From 765f172211c8d7d8f14b6010193d8b53f5ec5e8f Mon Sep 17 00:00:00 2001 From: Clifford Wolf Date: Wed, 16 Jul 2014 12:13:13 +0200 Subject: [PATCH] Changes to "memory" pass for new $memwr/$mem WR_EN interface --- passes/memory/memory_collect.cc | 4 +- passes/memory/memory_map.cc | 88 ++++++++++++++++++++------------- passes/memory/memory_unpack.cc | 2 +- 3 files changed, 56 insertions(+), 38 deletions(-) diff --git a/passes/memory/memory_collect.cc b/passes/memory/memory_collect.cc index 6fe5e162c..028841f60 100644 --- a/passes/memory/memory_collect.cc +++ b/passes/memory/memory_collect.cc @@ -88,7 +88,7 @@ static void handle_memory(RTLIL::Module *module, RTLIL::Memory *memory) clk_polarity.extend(1, false); addr.extend(addr_bits, false); data.extend(memory->width, false); - en.extend(1, false); + en.extend(memory->width, false); sig_wr_clk.append(clk); sig_wr_clk_enable.append(clk_enable); @@ -147,7 +147,7 @@ static void handle_memory(RTLIL::Module *module, RTLIL::Memory *memory) assert(sig_wr_clk_polarity.width == wr_ports && sig_wr_clk_polarity.is_fully_const()); assert(sig_wr_addr.width == wr_ports * addr_bits); assert(sig_wr_data.width == wr_ports * memory->width); - assert(sig_wr_en.width == wr_ports); + assert(sig_wr_en.width == wr_ports * memory->width); mem->parameters["\\WR_PORTS"] = RTLIL::Const(wr_ports); mem->parameters["\\WR_CLK_ENABLE"] = wr_ports ? sig_wr_clk_enable.chunks[0].data : RTLIL::Const(0, 0); diff --git a/passes/memory/memory_map.cc b/passes/memory/memory_map.cc index e0e3802d1..10ab6e2f4 100644 --- a/passes/memory/memory_map.cc +++ b/passes/memory/memory_map.cc @@ -69,8 +69,8 @@ static void handle_cell(RTLIL::Module *module, RTLIL::Cell *cell) RTLIL::SigSpec refclock; RTLIL::State refclock_pol = RTLIL::State::Sx; for (int i = 0; i < clocks.width; i++) { - RTLIL::SigSpec wr_en = cell->connections["\\WR_EN"].extract(i, 1); - if (wr_en.is_fully_const() && wr_en.as_int() == 0) { + RTLIL::SigSpec wr_en = cell->connections["\\WR_EN"].extract(i * mem_width, mem_width); + if (wr_en.is_fully_const() && !wr_en.as_bool()) { static_ports.insert(i); continue; } @@ -256,7 +256,7 @@ static void handle_cell(RTLIL::Module *module, RTLIL::Cell *cell) { RTLIL::SigSpec wr_addr = cell->connections["\\WR_ADDR"].extract(j*mem_abits, mem_abits); RTLIL::SigSpec wr_data = cell->connections["\\WR_DATA"].extract(j*mem_width, mem_width); - RTLIL::SigSpec wr_en = cell->connections["\\WR_EN"].extract(j, 1); + RTLIL::SigSpec wr_en = cell->connections["\\WR_EN"].extract(j*mem_width, mem_width); RTLIL::Cell *c = new RTLIL::Cell; c->name = genid(cell->name, "$wreq", i, "", j); @@ -271,46 +271,64 @@ static void handle_cell(RTLIL::Module *module, RTLIL::Cell *cell) module->cells[c->name] = c; count_wrmux++; - RTLIL::Wire *w = new RTLIL::Wire; - w->name = genid(cell->name, "$wreq", i, "", j, "$y"); - module->wires[w->name] = w; - c->connections["\\Y"] = RTLIL::SigSpec(w); + RTLIL::Wire *w_seladdr = new RTLIL::Wire; + w_seladdr->name = genid(cell->name, "$wreq", i, "", j, "$y"); + module->wires[w_seladdr->name] = w_seladdr; + c->connections["\\Y"] = w_seladdr; - if (wr_en != RTLIL::SigSpec(1, 1)) + int wr_offset = 0; + while (wr_offset < wr_en.width) { + int wr_width = 1; + RTLIL::SigSpec wr_bit = wr_en.extract(wr_offset, 1); + + while (wr_offset + wr_width < wr_en.width) { + RTLIL::SigSpec next_wr_bit = wr_en.extract(wr_offset + wr_width, 1); + if (next_wr_bit != wr_bit) + break; + wr_width++; + } + + RTLIL::Wire *w = w_seladdr; + + if (wr_bit != RTLIL::SigSpec(1, 1)) + { + c = new RTLIL::Cell; + c->name = genid(cell->name, "$wren", i, "", j, "", wr_offset); + c->type = "$and"; + c->parameters["\\A_SIGNED"] = RTLIL::Const(0); + c->parameters["\\B_SIGNED"] = RTLIL::Const(0); + c->parameters["\\A_WIDTH"] = RTLIL::Const(1); + c->parameters["\\B_WIDTH"] = RTLIL::Const(1); + c->parameters["\\Y_WIDTH"] = RTLIL::Const(1); + c->connections["\\A"] = w; + c->connections["\\B"] = wr_bit; + module->cells[c->name] = c; + + w = new RTLIL::Wire; + w->name = genid(cell->name, "$wren", i, "", j, "", wr_offset, "$y"); + module->wires[w->name] = w; + c->connections["\\Y"] = RTLIL::SigSpec(w); + } + c = new RTLIL::Cell; - c->name = genid(cell->name, "$wren", i, "", j); - c->type = "$and"; - c->parameters["\\A_SIGNED"] = RTLIL::Const(0); - c->parameters["\\B_SIGNED"] = RTLIL::Const(0); - c->parameters["\\A_WIDTH"] = RTLIL::Const(1); - c->parameters["\\B_WIDTH"] = RTLIL::Const(1); - c->parameters["\\Y_WIDTH"] = RTLIL::Const(1); - c->connections["\\A"] = RTLIL::SigSpec(w); - c->connections["\\B"] = wr_en; + c->name = genid(cell->name, "$wrmux", i, "", j, "", wr_offset); + c->type = "$mux"; + c->parameters["\\WIDTH"] = wr_width; + c->connections["\\A"] = sig.extract(wr_offset, wr_width); + c->connections["\\B"] = wr_data.extract(wr_offset, wr_width); + c->connections["\\S"] = RTLIL::SigSpec(w); module->cells[c->name] = c; w = new RTLIL::Wire; - w->name = genid(cell->name, "$wren", i, "", j, "$y"); + w->name = genid(cell->name, "$wrmux", i, "", j, "", wr_offset, "$y"); + w->width = wr_width; module->wires[w->name] = w; - c->connections["\\Y"] = RTLIL::SigSpec(w); - } + c->connections["\\Y"] = w; - c = new RTLIL::Cell; - c->name = genid(cell->name, "$wrmux", i, "", j); - c->type = "$mux"; - c->parameters["\\WIDTH"] = cell->parameters["\\WIDTH"]; - c->connections["\\A"] = sig; - c->connections["\\B"] = wr_data; - c->connections["\\S"] = RTLIL::SigSpec(w); - module->cells[c->name] = c; - - w = new RTLIL::Wire; - w->name = genid(cell->name, "$wrmux", i, "", j, "$y"); - w->width = mem_width; - module->wires[w->name] = w; - c->connections["\\Y"] = RTLIL::SigSpec(w); - sig = RTLIL::SigSpec(w); + sig.replace(wr_offset, w); + wr_offset += wr_width; + } } module->connections.push_back(RTLIL::SigSig(data_reg_in[i], sig)); diff --git a/passes/memory/memory_unpack.cc b/passes/memory/memory_unpack.cc index 782c0cd79..bbd015833 100644 --- a/passes/memory/memory_unpack.cc +++ b/passes/memory/memory_unpack.cc @@ -74,7 +74,7 @@ static void handle_memory(RTLIL::Module *module, RTLIL::Cell *memory) cell->parameters["\\CLK_POLARITY"] = RTLIL::SigSpec(memory->parameters.at("\\WR_CLK_POLARITY")).extract(i, 1).as_const(); cell->parameters["\\PRIORITY"] = i; cell->connections["\\CLK"] = memory->connections.at("\\WR_CLK").extract(i, 1); - cell->connections["\\EN"] = memory->connections.at("\\WR_EN").extract(i, 1); + cell->connections["\\EN"] = memory->connections.at("\\WR_EN").extract(i*mem->width, mem->width); cell->connections["\\ADDR"] = memory->connections.at("\\WR_ADDR").extract(i*abits, abits); cell->connections["\\DATA"] = memory->connections.at("\\WR_DATA").extract(i*mem->width, mem->width); module->add(cell); -- 2.30.2