diff --git a/litedram/frontend/wishbone.py b/litedram/frontend/wishbone.py index 129de31..81473b0 100644 --- a/litedram/frontend/wishbone.py +++ b/litedram/frontend/wishbone.py @@ -11,10 +11,10 @@ class LiteDRAMWishbone2Native(Module): # # # + # Control self.submodules.fsm = fsm = FSM(reset_state="CMD") fsm.act("CMD", port.cmd.valid.eq(wishbone.cyc & wishbone.stb), - port.cmd.addr.eq(wishbone.adr), port.cmd.we.eq(wishbone.we), If(port.cmd.valid & port.cmd.ready, If(wishbone.we, @@ -26,8 +26,6 @@ class LiteDRAMWishbone2Native(Module): ) fsm.act("WRITE", port.wdata.valid.eq(1), - port.wdata.we.eq(wishbone.sel), - port.wdata.data.eq(wishbone.dat_w), If(port.wdata.ready, wishbone.ack.eq(1), NextState("CMD") @@ -36,12 +34,22 @@ class LiteDRAMWishbone2Native(Module): fsm.act("READ", port.rdata.ready.eq(1), If(port.rdata.valid, - wishbone.dat_r.eq(port.rdata.data), wishbone.ack.eq(1), NextState("CMD") ) ) + # Datapath + self.comb += [ + # cmd + port.cmd.addr.eq(wishbone.adr), + # write + port.wdata.we.eq(wishbone.sel), + port.wdata.data.eq(wishbone.dat_w), + # read + wishbone.dat_r.eq(port.rdata.data), + ] + class LiteDRAMWishbone2AXI(Module): def __init__(self, wishbone, port):