[976] | 1 | /* -*- c++ -*- |
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| 2 | * File : dspin_local_crossbar.h |
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| 3 | * Copyright (c) UPMC, Lip6 |
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| 4 | * Author : Alain Greiner |
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| 5 | * |
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| 6 | * SOCLIB_LGPL_HEADER_BEGIN |
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[977] | 7 | * |
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[976] | 8 | * This file is part of SoCLib, GNU LGPLv2.1. |
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[977] | 9 | * |
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[976] | 10 | * SoCLib is free software; you can redistribute it and/or modify it |
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| 11 | * under the terms of the GNU Lesser General Public License as published |
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| 12 | * by the Free Software Foundation; version 2.1 of the License. |
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[977] | 13 | * |
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[976] | 14 | * SoCLib is distributed in the hope that it will be useful, but |
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| 15 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 17 | * Lesser General Public License for more details. |
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[977] | 18 | * |
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[976] | 19 | * You should have received a copy of the GNU Lesser General Public |
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| 20 | * License along with SoCLib; if not, write to the Free Software |
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| 21 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
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| 22 | * 02110-1301 USA |
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[977] | 23 | * |
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[976] | 24 | * SOCLIB_LGPL_HEADER_END |
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| 25 | * |
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| 26 | */ |
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| 27 | |
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| 28 | #ifndef DSPIN_LOCAL_CROSSBAR_H_ |
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| 29 | #define DSPIN_LOCAL_CROSSBAR_H_ |
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| 30 | |
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| 31 | #include <systemc> |
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| 32 | #include <cassert> |
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| 33 | #include "alloc_elems.h" |
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| 34 | #include "caba_base_module.h" |
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| 35 | #include "generic_fifo.h" |
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| 36 | #include "dspin_interface.h" |
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| 37 | #include "mapping_table.h" |
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| 38 | #include "address_decoding_table.h" |
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| 39 | |
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| 40 | namespace soclib { namespace caba { |
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| 41 | |
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| 42 | using namespace sc_core; |
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| 43 | using namespace soclib::common; |
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| 44 | |
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| 45 | template<size_t flit_width> |
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[977] | 46 | class DspinLocalCrossbar |
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| 47 | : public soclib::caba::BaseModule |
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| 48 | { |
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[976] | 49 | // Input Port FSM |
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[977] | 50 | enum |
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[976] | 51 | { |
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| 52 | INFSM_IDLE, |
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| 53 | INFSM_REQ, |
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| 54 | INFSM_ALLOC, |
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| 55 | INFSM_REQ_BC, |
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| 56 | INFSM_ALLOC_BC, |
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| 57 | }; |
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| 58 | |
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[977] | 59 | protected: |
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| 60 | SC_HAS_PROCESS(DspinLocalCrossbar); |
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[976] | 61 | |
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[977] | 62 | public: |
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[976] | 63 | |
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[977] | 64 | // ports |
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| 65 | sc_in<bool> p_clk; |
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| 66 | sc_in<bool> p_resetn; |
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| 67 | DspinInput<flit_width> p_global_in; |
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| 68 | DspinOutput<flit_width> p_global_out; |
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| 69 | DspinInput<flit_width>* p_local_in; |
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| 70 | DspinOutput<flit_width>* p_local_out; |
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[976] | 71 | |
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[1001] | 72 | sc_in<uint32_t> *p_barrier_enable; |
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| 73 | |
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[976] | 74 | void print_trace(); |
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| 75 | |
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[977] | 76 | // constructor / destructor |
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| 77 | DspinLocalCrossbar( sc_module_name name, |
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[976] | 78 | const MappingTable &mt, |
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| 79 | const size_t x, // cluster x coordinate |
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| 80 | const size_t y, // cluster y coordinate |
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| 81 | const size_t x_width, // x field width |
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[977] | 82 | const size_t y_width, // y field width |
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[976] | 83 | const size_t l_width, // local field width |
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| 84 | const size_t nb_local_inputs, |
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| 85 | const size_t nb_local_outputs, |
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| 86 | const size_t in_fifo_depth, |
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| 87 | const size_t out_fifo_depth, |
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| 88 | const bool is_cmd, |
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| 89 | const bool use_routing_table, |
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[1001] | 90 | const bool broadcast_supported, |
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| 91 | const bool hardware_barrier = false ); |
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[976] | 92 | |
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| 93 | ~DspinLocalCrossbar(); |
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| 94 | |
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[977] | 95 | private: |
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[976] | 96 | |
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| 97 | // define the FIFO flit |
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[977] | 98 | typedef struct internal_flit_s |
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[976] | 99 | { |
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| 100 | sc_uint<flit_width> data; |
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| 101 | bool eop; |
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| 102 | } internal_flit_t; |
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| 103 | |
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[977] | 104 | // internal registers |
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| 105 | sc_signal<bool> *r_alloc_out; // output port allocated |
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| 106 | sc_signal<size_t> *r_index_out; // owner input port index |
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[976] | 107 | internal_flit_t *r_buf_in; // input port fifo extension |
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| 108 | sc_signal<int> *r_fsm_in; // input port state |
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[977] | 109 | sc_signal<size_t> *r_index_in; // requested output port index |
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[976] | 110 | |
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[977] | 111 | // fifos |
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| 112 | soclib::caba::GenericFifo<internal_flit_t>* r_fifo_in; |
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| 113 | soclib::caba::GenericFifo<internal_flit_t>* r_fifo_out; |
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[976] | 114 | |
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[977] | 115 | // structural parameters |
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| 116 | const size_t m_local_x; |
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| 117 | const size_t m_local_y; |
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| 118 | const size_t m_x_width; |
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| 119 | const size_t m_x_shift; |
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| 120 | const size_t m_x_mask; |
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| 121 | const size_t m_y_width; |
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| 122 | const size_t m_y_shift; |
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| 123 | const size_t m_y_mask; |
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| 124 | const size_t m_l_width; |
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| 125 | const size_t m_l_shift; |
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| 126 | const size_t m_l_mask; |
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[976] | 127 | const size_t m_local_inputs; |
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| 128 | const size_t m_local_outputs; |
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| 129 | const size_t m_addr_width; |
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| 130 | const bool m_is_cmd; |
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| 131 | const bool m_use_routing_table; |
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| 132 | const bool m_broadcast_supported; |
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| 133 | |
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| 134 | // we define two routing tables, but only one is used |
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| 135 | AddressDecodingTable<uint64_t, size_t> m_cmd_rt; |
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| 136 | AddressDecodingTable<uint32_t, size_t> m_rsp_rt; |
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| 137 | |
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[977] | 138 | // methods |
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| 139 | void transition(); |
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| 140 | void genMoore(); |
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[976] | 141 | size_t route( sc_uint<flit_width> data, size_t index ); |
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| 142 | bool is_broadcast( sc_uint<flit_width> data ); |
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[977] | 143 | }; |
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[976] | 144 | |
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| 145 | }} // end namespace |
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[977] | 146 | |
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[976] | 147 | #endif // DSPIN_LOCAL_CROSSBAR_H_ |
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| 148 | |
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| 149 | // Local Variables: |
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| 150 | // tab-width: 4 |
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| 151 | // c-basic-offset: 4 |
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| 152 | // c-file-offsets:((innamespace . 0)(inline-open . 0)) |
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| 153 | // indent-tabs-mode: nil |
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| 154 | // End: |
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| 155 | |
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| 156 | // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=4:softtabstop=4 |
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