From 4ab34c982c8e182b8c9ced5d5afc58777984a6b4 Mon Sep 17 00:00:00 2001 From: Jean THOMAS Date: Mon, 8 Jun 2020 18:50:03 +0200 Subject: [PATCH] Rework RAM port for nMigen compliance --- gram/core/crossbar.py | 15 ++++++++------- 1 file changed, 8 insertions(+), 7 deletions(-) diff --git a/gram/core/crossbar.py b/gram/core/crossbar.py index 1ca18e7..c81abc7 100644 --- a/gram/core/crossbar.py +++ b/gram/core/crossbar.py @@ -72,14 +72,13 @@ class gramCrossbar(Elaboratable): self.rank_bits = log2_int(self.nranks, False) self.masters = [] + self._pending_submodules = [] def get_port(self, mode="both", data_width=None, clock_domain="sys", reverse=False): - if self.finalized: - raise FinalizeError - if data_width is None: # use internal data_width when no width adaptation is requested data_width = self.controller.data_width + print("data_width=", data_width) # Crossbar port ---------------------------------------------------------------------------- port = gramNativePort( @@ -98,7 +97,7 @@ class gramCrossbar(Elaboratable): data_width = port.data_width, clock_domain = clock_domain, id = port.id) - self.submodules += gramNativePortCDC(new_port, port) + self._pending_submodules.append(gramNativePortCDC(new_port, port)) port = new_port # Data width convertion -------------------------------------------------------------------- @@ -113,8 +112,8 @@ class gramCrossbar(Elaboratable): data_width = data_width, clock_domain = clock_domain, id = port.id) - self.submodules += ClockDomainsRenamer(clock_domain)( - LiteDRAMNativePortConverter(new_port, port, reverse)) + self._pending_submodules.append(ClockDomainsRenamer(clock_domain)( + gramNativePortConverter(new_port, port, reverse))) port = new_port return port @@ -122,6 +121,8 @@ class gramCrossbar(Elaboratable): def elaborate(self, platform): m = Module() + m.submodules += self._pending_submodules + controller = self.controller nmasters = len(self.masters) @@ -203,7 +204,7 @@ class gramCrossbar(Elaboratable): ] for nm, master in enumerate(self.masters): with m.Case(2**nm): - m.d.comb = [ + m.d.comb += [ controller.wdata.eq(master.wdata.data), controller.wdata_we.eq(master.wdata.we), ] -- 2.30.2