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snooping response handling

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This commit is contained in:
Blaise Tine
2020-05-11 22:55:44 -04:00
parent b6c4aa0baa
commit c49f01b769
36 changed files with 848 additions and 456 deletions
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18
hw/simulate/simulator.cpp
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@@ -160,21 +160,29 @@ void Simulator::flush_caches(uint32_t mem_addr, uint32_t size) {
// align address to LLC block boundaries
auto aligned_addr_start = mem_addr / GLOBAL_BLOCK_SIZE;
auto aligned_addr_end = (mem_addr + size + GLOBAL_BLOCK_SIZE - 1) / GLOBAL_BLOCK_SIZE;
int outstanding_snp_reqs = 0;
// submit snoop requests for the needed blocks
vortex_->snp_req_addr = aligned_addr_start;
vortex_->snp_req_addr = aligned_addr_start;
vortex_->snp_req_valid = true;
vortex_->snp_rsp_ready = true;
for (;;) {
this->step();
if (vortex_->snp_rsp_valid) {
--outstanding_snp_reqs;
}
if (vortex_->snp_req_valid && vortex_->snp_req_ready) {
++outstanding_snp_reqs;
vortex_->snp_req_addr += 1;
if (vortex_->snp_req_addr >= aligned_addr_end) {
vortex_->snp_req_valid = false;
break;
vortex_->snp_req_valid = false;
}
}
}
this->wait(PIPELINE_FLUSH_LATENCY);
if (!vortex_->snp_req_valid
&& 0 == outstanding_snp_reqs) {
break;
}
}
}
bool Simulator::run() {