mirrors/yosys
3
0
Fork 0
mirror of https://github.com/YosysHQ/yosys synced 2025-06-06 14:13:23 +00:00
Code Activity

kernel/mem: Introduce transparency masks.

Browse source
This commit is contained in:
Marcelina Kościelnicka 2021-07-31 23:21:37 +02:00
parent 681a1c07e5
commit e6f3d1c225
8 changed files with 407 additions and 117 deletions
Download patch file Download diff file Expand all files Collapse all files

18
backends/verilog/verilog_backend.cc
View file

@ -555,7 +555,10 @@ void dump_memory(std::ostream &f, std::string indent, Mem &mem)
}
// Decide how to represent the transparency; same idea as Mem::extract_rdff.
bool trans_use_addr = port.transparent;
bool trans_use_addr = true;
for (auto bit : port.transparency_mask)
if (!bit)
trans_use_addr = false;
if (GetSize(mem.wr_ports) == 0)
trans_use_addr = false;
@ -630,13 +633,7 @@ void dump_memory(std::ostream &f, std::string indent, Mem &mem)
for (int i = 0; i < GetSize(mem.wr_ports); i++) {
auto &wport = mem.wr_ports[i];
if (!port.transparent)
continue;
if (!wport.clk_enable)
continue;
if (wport.clk != port.clk)
continue;
if (wport.clk_polarity != port.clk_polarity)
if (!port.transparency_mask[i] && !port.collision_x_mask[i])
continue;
int min_wide_log2 = std::min(port.wide_log2, wport.wide_log2);
int max_wide_log2 = std::max(port.wide_log2, wport.wide_log2);
@ -679,7 +676,10 @@ void dump_memory(std::ostream &f, std::string indent, Mem &mem)
if (epos-pos != GetSize(port.data))
os2 << stringf("[%d:%d]", rsub * mem.width + epos-1, rsub * mem.width + pos);
os2 << " <= ";
dump_sigspec(os2, wport.data.extract(wsub * mem.width + pos, epos-pos));
if (port.transparency_mask[i])
dump_sigspec(os2, wport.data.extract(wsub * mem.width + pos, epos-pos));
else
dump_sigspec(os2, Const(State::Sx, epos - pos));
os2 << ";\n";
clk_to_lof_body[clk_domain_str].push_back(os2.str());