From: Sebastien Bourdeauducq Date: Sun, 9 Jun 2013 21:36:32 +0000 (+0200) Subject: bus/lasmibus: bugfixes X-Git-Tag: 24jan2021_ls180~2099^2~564 X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=f2e2397c9dcc5bc706a1cd4b322e41f89c4066b3;p=litex.git bus/lasmibus: bugfixes --- diff --git a/migen/bus/lasmibus.py b/migen/bus/lasmibus.py index 24fb2bac..18259d29 100644 --- a/migen/bus/lasmibus.py +++ b/migen/bus/lasmibus.py @@ -50,7 +50,6 @@ class Crossbar(Module): controller_bits = log2_int(ncontrollers, False) self.masters = [Interface(rca_bits + bank_bits + controller_bits, dw, 1, read_latency, write_latency) for i in range(nmasters)] - masters_a = Array(self.masters) ### @@ -61,6 +60,7 @@ class Crossbar(Module): controller_selected = [ca == nc for ca in m_ca] else: controller_selected = [1]*nmasters + master_acks = [0]*nmasters for nb in range(nbanks): bank = getattr(controller, "bank"+str(nb)) @@ -77,10 +77,13 @@ class Crossbar(Module): # route requests self.comb += [ bank.adr.eq(Array(m_rca)[rr.grant]), - bank.we.eq(masters_a[rr.grant].we), - bank.stb.eq(masters_a[rr.grant].stb), - masters_a[rr.grant].ack.eq(bank.ack) + bank.we.eq(Array(self.masters)[rr.grant].we), + bank.stb.eq(Array(bank_requested)[rr.grant]) ] + master_acks = [master_ack | ((rr.grant == nm) & bank.ack) + for nm, master_ack in enumerate(master_acks)] + + self.comb += [master.ack.eq(master_ack) for master, master_ack in zip(self.masters, master_acks)] # route data writes controller_selected_wl = controller_selected @@ -215,7 +218,7 @@ class Target(Module): self.model = model self.bus = Interface(*ifargs, **ifkwargs) self.rd_pipeline = [None]*self.bus.read_latency - self.wr_pipeline = [None]*self.bus.write_latency + self.wr_pipeline = [None]*(self.bus.write_latency + 1) def do_simulation(self, s): # determine banks with pending requests