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[/] [openrisc/] [trunk/] [orpsocv2/] [bench/] [sysc/] [src/] [OrpsocAccess.cpp] - Rev 163
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// ---------------------------------------------------------------------------- // Access functions for the ORPSoC Verilator model: implementation // Copyright (C) 2008 Embecosm Limited <info@embecosm.com> // Contributor Jeremy Bennett <jeremy.bennett@embecosm.com> // Contributor Julius Baxter <jb@orsoc.se> // This file is part of the cycle accurate model of the OpenRISC 1000 based // system-on-chip, ORPSoC, built using Verilator. // This program is free software: you can redistribute it and/or modify it // under the terms of the GNU Lesser General Public License as published by // the Free Software Foundation, either version 3 of the License, or (at your // option) any later version. // This program is distributed in the hope that it will be useful, but WITHOUT // ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or // FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public // License for more details. // You should have received a copy of the GNU Lesser General Public License // along with this program. If not, see <http://www.gnu.org/licenses/>. // ---------------------------------------------------------------------------- // $Id: OrpsocAccess.cpp 303 2009-02-16 11:20:17Z jeremy $ #include "OrpsocAccess.h" #include "Vorpsoc_top.h" #include "Vorpsoc_top_orpsoc_top.h" #include "Vorpsoc_top_or1k_top.h" #include "Vorpsoc_top_or1200_top.h" #include "Vorpsoc_top_or1200_cpu.h" #include "Vorpsoc_top_or1200_ctrl.h" #include "Vorpsoc_top_or1200_except.h" #include "Vorpsoc_top_or1200_sprs.h" #include "Vorpsoc_top_or1200_rf.h" #include "Vorpsoc_top_or1200_dpram.h" //#include "Vorpsoc_top_ram_wb.h" //#include "Vorpsoc_top_ram_wb_sc_sw.h" #include "Vorpsoc_top_ram_wb__D20_A19_M800000.h" #include "Vorpsoc_top_ram_wb_sc_sw__D20_A19_M800000.h" #include "Vorpsoc_top_wb_conbus_top__pi1.h" //! Constructor for the ORPSoC access class //! Initializes the pointers to the various module instances of interest //! within the Verilator model. //! @param[in] orpsoc The SystemC Verilated ORPSoC instance OrpsocAccess::OrpsocAccess (Vorpsoc_top *orpsoc_top) { // Assign processor accessor objects or1200_ctrl = orpsoc_top->v->i_or1k->i_or1200_top->or1200_cpu->or1200_ctrl; or1200_except = orpsoc_top->v->i_or1k->i_or1200_top->or1200_cpu->or1200_except; or1200_sprs = orpsoc_top->v->i_or1k->i_or1200_top->or1200_cpu->or1200_sprs; rf_a = orpsoc_top->v->i_or1k->i_or1200_top->or1200_cpu->or1200_rf->rf_a; // Assign main memory accessor objects ram_wb_sc_sw = orpsoc_top->v->ram_wb0->ram0; // Assign arbiter accessor object wb_arbiter = orpsoc_top->v->wb_conbus; } // OrpsocAccess () //! Access for the ex_freeze signal //! @return The value of the or1200_ctrl.ex_freeze signal bool OrpsocAccess::getExFreeze () { return or1200_ctrl->ex_freeze; } // getExFreeze () //! Access for the wb_freeze signal //! @return The value of the or1200_ctrl.wb_freeze signal bool OrpsocAccess::getWbFreeze () { return or1200_ctrl->wb_freeze; } // getWbFreeze () //! Access for the except_flushpipe signal //! @return The value of the or1200_except.except_flushpipe signal bool OrpsocAccess::getExceptFlushpipe () { return or1200_except->except_flushpipe; } // getExceptFlushpipe () //! Access for the ex_dslot signal //! @return The value of the or1200_except.ex_dslot signalfac bool OrpsocAccess::getExDslot () { return or1200_except->ex_dslot; } // getExDslot () //! Access for the except_type value //! @return The value of the or1200_except.except_type register uint32_t OrpsocAccess::getExceptType () { return (or1200_except->get_except_type) (); } // getExceptType () //! Access for the id_pc register //! @return The value of the or1200_except.id_pc register uint32_t OrpsocAccess::getIdPC () { return (or1200_except->get_id_pc) (); } // getIdPC () //! Access for the ex_pc register //! @return The value of the or1200_except.id_ex register uint32_t OrpsocAccess::getExPC () { return (or1200_except->get_ex_pc) (); } // getExPC () //! Access for the wb_pc register //! @return The value of the or1200_except.wb_pc register uint32_t OrpsocAccess::getWbPC () { return (or1200_except->get_wb_pc) (); } // getWbPC () //! Access for the id_insn register //! @return The value of the or1200_ctrl.wb_insn register uint32_t OrpsocAccess::getIdInsn () { return (or1200_ctrl->get_id_insn) (); } // getIdInsn () //! Access for the ex_insn register //! @return The value of the or1200_ctrl.ex_insn register uint32_t OrpsocAccess::getExInsn () { return (or1200_ctrl->get_ex_insn) (); } // getExInsn () //! Access for the wb_insn register //! @return The value of the or1200_ctrl.wb_insn register uint32_t OrpsocAccess::getWbInsn () { return (or1200_ctrl->get_wb_insn) (); } // getWbInsn () //! Access the Wishbone SRAM memory //! @return The value of the 32-bit memory word at addr uint32_t OrpsocAccess::get_mem32 (uint32_t addr) { return (ram_wb_sc_sw->get_mem) (addr/4); } // get_mem32 () //! Access a byte from the Wishbone SRAM memory //! @return The value of the memory byte at addr uint8_t OrpsocAccess::get_mem8 (uint32_t addr) { uint32_t word; static uint32_t cached_word; static uint32_t cached_word_addr = 0xffffffff; int sel = addr & 0x3; // Remember which byte we want addr = addr / 4; if (addr != cached_word_addr) { cached_word_addr = addr; // Convert address to word number here word = (ram_wb_sc_sw->get_mem) (addr); cached_word = word; } else word = cached_word; switch(sel) { /* Big endian word expected */ case 0: return ((word >> 24) & 0xff); break; case 1: return ((word >> 16) & 0xff); break; case 2: return ((word >> 8) & 0xff); break; case 3: return ((word >> 0) & 0xff); break; default: return 0; } } // get_mem8 () //! Write value to the Wishbone SRAM memory void OrpsocAccess::set_mem32 (uint32_t addr, uint32_t data) { (ram_wb_sc_sw->set_mem) (addr/4, data); } // set_mem32 () //! Trigger the $readmemh() system call void OrpsocAccess::do_ram_readmemh (void) { (ram_wb_sc_sw->do_readmemh) (); } // do_ram_readmemh () //! Access for the OR1200 GPRs //! These are extracted from memory using the Verilog function //! @param[in] regNum The GPR whose value is wanted //! @return The value of the GPR uint32_t OrpsocAccess::getGpr (uint32_t regNum) { return (rf_a->get_gpr) (regNum); } // getGpr () //! Access for the sr register //! @return The value of the or1200_sprs.sr register uint32_t OrpsocAccess::getSprSr () { return (or1200_sprs->get_sr) (); } // getSprSr () //! Access for the epcr register //! @return The value of the or1200_sprs.epcr register uint32_t OrpsocAccess::getSprEpcr () { return (or1200_sprs->get_epcr) (); } // getSprEpcr () //! Access for the eear register //! @return The value of the or1200_sprs.eear register uint32_t OrpsocAccess::getSprEear () { return (or1200_sprs->get_eear) (); } // getSprEear () //! Access for the esr register //! @return The value of the or1200_sprs.esr register uint32_t OrpsocAccess::getSprEsr () { return (or1200_sprs->get_esr) (); } // getSprEsr () //! Access for the arbiter's grant signal //! @return The value of the wb_conmax_top.arb signal uint8_t OrpsocAccess::getWbArbGrant () { return (wb_arbiter->get_gnt) (); } // getWbArbGrant () //! Arbiter master[mast_num] access functions //! Access for the arbiter's master[mast_num] data in signal //! @return The value of the wb_conmax_top.m_dat_i[mast_num] uint32_t OrpsocAccess::getWbArbMastDatI (uint32_t mast_num) { return (wb_arbiter->get_m_dat_i) (mast_num); } // getWbArbMastDatI () //! Access for the arbiter's master[mast_num] data out signal //! @return The value of the wb_conmax_top.m_dat_o[mast_num] uint32_t OrpsocAccess::getWbArbMastDatO (uint32_t mast_num) { return (wb_arbiter->get_m_dat_o) (mast_num); } // getWbArbMastDatO () //! Access for the arbiter's master[mast_num] data out //! @return The value of the wb_conmax_top.m_adr_i[mast_num] uint32_t OrpsocAccess::getWbArbMastAdrI (uint32_t mast_num) { return (wb_arbiter->get_m_adr_i) (mast_num); } // getWbArbMastAdrI () //! Access for the arbiter's master[mast_num] select signal //! @return The value of the wb_conmax_top.m_sel_i[mast_num] uint8_t OrpsocAccess::getWbArbMastSelI (uint32_t mast_num) { return (wb_arbiter->get_m_sel_i) (mast_num); } // getWbArbMastSelI () //! Access for the arbiter's master[mast_num] decoded slave select signal //! @return The value of the wb_conmax_top.m_ssel_dec[mast_num] uint8_t OrpsocAccess::getWbArbMastSlaveSelDecoded (uint32_t mast_num) { return (wb_arbiter->get_m_ssel_dec) (mast_num); } // getWbArbMastSlaveSelDecoded () //! Access for the arbiter's master[mast_num] write enable signal //! @return The value of the wb_conmax_top.m_we_i[mast_num] bool OrpsocAccess::getWbArbMastWeI (uint32_t mast_num) { return (wb_arbiter->get_m_we_i) (mast_num); } // getWbArbMastWeI () //! Access for the arbiter's master[mast_num] cycle input signal //! @return The value of the wb_conmax_top.m_cyc_i[mast_num] bool OrpsocAccess::getWbArbMastCycI (uint32_t mast_num) { return (wb_arbiter->get_m_cyc_i) (mast_num); } // getWbArbMastCycI () //! Access for the arbiter's master[mast_num] strobe input signal //! @return The value of the wb_conmax_top.m_stb_i[mast_num] bool OrpsocAccess::getWbArbMastStbI (uint32_t mast_num) { return (wb_arbiter->get_m_stb_i) (mast_num); } // getWbArbMastStbI () //! Access for the arbiter's master[mast_num] ACK output signal //! @return The value of the wb_conmax_top.m_ack_o[mast_num] bool OrpsocAccess::getWbArbMastAckO (uint32_t mast_num) { return (wb_arbiter->get_m_ack_o) (mast_num); } // getWbArbMastAckO () //! Access for the arbiter's master[mast_num] error input signal //! @return The value of the wb_conmax_top.m_err_o[mast_num] bool OrpsocAccess::getWbArbMastErrO (uint32_t mast_num) { return (wb_arbiter->get_m_err_o) (mast_num); } // getWbArbMastErrO ()
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