diff options
Diffstat (limited to 'passes/memory')
-rw-r--r-- | passes/memory/memory_collect.cc | 232 |
1 files changed, 9 insertions, 223 deletions
diff --git a/passes/memory/memory_collect.cc b/passes/memory/memory_collect.cc index 7e82f47dc..ede6ca6a1 100644 --- a/passes/memory/memory_collect.cc +++ b/passes/memory/memory_collect.cc @@ -18,231 +18,11 @@ */ #include "kernel/yosys.h" -#include "kernel/sigtools.h" +#include "kernel/mem.h" USING_YOSYS_NAMESPACE PRIVATE_NAMESPACE_BEGIN -bool memcells_cmp(Cell *a, Cell *b) -{ - if (a->type == ID($memrd) && b->type == ID($memrd)) - return a->name < b->name; - if (a->type == ID($memrd) || b->type == ID($memrd)) - return (a->type == ID($memrd)) < (b->type == ID($memrd)); - return a->parameters.at(ID::PRIORITY).as_int() < b->parameters.at(ID::PRIORITY).as_int(); -} - -Cell *handle_memory(Module *module, RTLIL::Memory *memory) -{ - log("Collecting $memrd, $memwr and $meminit for memory `%s' in module `%s':\n", - memory->name.c_str(), module->name.c_str()); - - Const init_data(State::Sx, memory->size * memory->width); - SigMap sigmap(module); - - int wr_ports = 0; - SigSpec sig_wr_clk; - SigSpec sig_wr_clk_enable; - SigSpec sig_wr_clk_polarity; - SigSpec sig_wr_addr; - SigSpec sig_wr_data; - SigSpec sig_wr_en; - - int rd_ports = 0; - SigSpec sig_rd_clk; - SigSpec sig_rd_clk_enable; - SigSpec sig_rd_clk_polarity; - SigSpec sig_rd_transparent; - SigSpec sig_rd_addr; - SigSpec sig_rd_data; - SigSpec sig_rd_en; - - int addr_bits = 0; - std::vector<Cell*> memcells; - - for (auto cell : module->cells()) - if (cell->type.in(ID($memrd), ID($memwr), ID($meminit)) && memory->name == cell->parameters[ID::MEMID].decode_string()) { - SigSpec addr = sigmap(cell->getPort(ID::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 == ID($meminit)) - { - SigSpec addr = sigmap(cell->getPort(ID::ADDR)); - SigSpec data = sigmap(cell->getPort(ID::DATA)); - - if (!addr.is_fully_const()) - log_error("Non-constant address %s in memory initialization %s.\n", log_signal(addr), log_id(cell)); - if (!data.is_fully_const()) - log_error("Non-constant data %s in memory initialization %s.\n", log_signal(data), log_id(cell)); - - int offset = (addr.as_int() - memory->start_offset) * memory->width; - - if (offset < 0 || offset + GetSize(data) > GetSize(init_data)) - log_warning("Address %s in memory initialization %s is out-of-bounds.\n", log_signal(addr), log_id(cell)); - - for (int i = 0; i < GetSize(data); i++) - if (0 <= i+offset && i+offset < GetSize(init_data)) - init_data.bits[i+offset] = data[i].data; - - continue; - } - - if (cell->type == ID($memwr)) - { - SigSpec clk = sigmap(cell->getPort(ID::CLK)); - SigSpec clk_enable = SigSpec(cell->parameters[ID::CLK_ENABLE]); - SigSpec clk_polarity = SigSpec(cell->parameters[ID::CLK_POLARITY]); - SigSpec addr = sigmap(cell->getPort(ID::ADDR)); - SigSpec data = sigmap(cell->getPort(ID::DATA)); - SigSpec en = sigmap(cell->getPort(ID::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 == ID($memrd)) - { - SigSpec clk = sigmap(cell->getPort(ID::CLK)); - SigSpec clk_enable = SigSpec(cell->parameters[ID::CLK_ENABLE]); - SigSpec clk_polarity = SigSpec(cell->parameters[ID::CLK_POLARITY]); - SigSpec transparent = SigSpec(cell->parameters[ID::TRANSPARENT]); - SigSpec addr = sigmap(cell->getPort(ID::ADDR)); - SigSpec data = sigmap(cell->getPort(ID::DATA)); - SigSpec en = sigmap(cell->getPort(ID::EN)); - - if (!en.is_fully_zero()) - { - clk.extend_u0(1, false); - clk_enable.extend_u0(1, false); - clk_polarity.extend_u0(1, false); - transparent.extend_u0(1, false); - addr.extend_u0(addr_bits, false); - data.extend_u0(memory->width, false); - - sig_rd_clk.append(clk); - sig_rd_clk_enable.append(clk_enable); - sig_rd_clk_polarity.append(clk_polarity); - sig_rd_transparent.append(transparent); - sig_rd_addr.append(addr); - sig_rd_data.append(data); - sig_rd_en.append(en); - - rd_ports++; - } - continue; - } - } - - std::stringstream sstr; - sstr << "$mem$" << memory->name.str() << "$" << (autoidx++); - - Cell *mem = module->addCell(sstr.str(), ID($mem)); - mem->parameters[ID::MEMID] = Const(memory->name.str()); - mem->parameters[ID::WIDTH] = Const(memory->width); - mem->parameters[ID::OFFSET] = Const(memory->start_offset); - mem->parameters[ID::SIZE] = Const(memory->size); - mem->parameters[ID::ABITS] = Const(addr_bits); - mem->parameters[ID::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[ID::WR_PORTS] = Const(wr_ports); - mem->parameters[ID::WR_CLK_ENABLE] = wr_ports ? sig_wr_clk_enable.as_const() : State::S0; - mem->parameters[ID::WR_CLK_POLARITY] = wr_ports ? sig_wr_clk_polarity.as_const() : State::S0; - - mem->setPort(ID::WR_CLK, sig_wr_clk); - mem->setPort(ID::WR_ADDR, sig_wr_addr); - mem->setPort(ID::WR_DATA, sig_wr_data); - mem->setPort(ID::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[ID::RD_PORTS] = Const(rd_ports); - mem->parameters[ID::RD_CLK_ENABLE] = rd_ports ? sig_rd_clk_enable.as_const() : State::S0; - mem->parameters[ID::RD_CLK_POLARITY] = rd_ports ? sig_rd_clk_polarity.as_const() : State::S0; - mem->parameters[ID::RD_TRANSPARENT] = rd_ports ? sig_rd_transparent.as_const() : State::S0; - - mem->setPort(ID::RD_CLK, sig_rd_clk); - mem->setPort(ID::RD_ADDR, sig_rd_addr); - mem->setPort(ID::RD_DATA, sig_rd_data); - mem->setPort(ID::RD_EN, sig_rd_en); - - // Copy attributes from RTLIL memory to $mem - for (auto attr : memory->attributes) - mem->attributes[attr.first] = attr.second; - - 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() override @@ -258,8 +38,14 @@ struct MemoryCollectPass : public Pass { void execute(std::vector<std::string> args, RTLIL::Design *design) override { log_header(design, "Executing MEMORY_COLLECT pass (generating $mem cells).\n"); extra_args(args, 1, design); - for (auto module : design->selected_modules()) - handle_module(design, module); + for (auto module : design->selected_modules()) { + for (auto &mem : Mem::get_selected_memories(module)) { + if (!mem.packed) { + mem.packed = true; + mem.emit(); + } + } + } } } MemoryCollectPass; |