 392 | r_ring_rsp_fsm = RSP_IDLE; |
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| 393 | else |
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| 394 | r_ring_rsp_fsm = ALLOC; |
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| 395 | } |
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| 396 | |
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| 397 | else // !islocal |
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| 398 | { |
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| 399 | |
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| 400 | if (reop && p_ring_in.rsp_r) |
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| 401 | r_ring_rsp_fsm = RSP_IDLE; |
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| 402 | else |
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| 403 | r_ring_rsp_fsm = NALLOC; |
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| 404 | } |
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| 405 | } |
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| 406 | else // !p_ring_in.rsp_w |
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| 407 | r_ring_rsp_fsm = RSP_IDLE; |
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| 408 | } |
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| 409 | break; |
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| 410 | |
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| 411 | case ALLOC: |
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| 412 | { |
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| 413 | bool reop = ((p_ring_in.rsp_data >> (ring_rsp_data_size - 1)) & 0x1) == 1; |
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| 414 | #ifdef HI_DEBUG |
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| 415 | if(p_ring_in.rsp_w || p_ring_in.rsp_preempt) |
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| 416 | std::cout << std::dec << sc_time_stamp() << " - " << m_name |
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| 417 | << " - ring_rsp_fsm = " << ring_rsp_fsm_state_str_hi[r_ring_rsp_fsm] |
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| 418 | << " - in preempt : " << p_ring_in.rsp_preempt |
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| 419 | << " - in rok : " << p_ring_in.rsp_w |
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| 420 | << " - in wok : " << p_ring_in.rsp_r |
|---|
| 421 | << " - in data : " << std::hex << p_ring_in.rsp_data |
|---|
| 422 | << " - fifo wok : " << m_rsp_fifo.wok() |
|---|
| 423 | << " - reop : " << reop |
|---|
| 424 | << std::endl; |
|---|
| 425 | #endif |
|---|
| 426 | |
|---|
| 427 | |
|---|
| 428 | if(p_ring_in.rsp_preempt) break; |
|---|
| 429 | |
|---|
| 430 | if (p_ring_in.rsp_w && m_rsp_fifo.wok() && reop) |
|---|
| 431 | { |
|---|
| 432 | |
|---|
| 433 | rsp_fifo_put = true; |
|---|
| 434 | rsp_fifo_data = p_ring_in.rsp_data; |
|---|
| 435 | |
|---|
| 436 | if(p_ring_in.rsp_palloc) |
|---|
| 437 | r_ring_rsp_fsm = NALLOC; |
|---|
| 438 | else |
|---|
| 439 | r_ring_rsp_fsm = RSP_IDLE; |
|---|
| 440 | } |
|---|
| 441 | else // !p_ring_in.rsp_w || !m_rsp_fifo.wok() || !reop |
|---|
| 442 | { |
|---|
| 443 | |
|---|
| 444 | rsp_fifo_put = p_ring_in.rsp_w && m_rsp_fifo.wok(); |
|---|
| 445 | rsp_fifo_data = p_ring_in.rsp_data; |
|---|
| 446 | r_ring_rsp_fsm = ALLOC; |
|---|
| 447 | } |
|---|
| 448 | } |
|---|
| 449 | break; |
|---|
| 450 | |
|---|
| 451 | case NALLOC: |
|---|
| 452 | { |
|---|
| 453 | |
|---|
| 454 | #ifdef HI_DEBUG |
|---|
| 455 | if(p_ring_in.rsp_w) |
|---|
| 456 | std::cout << std::dec << sc_time_stamp() << " - " << m_name |
|---|
| 457 | << " - ring_rsp_fsm = " << ring_rsp_fsm_state_str_hi[r_ring_rsp_fsm] |
|---|
| 458 | << " - in rok : " << p_ring_in.rsp_w |
|---|
| 459 | << " - fifo wok : " << m_rsp_fifo.wok() |
|---|
| 460 | << " - in wok : " << p_ring_in.rsp_r |
|---|
| 461 | << " - in data : " << std::hex << p_ring_in.rsp_data |
|---|
| 462 | << std::endl; |
|---|
| 463 | #endif |
|---|
| 464 | |
|---|
| 465 | bool reop = ((p_ring_in.rsp_data >> (ring_rsp_data_size - 1)) & 0x1) == 1; |
|---|
| 466 | |
|---|
| 467 | |
|---|
| 468 | if (p_ring_in.rsp_w && reop && p_ring_in.rsp_r) |
|---|
| 469 | { |
|---|
| 470 | r_ring_rsp_fsm = RSP_IDLE; |
|---|
| 471 | } |
|---|
| 472 | else |
|---|
| 473 | { |
|---|
| 474 | r_ring_rsp_fsm = NALLOC; |
|---|
| 475 | } |
|---|
| 476 | } |
|---|
| 477 | break; |
|---|
| 478 | |
|---|
| 479 | } // end switch rsp fsm |
|---|
| 480 | |
|---|
| 481 | |
|---|
| 482 | //////////////////////// |
|---|
| 483 | // fifos update // |
|---|
| 484 | //////////////////////// |
|---|
| 485 | |
|---|
| 486 | //-- keep trace on ring traffic |
|---|
| 487 | init_cmd.cmdval = cmd_fifo_get; |
|---|
| 488 | init_cmd.flit = m_cmd_fifo.read(); |
|---|
| 489 | init_cmd.state = ring_cmd_fsm_state_str_hi[r_ring_cmd_fsm]; |
|---|
| 490 | |
|---|
| 491 | //init_cmd_val = cmd_fifo_get; |
|---|
| 492 | init_rsp_val = rsp_fifo_put; |
|---|
| 493 | // local cmd fifo update |
|---|
| 494 | if ( cmd_fifo_put && cmd_fifo_get ) m_cmd_fifo.put_and_get(cmd_fifo_data); |
|---|
| 495 | else if ( cmd_fifo_put && !cmd_fifo_get ) m_cmd_fifo.simple_put(cmd_fifo_data); |
|---|
| 496 | else if ( !cmd_fifo_put && cmd_fifo_get ) m_cmd_fifo.simple_get(); |
|---|
| 497 | |
|---|
| 498 | // local rsp fifo update |
|---|
| 499 | if ( rsp_fifo_put && rsp_fifo_get ) m_rsp_fifo.put_and_get(rsp_fifo_data); |
|---|
| 500 | else if ( rsp_fifo_put && !rsp_fifo_get ) m_rsp_fifo.simple_put(rsp_fifo_data); |
|---|
| 501 | else if ( !rsp_fifo_put && rsp_fifo_get ) m_rsp_fifo.simple_get(); |
|---|
| 502 | |
|---|
| 503 | } // end Transition() |
|---|
| 504 | |
|---|
| 505 | /////////////////////////////////////////////////////////////////// |
|---|
| 506 | void genMoore(cmd_in_t &p_gate_cmd_in, rsp_out_t &p_gate_rsp_out) |
|---|
| 507 | /////////////////////////////////////////////////////////////////// |
|---|
| 508 | { |
|---|
| 509 | p_gate_rsp_out.write = m_rsp_fifo.rok(); |
|---|
| 510 | p_gate_rsp_out.data = (sc_dt::sc_uint<ring_rsp_data_size>) m_rsp_fifo.read(); |
|---|
| 511 | |
|---|
| 512 | p_gate_cmd_in.read= m_cmd_fifo.wok(); |
|---|
| 513 | |
|---|
| 514 | } // end genMoore |
|---|
| 515 | |
|---|
| 516 | ///////////////////////////////////////////////////////////////////////////////////////////////// |
|---|
| 517 | void update_ring_signals(ring_signal_t p_ring_in, ring_signal_t &p_ring_out, bool tga, bool &iga) |
|---|
| 518 | ///////////////////////////////////////////////////////////////////////////////////////////////// |
|---|
| 519 | // palloc may have 2 values : |
|---|
| 520 | // palloc = 2 : means Target Gate still allocated |
|---|
| 521 | // global state for targets : TG TL0 TL1 TL2 ... TLn |
|---|
| 522 | // A N N P2 N |
|---|
| 523 | // A N N N N |
|---|
| 524 | // palloc = 1 : means Target Gate free (not allocated) |
|---|
| 525 | // global state for targets : TG TL0 TL1 TL2 ... TLn |
|---|
| 526 | // A N N P2 N |
|---|
| 527 | // N N N P1 N |
|---|
| 528 | // I I I I I |
|---|
| 529 | // TLi not allocated, in case of preempt and last flit, needs to test value of palloc |
|---|
| 530 | // if palloc=1 => next state : IDLE (TG not allocated) |
|---|
| 531 | // else (palloc2=2) => next state : NALLOC (TG still Allocated) |
|---|
| 532 | { |
|---|
| 533 | switch( r_ring_cmd_fsm ) |
|---|
| 534 | { |
|---|
| 535 | case CMD_IDLE: |
|---|
| 536 | { |
|---|
| 537 | bool brdcst = (m_cmd_fifo.read() & 0x1 == 0x1); |
|---|
| 538 | |
|---|
| 539 | p_ring_out.cmd_grant = !m_cmd_fifo.rok() && p_ring_in.cmd_grant; |
|---|
| 540 | |
|---|
| 541 | if (m_cmd_fifo.rok() && tga && !brdcst) |
|---|
| 542 | { |
|---|
| 543 | p_ring_out.cmd_preempt = 1; |
|---|
| 544 | p_ring_out.cmd_palloc = 1; |
|---|
| 545 | p_ring_out.cmd_header = 1; |
|---|
| 546 | p_ring_out.cmd_w = 1; |
|---|
| 547 | p_ring_out.cmd_data = m_cmd_fifo.read(); |
|---|
| 548 | } |
|---|
| 549 | else |
|---|
| 550 | { |
|---|
| 551 | p_ring_out.cmd_preempt = 0; |
|---|
| 552 | p_ring_out.cmd_palloc = 0; |
|---|
| 553 | p_ring_out.cmd_header = 0; |
|---|
| 554 | p_ring_out.cmd_w = p_ring_in.cmd_w; |
|---|
| 555 | p_ring_out.cmd_data = p_ring_in.cmd_data; |
|---|
| 556 | } |
|---|
| 557 | |
|---|
| 558 | } |
|---|
| 559 | break; |
|---|
| 560 | |
|---|
| 561 | case OWNER: |
|---|
| 562 | { |
|---|
| 563 | bool eop = ((int) ((m_cmd_fifo.read() >> (ring_cmd_data_size - 1) ) & 0x1) == 1); |
|---|
| 564 | bool brdcst = (m_cmd_fifo.read() & 0x1 == 0x1); |
|---|
| 565 | |
|---|
| 566 | p_ring_out.cmd_grant = (!m_cmd_fifo.rok() || (eop && p_ring_in.cmd_r)) ; |
|---|
| 567 | |
|---|
| 568 | p_ring_out.cmd_preempt = 0; |
|---|
| 569 | p_ring_out.cmd_header = 0; |
|---|
| 570 | p_ring_out.cmd_palloc = 0; |
|---|
| 571 | p_ring_out.cmd_w = m_cmd_fifo.rok() && !brdcst; |
|---|
| 572 | p_ring_out.cmd_data = m_cmd_fifo.read(); |
|---|
| 573 | } |
|---|
| 574 | break; |
|---|
| 575 | |
|---|
| 576 | case BDC_FIRST: |
|---|
| 577 | if(r_preempt) |
|---|
| 578 | { |
|---|
| 579 | p_ring_out.cmd_header = 1; |
|---|
| 580 | p_ring_out.cmd_palloc = 1+(tga ? 1:0); |
|---|
| 581 | p_ring_out.cmd_preempt = 1; |
|---|
| 582 | p_ring_out.cmd_grant = p_ring_in.cmd_grant; |
|---|
| 583 | } |
|---|
| 584 | else |
|---|
| 585 | { |
|---|
| 586 | p_ring_out.cmd_header = 0; |
|---|
| 587 | p_ring_out.cmd_palloc = 0; |
|---|
| 588 | p_ring_out.cmd_preempt = 0; |
|---|
| 589 | p_ring_out.cmd_grant = false; |
|---|
| 590 | } |
|---|
| 591 | |
|---|
| 592 | p_ring_out.cmd_w = true; |
|---|
| 593 | p_ring_out.cmd_data = r_brdcst_save | ((((uint64_t) r_cpt_tgt.read()) & 0xF) << 0x1); |
|---|
| 594 | break; |
|---|
| 595 | |
|---|
| 596 | case BDC_SECOND: |
|---|
| 597 | |
|---|
| 598 | if (r_preempt) |
|---|
| 599 | { |
|---|
| 600 | p_ring_out.cmd_grant = p_ring_in.cmd_grant; |
|---|
| 601 | p_ring_out.cmd_palloc = 1+(tga ? 1:0); |
|---|
| 602 | |
|---|
| 603 | p_ring_out.cmd_preempt = m_cmd_fifo.rok(); //&& tga; |
|---|
| 604 | p_ring_out.cmd_header = 0; |
|---|
| 605 | |
|---|
| 606 | if ( m_cmd_fifo.rok() ) |
|---|
| 607 | { |
|---|
| 608 | p_ring_out.cmd_w = 1; //m_cmd_fifo.rok(); |
|---|
| 609 | p_ring_out.cmd_data = m_cmd_fifo.read(); |
|---|
| 610 | } |
|---|
| 611 | else |
|---|
| 612 | { |
|---|
| 613 | // if init local has finished, tga = 0 |
|---|
| 614 | // init gate remains the only initiator, then w = 0 |
|---|
| 615 | p_ring_out.cmd_w = p_ring_in.cmd_w && tga; |
|---|
| 616 | p_ring_out.cmd_data = p_ring_in.cmd_data; |
|---|
| 617 | } |
|---|
| 618 | } |
|---|
| 619 | else |
|---|
| 620 | { |
|---|
| 621 | // si on est dans cet etat, c'est qu'on n'utilise pas le cmd_preempt mais le gnt. |
|---|
| 622 | p_ring_out.cmd_preempt= 0; |
|---|
| 623 | p_ring_out.cmd_header = 0; |
|---|
| 624 | p_ring_out.cmd_palloc = 0; |
|---|
| 625 | p_ring_out.cmd_w = m_cmd_fifo.rok(); |
|---|
| 626 | p_ring_out.cmd_data = m_cmd_fifo.read(); |
|---|
| 627 | p_ring_out.cmd_grant = m_cmd_fifo.rok() && p_ring_in.cmd_r && (r_cpt_tgt.read() == m_nb_target - 1); |
|---|
| 628 | } |
|---|
| 629 | break; |
|---|
| 630 | |
|---|
| 631 | case SENDING: |
|---|
| 632 | { |
|---|
| 633 | |
|---|
| 634 | if (r_preempt) |
|---|
| 635 | { |
|---|
| 636 | p_ring_out.cmd_grant = p_ring_in.cmd_grant; |
|---|
| 637 | p_ring_out.cmd_palloc = 1+(tga ? 1:0); |
|---|
| 638 | |
|---|
| 639 | p_ring_out.cmd_preempt = m_cmd_fifo.rok(); //&& tga; |
|---|
| 640 | p_ring_out.cmd_header = 0; |
|---|
| 641 | |
|---|
| 642 | if ( m_cmd_fifo.rok() ) |
|---|
| 643 | { |
|---|
| 644 | p_ring_out.cmd_w = 1; //m_cmd_fifo.rok(); |
|---|
| 645 | p_ring_out.cmd_data = m_cmd_fifo.read(); |
|---|
| 646 | } |
|---|
| 647 | else |
|---|
| 648 | { |
|---|
| 649 | // if init local has finished, tga = 0 |
|---|
| 650 | // init gate remains the only initiator, then w = 0 |
|---|
| 651 | p_ring_out.cmd_w = p_ring_in.cmd_w && tga; |
|---|
| 652 | p_ring_out.cmd_data = p_ring_in.cmd_data; |
|---|
| 653 | } |
|---|
| 654 | } |
|---|
| 655 | else |
|---|
| 656 | { |
|---|
| 657 | bool eop = ((int) (m_cmd_fifo.read() >> (ring_cmd_data_size - 1) ) & 0x1) == 1; |
|---|
| 658 | // si on est dans cet etat, c'est qu'on n'utilise pas le cmd_preempt mais le gnt. |
|---|
| 659 | p_ring_out.cmd_preempt= 0; |
|---|
| 660 | p_ring_out.cmd_header = 0; |
|---|
| 661 | p_ring_out.cmd_palloc = 0; |
|---|
| 662 | p_ring_out.cmd_w = m_cmd_fifo.rok(); |
|---|
| 663 | p_ring_out.cmd_data = m_cmd_fifo.read(); |
|---|
| 664 | p_ring_out.cmd_grant = m_cmd_fifo.rok() && p_ring_in.cmd_r && eop; |
|---|
| 665 | } |
|---|
| 666 | } |
|---|
| 667 | break; |
|---|
| 668 | |
|---|
| 669 | } // end switch |
|---|
| 670 | |
|---|
| 671 | p_ring_out.cmd_r = p_ring_in.cmd_r; |
|---|
| 672 | |
|---|
| 673 | p_ring_out.rsp_w = p_ring_in.rsp_w; |
|---|
| 674 | p_ring_out.rsp_data = p_ring_in.rsp_data; |
|---|
| 675 | |
|---|
| 676 | p_ring_out.rsp_grant = p_ring_in.rsp_grant; |
|---|
| 677 | |
|---|
| 678 | p_ring_out.rsp_palloc = p_ring_in.rsp_palloc; |
|---|
| 679 | p_ring_out.rsp_preempt = p_ring_in.rsp_preempt; |
|---|
| 680 | p_ring_out.rsp_header = p_ring_in.rsp_header; |
|---|
| 681 | |
|---|
| 682 | |
|---|
| 683 | switch( r_ring_rsp_fsm ) |
|---|
| 684 | { |
|---|
| 685 | case RSP_IDLE: |
|---|
| 686 | { |
|---|
| 687 | uint32_t rsrcid = (uint32_t) ((sc_dt::sc_uint<vci_param::S>) ((p_ring_in.rsp_data >> (ring_rsp_data_size-m_x_width-m_y_width - 1)) << (vci_param::S-m_x_width-m_y_width))); |
|---|
| 688 | bool islocal = !m_lt[rsrcid]; |
|---|
| 689 | |
|---|
| 690 | iga = false; |
|---|
| 691 | |
|---|
| 692 | if(p_ring_in.rsp_w && islocal) |
|---|
| 693 | p_ring_out.rsp_r = m_rsp_fifo.wok(); |
|---|
| 694 | else |
|---|
| 695 | p_ring_out.rsp_r = p_ring_in.rsp_r; |
|---|
| 696 | } |
|---|
| 697 | break; |
|---|
| 698 | |
|---|
| 699 | case ALLOC: |
|---|
| 700 | iga = true; |
|---|
| 701 | |
|---|
| 702 | if (!p_ring_in.rsp_preempt) |
|---|
| 703 | p_ring_out.rsp_r = m_rsp_fifo.wok(); |
|---|
| 704 | else |
|---|
| 705 | p_ring_out.rsp_r = p_ring_in.rsp_r; |
|---|
| 706 | break; |
|---|
| 707 | |
|---|
| 708 | case NALLOC: |
|---|
| 709 | iga = false; |
|---|
| 710 | p_ring_out.rsp_r = p_ring_in.rsp_r; |
|---|
| 711 | break; |
|---|
| 712 | } // end switch |
|---|
| 713 | |
|---|
| 714 | |
|---|
| 715 | } // end update_ring_signals |
|---|
| 716 | |
|---|
| 717 | }; |
|---|
| 718 | |
|---|
| 719 | }} // end namespace |
|---|
| 720 | |
|---|
| 721 | #endif // DSPIN_HALF_GATEWAY_INITIATOR_FAST_H |
|---|
| 722 | |
|---|
