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Diffstat (limited to 'src/systemc/tests/systemc/misc/stars/star111004/star111004.cpp')
| -rw-r--r-- | src/systemc/tests/systemc/misc/stars/star111004/star111004.cpp | 269 |
1 files changed, 269 insertions, 0 deletions
diff --git a/src/systemc/tests/systemc/misc/stars/star111004/star111004.cpp b/src/systemc/tests/systemc/misc/stars/star111004/star111004.cpp new file mode 100644 index 000000000..152c050d3 --- /dev/null +++ b/src/systemc/tests/systemc/misc/stars/star111004/star111004.cpp @@ -0,0 +1,269 @@ +/***************************************************************************** + + Licensed to Accellera Systems Initiative Inc. (Accellera) under one or + more contributor license agreements. See the NOTICE file distributed + with this work for additional information regarding copyright ownership. + Accellera licenses this file to you under the Apache License, Version 2.0 + (the "License"); you may not use this file except in compliance with the + License. You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or + implied. See the License for the specific language governing + permissions and limitations under the License. + + *****************************************************************************/ + +/***************************************************************************** + + star111004.cpp -- + + Original Author: Martin Janssen, Synopsys, Inc., 2002-02-15 + + *****************************************************************************/ + +/***************************************************************************** + + MODIFICATION LOG - modifiers, enter your name, affiliation, date and + changes you are making here. + + Name, Affiliation, Date: + Description of Modification: + + *****************************************************************************/ + +/*############################################################################ +# Siemens AG copyright 2000 +# All Rights Reserved +# +# File name : io_controller.cpp +# +# Title : I/O-Controller +# +# Purpose : functionality for I/O-Controller-module +# +# Author : Hannes Muhr +# PSE EZE MSA +# +############################################################################## +# Modification History : +# +# +##############################################################################*/ + +#include "systemc.h" +#include "io_controller.h" + +#define MII_FRAME_SIZE 400 + +// ::semaphore(){ + +// value = false; +// } + +void io_controller_m::P(){ + + while (value) wait(); + value = true; +} + +void io_controller_m::V(){ + + /*if (!value) { + cerr << "V-operation on semaphore that is not P'd\n"; + exit(-1); + }*/ + value = false; +} + +bool io_controller_m::get_value(){ + + return value; +} + +/*void sc_trace(sc_trace_file *tf, const semaphore& sem, const std::string& str){ + + sc_trace(tf, sem.get_value(), str); +}*/ + +sc_uint<32> io_controller_m::read_from_memory(sc_uint<32> mp){ + + // read from mbdatm-memory over i486-IF + + addr30_o = mp >> 2; + ads_n_o = 0; + wr_n_o = 0; + wait(); + ads_n_o = 1; + do { wait(); } while (rdy_n_i == 1); + sc_uint<32> data = data32_i.read(); + wr_n_o = 1; + addr30_o = 0; + return data; +} + +void io_controller_m::write_into_memory(sc_uint<32> mp, sc_uint<32> data){ + + addr30_o = mp >> 2; + ads_n_o = 0; + wr_n_o = 1; + wait(); + ads_n_o = 1; + data32_o = data; + do { wait(); } while (rdy_n_i == 1); + wr_n_o = 1; + addr30_o = 0; + data32_o = 0; +} + +void io_controller_m::control_write(){ + sc_uint<32> word_cnt; + + if (!res_n_i.read()){ + do { wait(); } while (!res_n_i); + + // initialize + + // wait for 1. AR (HWS-Daten) + do { wait(); } while (!ar_i); + sc_uint<32> hws = data32_i.read(); + + wait(); + + // wait for 2. AR (ACB-Pointer) + do { wait(); } while (!ar_i); + addr_tx_frame_ptr = data32_i.read(); + + } + /* else if (mii_coll_det){ + out_fifo_reset = 1; + out_fifo_en = 0; + out_fifo_data32 = (sc_uint<32>) 0; + + // reset i486-IF + addr30_o = 0; + data32_io = 0; + ads_n_o = 1; + wr_n_o = 1; + + // release Semaphore if it is set + sem.V(); + + wait(); + out_fifo_reset = 0; + }*/ + + while(true){ + // normally Attention Request - Signal from MBDATM + // would wake up IO-Controller to read data from the memory, + // but the model from Hr. Wahl said: wait for some ms !!! + + // wait(unsigned ((SCAN_INTERVAL NS)/40e-9)); + //do { wait(); } while (ar_i); + + #ifdef LOGGING + flog << sc_time_stamp()<<": "<<name()<<"::control_write - Attention Request" << endl; + #endif + + P(); + sc_uint<32> tx_frame_ptr = read_from_memory(addr_tx_frame_ptr); + if (tx_frame_ptr != 0) + word_cnt = read_from_memory(tx_frame_ptr+(MII_FIFO_SIZE+1)*4); + V(); + + // check, if frame available and frame is full (word_cnt == MII_FRAME_SIZE) + + while (tx_frame_ptr != 0 && word_cnt == MII_FRAME_SIZE){ + #ifdef LOGGING + flog << sc_time_stamp()<<": "<<name()<<"::control_write - writing mii_frame into out_fifo" << endl; + #endif + + + for (int i = 0; i<MII_FIFO_SIZE; i++){ + // reading from i486-IF and writing into + // out_fifo is mixed, so read_from_memory could not be applied + + P(); + sc_uint<32> data = read_from_memory(tx_frame_ptr+i*4); + V(); + + out_fifo_en = 1; + out_fifo_data32 = data; + wait(); + out_fifo_en = 0; + + } + + while (out_fifo_act.read() != 0) wait(2); + + // write 0xFFFFFFFF (>MII_FRAME_SIZE) into tx_frame_ptr + // to signal software in mbdatm that io-controller has + // read out the frames and sent successfully + P(); + write_into_memory(tx_frame_ptr+(MII_FIFO_SIZE+1)*4, 0xFFFFFFFF); + V(); + + // read next frame_pointer and word_cnt from MBDATM + P(); + tx_frame_ptr = read_from_memory(tx_frame_ptr+MII_FIFO_SIZE*4); + if (tx_frame_ptr != 0) + word_cnt = read_from_memory(tx_frame_ptr+(MII_FIFO_SIZE+1)*4); + V(); + + + } + + } +} + +void io_controller_m::control_read(){ + + int arr_ptr = 0; + + while (true){ + do { wait(); } while (!control_en); + #ifdef LOGGING + flog << sc_time_stamp()<<": "<<name()<<"::control_read " << endl; + #endif + + // read rx_frame_ptr from MBDATM + P(); + sc_uint<32> rx_frame_ptr = read_from_memory(rx_ptr_array+arr_ptr*4); + V(); + /*if (rx_frame_ptr == 0){ + cerr << "\nIO-Controller has read NULL-ptr from rx_array in MBDATM\n"; + cerr << "MBDATM did not fill rx_array fast enough\n"; + exit(-1); + }*/ + if (++arr_ptr == MII_FIFO_SIZE) + arr_ptr = 0; + + // write data from in_fifo into MBDATM-memory + for (int i = 0; i < MII_FIFO_SIZE-1; i++){ + sc_uint<32> d = control_data32.read(); + // grab the semaphore + P(); + write_into_memory(rx_frame_ptr + i*4, d); + // release semaphore + V(); + do { wait(); } while (!control_en); + + } + // separate last loop because we don't want to wait for + // another control_en at this time + sc_uint<32> d = control_data32.read(); + P(); + write_into_memory(rx_frame_ptr + (MII_FIFO_SIZE-1)*4, d); + V(); + + // write 0xFFFFFFFF into word_cnt from frame + // to indicate the software (MBDATM) that frame has been filled + P(); + write_into_memory(rx_frame_ptr + (MII_FIFO_SIZE+1)*4, 0xFFFFFFFF); + V(); + } +} + |