mirror of https://github.com/YosysHQ/yosys.git
266 lines
8.8 KiB
C++
266 lines
8.8 KiB
C++
/*
|
|
* yosys -- Yosys Open SYnthesis Suite
|
|
*
|
|
* Copyright (C) 2012 Clifford Wolf <clifford@clifford.at>
|
|
*
|
|
* Permission to use, copy, modify, and/or distribute this software for any
|
|
* purpose with or without fee is hereby granted, provided that the above
|
|
* copyright notice and this permission notice appear in all copies.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
|
|
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
|
|
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
|
|
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
|
|
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
|
|
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
|
|
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
|
|
*
|
|
*/
|
|
|
|
#include "kernel/yosys.h"
|
|
#include "kernel/sigtools.h"
|
|
|
|
USING_YOSYS_NAMESPACE
|
|
PRIVATE_NAMESPACE_BEGIN
|
|
|
|
bool memcells_cmp(Cell *a, Cell *b)
|
|
{
|
|
if (a->type == "$memrd" && b->type == "$memrd")
|
|
return a->name < b->name;
|
|
if (a->type == "$memrd" || b->type == "$memrd")
|
|
return (a->type == "$memrd") < (b->type == "$memrd");
|
|
return a->parameters.at("\\PRIORITY").as_int() < b->parameters.at("\\PRIORITY").as_int();
|
|
}
|
|
|
|
Cell *handle_memory(Module *module, RTLIL::Memory *memory)
|
|
{
|
|
log("Collecting $memrd, $memwr and $meminit for memory `%s' in module `%s':\n",
|
|
memory->name.c_str(), module->name.c_str());
|
|
|
|
Const init_data(State::Sx, memory->size * memory->width);
|
|
SigMap sigmap(module);
|
|
|
|
int wr_ports = 0;
|
|
SigSpec sig_wr_clk;
|
|
SigSpec sig_wr_clk_enable;
|
|
SigSpec sig_wr_clk_polarity;
|
|
SigSpec sig_wr_addr;
|
|
SigSpec sig_wr_data;
|
|
SigSpec sig_wr_en;
|
|
|
|
int rd_ports = 0;
|
|
SigSpec sig_rd_clk;
|
|
SigSpec sig_rd_clk_enable;
|
|
SigSpec sig_rd_clk_polarity;
|
|
SigSpec sig_rd_transparent;
|
|
SigSpec sig_rd_addr;
|
|
SigSpec sig_rd_data;
|
|
SigSpec sig_rd_en;
|
|
|
|
int addr_bits = 0;
|
|
std::vector<Cell*> memcells;
|
|
|
|
for (auto &cell_it : module->cells_) {
|
|
Cell *cell = cell_it.second;
|
|
if (cell->type.in("$memrd", "$memwr", "$meminit") && memory->name == cell->parameters["\\MEMID"].decode_string()) {
|
|
SigSpec addr = sigmap(cell->getPort("\\ADDR"));
|
|
for (int i = 0; i < GetSize(addr); i++)
|
|
if (addr[i] != State::S0)
|
|
addr_bits = std::max(addr_bits, i+1);
|
|
memcells.push_back(cell);
|
|
}
|
|
}
|
|
|
|
if (memory->start_offset == 0 && addr_bits < 30 && (1 << addr_bits) < memory->size)
|
|
memory->size = 1 << addr_bits;
|
|
|
|
if (memory->start_offset >= 0)
|
|
addr_bits = std::min(addr_bits, ceil_log2(memory->size + memory->start_offset));
|
|
|
|
addr_bits = std::max(addr_bits, 1);
|
|
|
|
if (memcells.empty()) {
|
|
log(" no cells found. removing memory.\n");
|
|
return nullptr;
|
|
}
|
|
|
|
std::sort(memcells.begin(), memcells.end(), memcells_cmp);
|
|
|
|
for (auto cell : memcells)
|
|
{
|
|
log(" %s (%s)\n", log_id(cell), log_id(cell->type));
|
|
|
|
if (cell->type == "$meminit")
|
|
{
|
|
SigSpec addr = sigmap(cell->getPort("\\ADDR"));
|
|
SigSpec data = sigmap(cell->getPort("\\DATA"));
|
|
|
|
if (!addr.is_fully_const())
|
|
log_error("Non-constant address %s in memory initialization %s.\n", log_signal(addr), log_id(cell));
|
|
if (!data.is_fully_const())
|
|
log_error("Non-constant data %s in memory initialization %s.\n", log_signal(data), log_id(cell));
|
|
|
|
int offset = (addr.as_int() - memory->start_offset) * memory->width;
|
|
|
|
if (offset < 0 || offset + GetSize(data) > GetSize(init_data))
|
|
log_warning("Address %s in memory initialization %s is out-of-bounds.\n", log_signal(addr), log_id(cell));
|
|
|
|
for (int i = 0; i < GetSize(data); i++)
|
|
if (0 <= i+offset && i+offset < GetSize(init_data))
|
|
init_data.bits[i+offset] = data[i].data;
|
|
|
|
continue;
|
|
}
|
|
|
|
if (cell->type == "$memwr")
|
|
{
|
|
SigSpec clk = sigmap(cell->getPort("\\CLK"));
|
|
SigSpec clk_enable = SigSpec(cell->parameters["\\CLK_ENABLE"]);
|
|
SigSpec clk_polarity = SigSpec(cell->parameters["\\CLK_POLARITY"]);
|
|
SigSpec addr = sigmap(cell->getPort("\\ADDR"));
|
|
SigSpec data = sigmap(cell->getPort("\\DATA"));
|
|
SigSpec en = sigmap(cell->getPort("\\EN"));
|
|
|
|
if (!en.is_fully_zero())
|
|
{
|
|
clk.extend_u0(1, false);
|
|
clk_enable.extend_u0(1, false);
|
|
clk_polarity.extend_u0(1, false);
|
|
addr.extend_u0(addr_bits, false);
|
|
data.extend_u0(memory->width, false);
|
|
en.extend_u0(memory->width, false);
|
|
|
|
sig_wr_clk.append(clk);
|
|
sig_wr_clk_enable.append(clk_enable);
|
|
sig_wr_clk_polarity.append(clk_polarity);
|
|
sig_wr_addr.append(addr);
|
|
sig_wr_data.append(data);
|
|
sig_wr_en.append(en);
|
|
|
|
wr_ports++;
|
|
}
|
|
continue;
|
|
}
|
|
|
|
if (cell->type == "$memrd")
|
|
{
|
|
SigSpec clk = sigmap(cell->getPort("\\CLK"));
|
|
SigSpec clk_enable = SigSpec(cell->parameters["\\CLK_ENABLE"]);
|
|
SigSpec clk_polarity = SigSpec(cell->parameters["\\CLK_POLARITY"]);
|
|
SigSpec transparent = SigSpec(cell->parameters["\\TRANSPARENT"]);
|
|
SigSpec addr = sigmap(cell->getPort("\\ADDR"));
|
|
SigSpec data = sigmap(cell->getPort("\\DATA"));
|
|
SigSpec en = sigmap(cell->getPort("\\EN"));
|
|
|
|
if (!en.is_fully_zero())
|
|
{
|
|
clk.extend_u0(1, false);
|
|
clk_enable.extend_u0(1, false);
|
|
clk_polarity.extend_u0(1, false);
|
|
transparent.extend_u0(1, false);
|
|
addr.extend_u0(addr_bits, false);
|
|
data.extend_u0(memory->width, false);
|
|
|
|
sig_rd_clk.append(clk);
|
|
sig_rd_clk_enable.append(clk_enable);
|
|
sig_rd_clk_polarity.append(clk_polarity);
|
|
sig_rd_transparent.append(transparent);
|
|
sig_rd_addr.append(addr);
|
|
sig_rd_data.append(data);
|
|
sig_rd_en.append(en);
|
|
|
|
rd_ports++;
|
|
}
|
|
continue;
|
|
}
|
|
}
|
|
|
|
std::stringstream sstr;
|
|
sstr << "$mem$" << memory->name.str() << "$" << (autoidx++);
|
|
|
|
Cell *mem = module->addCell(sstr.str(), "$mem");
|
|
mem->parameters["\\MEMID"] = Const(memory->name.str());
|
|
mem->parameters["\\WIDTH"] = Const(memory->width);
|
|
mem->parameters["\\OFFSET"] = Const(memory->start_offset);
|
|
mem->parameters["\\SIZE"] = Const(memory->size);
|
|
mem->parameters["\\ABITS"] = Const(addr_bits);
|
|
mem->parameters["\\INIT"] = init_data;
|
|
|
|
log_assert(sig_wr_clk.size() == wr_ports);
|
|
log_assert(sig_wr_clk_enable.size() == wr_ports && sig_wr_clk_enable.is_fully_const());
|
|
log_assert(sig_wr_clk_polarity.size() == wr_ports && sig_wr_clk_polarity.is_fully_const());
|
|
log_assert(sig_wr_addr.size() == wr_ports * addr_bits);
|
|
log_assert(sig_wr_data.size() == wr_ports * memory->width);
|
|
log_assert(sig_wr_en.size() == wr_ports * memory->width);
|
|
|
|
mem->parameters["\\WR_PORTS"] = Const(wr_ports);
|
|
mem->parameters["\\WR_CLK_ENABLE"] = wr_ports ? sig_wr_clk_enable.as_const() : State::S0;
|
|
mem->parameters["\\WR_CLK_POLARITY"] = wr_ports ? sig_wr_clk_polarity.as_const() : State::S0;
|
|
|
|
mem->setPort("\\WR_CLK", sig_wr_clk);
|
|
mem->setPort("\\WR_ADDR", sig_wr_addr);
|
|
mem->setPort("\\WR_DATA", sig_wr_data);
|
|
mem->setPort("\\WR_EN", sig_wr_en);
|
|
|
|
log_assert(sig_rd_clk.size() == rd_ports);
|
|
log_assert(sig_rd_clk_enable.size() == rd_ports && sig_rd_clk_enable.is_fully_const());
|
|
log_assert(sig_rd_clk_polarity.size() == rd_ports && sig_rd_clk_polarity.is_fully_const());
|
|
log_assert(sig_rd_addr.size() == rd_ports * addr_bits);
|
|
log_assert(sig_rd_data.size() == rd_ports * memory->width);
|
|
|
|
mem->parameters["\\RD_PORTS"] = Const(rd_ports);
|
|
mem->parameters["\\RD_CLK_ENABLE"] = rd_ports ? sig_rd_clk_enable.as_const() : State::S0;
|
|
mem->parameters["\\RD_CLK_POLARITY"] = rd_ports ? sig_rd_clk_polarity.as_const() : State::S0;
|
|
mem->parameters["\\RD_TRANSPARENT"] = rd_ports ? sig_rd_transparent.as_const() : State::S0;
|
|
|
|
mem->setPort("\\RD_CLK", sig_rd_clk);
|
|
mem->setPort("\\RD_ADDR", sig_rd_addr);
|
|
mem->setPort("\\RD_DATA", sig_rd_data);
|
|
mem->setPort("\\RD_EN", sig_rd_en);
|
|
|
|
for (auto c : memcells)
|
|
module->remove(c);
|
|
|
|
return mem;
|
|
}
|
|
|
|
static void handle_module(Design *design, Module *module)
|
|
{
|
|
std::vector<pair<Cell*, IdString>> finqueue;
|
|
|
|
for (auto &mem_it : module->memories)
|
|
if (design->selected(module, mem_it.second)) {
|
|
Cell *c = handle_memory(module, mem_it.second);
|
|
finqueue.push_back(pair<Cell*, IdString>(c, mem_it.first));
|
|
}
|
|
for (auto &it : finqueue) {
|
|
delete module->memories.at(it.second);
|
|
module->memories.erase(it.second);
|
|
if (it.first)
|
|
module->rename(it.first, it.second);
|
|
}
|
|
}
|
|
|
|
struct MemoryCollectPass : public Pass {
|
|
MemoryCollectPass() : Pass("memory_collect", "creating multi-port memory cells") { }
|
|
void help() YS_OVERRIDE
|
|
{
|
|
// |---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|---v---|
|
|
log("\n");
|
|
log(" memory_collect [selection]\n");
|
|
log("\n");
|
|
log("This pass collects memories and memory ports and creates generic multiport\n");
|
|
log("memory cells.\n");
|
|
log("\n");
|
|
}
|
|
void execute(std::vector<std::string> args, RTLIL::Design *design) YS_OVERRIDE {
|
|
log_header(design, "Executing MEMORY_COLLECT pass (generating $mem cells).\n");
|
|
extra_args(args, 1, design);
|
|
for (auto &mod_it : design->modules_)
|
|
if (design->selected(mod_it.second))
|
|
handle_module(design, mod_it.second);
|
|
}
|
|
} MemoryCollectPass;
|
|
|
|
PRIVATE_NAMESPACE_END
|