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rocket-chip/csrc/vcs_main.rocketTestHarness.cc

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// See LICENSE for license details.
#include "htif_emulator.h"
#include "mm.h"
#include "mm_dramsim2.h"
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#include <DirectC.h>
#include <stdio.h>
#include <stdlib.h>
#include <vector>
#include <sstream>
#include <iterator>
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extern "C" {
extern int vcs_main(int argc, char** argv);
static htif_emulator_t* htif;
static unsigned htif_bytes = HTIF_WIDTH / 8;
static mm_t* mm[N_MEM_CHANNELS];
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static const char* loadmem;
static bool dramsim = false;
static int memory_channel_mux_select = 0;
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void htif_fini(vc_handle failure)
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{
delete htif;
htif = NULL;
exit(vc_getScalar(failure));
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}
int main(int argc, char** argv)
{
for (int i = 1; i < argc; i++)
{
if (!strcmp(argv[i], "+dramsim"))
dramsim = true;
else if (!strncmp(argv[i], "+loadmem=", 9))
loadmem = argv[i]+9;
else if (!strncmp(argv[i], "+memory_channel_mux_select=", 27))
memory_channel_mux_select = atoi(argv[i]+27);
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}
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htif = new htif_emulator_t(std::vector<std::string>(argv + 1, argv + argc));
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for (int i=0; i<N_MEM_CHANNELS; i++) {
mm[i] = dramsim ? (mm_t*)(new mm_dramsim2_t) : (mm_t*)(new mm_magic_t);
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mm[i]->init(MEM_SIZE / N_MEM_CHANNELS, MEM_DATA_BITS / 8, CACHE_BLOCK_BYTES);
}
if (loadmem) {
void *mems[N_MEM_CHANNELS];
for (int i = 0; i < N_MEM_CHANNELS; i++)
mems[i] = mm[i]->get_data();
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load_mem(mems, loadmem, CACHE_BLOCK_BYTES, N_MEM_CHANNELS);
}
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vcs_main(argc, argv);
abort(); // should never get here
}
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void memory_tick(
vc_handle channel,
vc_handle ar_valid,
vc_handle ar_ready,
vc_handle ar_addr,
vc_handle ar_id,
vc_handle ar_size,
vc_handle ar_len,
vc_handle aw_valid,
vc_handle aw_ready,
vc_handle aw_addr,
vc_handle aw_id,
vc_handle aw_size,
vc_handle aw_len,
vc_handle w_valid,
vc_handle w_ready,
vc_handle w_strb,
vc_handle w_data,
vc_handle w_last,
vc_handle r_valid,
vc_handle r_ready,
vc_handle r_resp,
vc_handle r_id,
vc_handle r_data,
vc_handle r_last,
vc_handle b_valid,
vc_handle b_ready,
vc_handle b_resp,
vc_handle b_id)
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{
int c = vc_4stVectorRef(channel)->d;
assert(c < N_MEM_CHANNELS);
mm_t* mmc = mm[c];
uint32_t write_data[mmc->get_word_size()/sizeof(uint32_t)];
for (size_t i = 0; i < mmc->get_word_size()/sizeof(uint32_t); i++)
write_data[i] = vc_4stVectorRef(w_data)[i].d;
uint32_t aw_id_val, ar_id_val;
if (MEM_ID_BITS == 1) {
aw_id_val = vc_getScalar(aw_id);
ar_id_val = vc_getScalar(ar_id);
} else {
aw_id_val = vc_4stVectorRef(aw_id)->d;
ar_id_val = vc_4stVectorRef(ar_id)->d;
}
mmc->tick
(
vc_getScalar(ar_valid),
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vc_4stVectorRef(ar_addr)->d - MEM_BASE,
ar_id_val,
vc_4stVectorRef(ar_size)->d,
vc_4stVectorRef(ar_len)->d,
vc_getScalar(aw_valid),
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vc_4stVectorRef(aw_addr)->d - MEM_BASE,
aw_id_val,
vc_4stVectorRef(aw_size)->d,
vc_4stVectorRef(aw_len)->d,
vc_getScalar(w_valid),
vc_4stVectorRef(w_strb)->d,
write_data,
vc_getScalar(w_last),
vc_getScalar(r_ready),
vc_getScalar(b_ready)
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);
vc_putScalar(ar_ready, mmc->ar_ready());
vc_putScalar(aw_ready, mmc->aw_ready());
vc_putScalar(w_ready, mmc->w_ready());
vc_putScalar(b_valid, mmc->b_valid());
vc_putScalar(r_valid, mmc->r_valid());
vc_putScalar(r_last, mmc->r_last());
vec32 d[mmc->get_word_size()/sizeof(uint32_t)];
d[0].c = 0;
d[0].d = mmc->b_resp();
vc_put4stVector(b_resp, d);
d[0].c = 0;
d[0].d = mmc->r_resp();
vc_put4stVector(r_resp, d);
if (MEM_ID_BITS > 1) {
d[0].c = 0;
d[0].d = mmc->b_id();
vc_put4stVector(b_id, d);
d[0].c = 0;
d[0].d = mmc->r_id();
vc_put4stVector(r_id, d);
} else {
vc_putScalar(b_id, mmc->b_id());
vc_putScalar(r_id, mmc->r_id());
}
for (size_t i = 0; i < mmc->get_word_size()/sizeof(uint32_t); i++)
{
d[i].c = 0;
d[i].d = ((uint32_t*)mmc->r_data())[i];
}
vc_put4stVector(r_data, d);
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}
void htif_tick
(
vc_handle htif_in_valid,
vc_handle htif_in_ready,
vc_handle htif_in_bits,
vc_handle htif_out_valid,
vc_handle htif_out_ready,
vc_handle htif_out_bits,
vc_handle exit
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)
{
static bool peek_in_valid;
static uint32_t peek_in_bits;
if (vc_getScalar(htif_in_ready))
peek_in_valid = htif->recv_nonblocking(&peek_in_bits, htif_bytes);
vc_putScalar(htif_out_ready, 1);
if (vc_getScalar(htif_out_valid))
{
vec32* bits = vc_4stVectorRef(htif_out_bits);
htif->send(&bits->d, htif_bytes);
}
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vec32 bits = {0, 0};
bits.d = peek_in_bits;
vc_put4stVector(htif_in_bits, &bits);
vc_putScalar(htif_in_valid, peek_in_valid);
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bits.d = htif->done() ? (htif->exit_code() << 1 | 1) : 0;
vc_put4stVector(exit, &bits);
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}
}