From d4946b060a342cb215acca62a6c8ed379efefa75 Mon Sep 17 00:00:00 2001 From: Konrad Beckmann Date: Mon, 6 Jul 2020 16:04:24 +0200 Subject: [PATCH] vendor.lattice_ecp5: Add support for io with xdr=7 This adds support for IOs with xdr=7 using the IODDR71B and ODDR71B primitives. --- nmigen/vendor/lattice_ecp5.py | 61 ++++++++++++++++++++++++++++++----- 1 file changed, 53 insertions(+), 8 deletions(-) diff --git a/nmigen/vendor/lattice_ecp5.py b/nmigen/vendor/lattice_ecp5.py index 0abeba9..22526d3 100644 --- a/nmigen/vendor/lattice_ecp5.py +++ b/nmigen/vendor/lattice_ecp5.py @@ -399,6 +399,17 @@ class LatticeECP5Platform(TemplatedPlatform): o_Q0=q0[bit], o_Q1=q1[bit], o_Q2=q2[bit], o_Q3=q3[bit] ) + def get_iddr71b(sclk, eclk, d, q0, q1, q2, q3, q4, q5, q6): + for bit in range(len(d)): + m.submodules += Instance("IDDR71B", + i_SCLK=sclk, + i_ECLK=eclk, + i_RST=Const(0), + i_D=d[bit], + o_Q0=q0[bit], o_Q1=q1[bit], o_Q2=q2[bit], o_Q3=q3[bit], + o_Q4=q4[bit], o_Q5=q5[bit], o_Q6=q6[bit], + ) + def get_oddr(sclk, d0, d1, q): for bit in range(len(q)): m.submodules += Instance("ODDRX1F", @@ -418,6 +429,17 @@ class LatticeECP5Platform(TemplatedPlatform): o_Q=q[bit] ) + def get_oddr71b(sclk, eclk, d0, d1, d2, d3, d4, d5, d6, q): + for bit in range(len(q)): + m.submodules += Instance("ODDR71B", + i_SCLK=sclk, + i_ECLK=eclk, + i_RST=Const(0), + i_D0=d0[bit], i_D1=d1[bit], i_D2=d2[bit], i_D3=d3[bit], + i_D4=d4[bit], i_D5=d5[bit], i_D6=d6[bit], + o_Q=q[bit] + ) + def get_ineg(z, invert): if invert: a = Signal.like(z, name_suffix="_n") @@ -445,6 +467,14 @@ class LatticeECP5Platform(TemplatedPlatform): pin_i1 = get_ineg(pin.i1, i_invert) pin_i2 = get_ineg(pin.i2, i_invert) pin_i3 = get_ineg(pin.i3, i_invert) + elif pin.xdr == 7: + pin_i0 = get_ineg(pin.i0, i_invert) + pin_i1 = get_ineg(pin.i1, i_invert) + pin_i2 = get_ineg(pin.i2, i_invert) + pin_i3 = get_ineg(pin.i3, i_invert) + pin_i4 = get_ineg(pin.i4, i_invert) + pin_i5 = get_ineg(pin.i5, i_invert) + pin_i6 = get_ineg(pin.i6, i_invert) if "o" in pin.dir: if pin.xdr < 2: pin_o = get_oneg(pin.o, o_invert) @@ -456,6 +486,14 @@ class LatticeECP5Platform(TemplatedPlatform): pin_o1 = get_oneg(pin.o1, o_invert) pin_o2 = get_oneg(pin.o2, o_invert) pin_o3 = get_oneg(pin.o3, o_invert) + elif pin.xdr == 7: + pin_o0 = get_oneg(pin.o0, o_invert) + pin_o1 = get_oneg(pin.o1, o_invert) + pin_o2 = get_oneg(pin.o2, o_invert) + pin_o3 = get_oneg(pin.o3, o_invert) + pin_o4 = get_oneg(pin.o4, o_invert) + pin_o5 = get_oneg(pin.o5, o_invert) + pin_o6 = get_oneg(pin.o6, o_invert) i = o = t = None if "i" in pin.dir: @@ -497,6 +535,13 @@ class LatticeECP5Platform(TemplatedPlatform): get_oddrx2(pin.o_clk, pin.o_fclk, pin_o0, pin_o1, pin_o2, pin_o3, o) if pin.dir in ("oe", "io"): get_oreg(pin.o_clk, ~pin.oe, t) + elif pin.xdr == 7: + if "i" in pin.dir: + get_iddr71b(pin.i_clk, pin.i_fclk, i, pin_i0, pin_i1, pin_i2, pin_i3, pin_i4, pin_i5, pin_i6) + if "o" in pin.dir: + get_oddr71b(pin.o_clk, pin.o_fclk, pin_o0, pin_o1, pin_o2, pin_o3, pin_o4, pin_o5, pin_o6, o) + if pin.dir in ("oe", "io"): + get_oreg(pin.o_clk, ~pin.oe, t) else: assert False @@ -504,7 +549,7 @@ class LatticeECP5Platform(TemplatedPlatform): def get_input(self, pin, port, attrs, invert): self._check_feature("single-ended input", pin, attrs, - valid_xdrs=(0, 1, 2, 4), valid_attrs=True) + valid_xdrs=(0, 1, 2, 4, 7), valid_attrs=True) m = Module() i, o, t = self._get_xdr_buffer(m, pin, i_invert=invert) for bit in range(len(port)): @@ -516,7 +561,7 @@ class LatticeECP5Platform(TemplatedPlatform): def get_output(self, pin, port, attrs, invert): self._check_feature("single-ended output", pin, attrs, - valid_xdrs=(0, 1, 2, 4), valid_attrs=True) + valid_xdrs=(0, 1, 2, 4, 7), valid_attrs=True) m = Module() i, o, t = self._get_xdr_buffer(m, pin, o_invert=invert) for bit in range(len(port)): @@ -528,7 +573,7 @@ class LatticeECP5Platform(TemplatedPlatform): def get_tristate(self, pin, port, attrs, invert): self._check_feature("single-ended tristate", pin, attrs, - valid_xdrs=(0, 1, 2, 4), valid_attrs=True) + valid_xdrs=(0, 1, 2, 4, 7), valid_attrs=True) m = Module() i, o, t = self._get_xdr_buffer(m, pin, o_invert=invert) for bit in range(len(port)): @@ -541,7 +586,7 @@ class LatticeECP5Platform(TemplatedPlatform): def get_input_output(self, pin, port, attrs, invert): self._check_feature("single-ended input/output", pin, attrs, - valid_xdrs=(0, 1, 2, 4), valid_attrs=True) + valid_xdrs=(0, 1, 2, 4, 7), valid_attrs=True) m = Module() i, o, t = self._get_xdr_buffer(m, pin, i_invert=invert, o_invert=invert) for bit in range(len(port)): @@ -555,7 +600,7 @@ class LatticeECP5Platform(TemplatedPlatform): def get_diff_input(self, pin, p_port, n_port, attrs, invert): self._check_feature("differential input", pin, attrs, - valid_xdrs=(0, 1, 2, 4), valid_attrs=True) + valid_xdrs=(0, 1, 2, 4, 7), valid_attrs=True) m = Module() i, o, t = self._get_xdr_buffer(m, pin, i_invert=invert) for bit in range(len(p_port)): @@ -567,7 +612,7 @@ class LatticeECP5Platform(TemplatedPlatform): def get_diff_output(self, pin, p_port, n_port, attrs, invert): self._check_feature("differential output", pin, attrs, - valid_xdrs=(0, 1, 2, 4), valid_attrs=True) + valid_xdrs=(0, 1, 2, 4, 7), valid_attrs=True) m = Module() i, o, t = self._get_xdr_buffer(m, pin, o_invert=invert) for bit in range(len(p_port)): @@ -579,7 +624,7 @@ class LatticeECP5Platform(TemplatedPlatform): def get_diff_tristate(self, pin, p_port, n_port, attrs, invert): self._check_feature("differential tristate", pin, attrs, - valid_xdrs=(0, 1, 2, 4), valid_attrs=True) + valid_xdrs=(0, 1, 2, 4, 7), valid_attrs=True) m = Module() i, o, t = self._get_xdr_buffer(m, pin, o_invert=invert) for bit in range(len(p_port)): @@ -592,7 +637,7 @@ class LatticeECP5Platform(TemplatedPlatform): def get_diff_input_output(self, pin, p_port, n_port, attrs, invert): self._check_feature("differential input/output", pin, attrs, - valid_xdrs=(0, 1, 2, 4), valid_attrs=True) + valid_xdrs=(0, 1, 2, 4, 7), valid_attrs=True) m = Module() i, o, t = self._get_xdr_buffer(m, pin, i_invert=invert, o_invert=invert) for bit in range(len(p_port)): -- 2.30.2