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phy/s7ddrphy: simplify ISERDESE2/OSERDESE2 data mapping using for loops.

This commit is contained in:
Florent Kermarrec 2020-09-30 07:33:52 +02:00
parent 68e9a02a55
commit 7f347af1ed
1 changed files with 15 additions and 82 deletions
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97
litedram/phy/s7ddrphy.py
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@ -126,14 +126,7 @@ class S7DDRPHY(Module, AutoCSR):
i_RST = ResetSignal() | self._rst.storage,
i_CLK = ClockSignal(ddr_clk),
i_CLKDIV = ClockSignal(),
i_D1 = 0,
i_D2 = 1,
i_D3 = 0,
i_D4 = 1,
i_D5 = 0,
i_D6 = 1,
i_D7 = 0,
i_D8 = 1,
**{f"i_D{n+1}": (0b10101010 >> n) & 0b1 for n in range(8)},
o_OQ = sd_clk_se_nodelay,
i_OCE = 1,
)
@ -173,14 +166,7 @@ class S7DDRPHY(Module, AutoCSR):
i_RST = ResetSignal() | self._rst.storage,
i_CLK = ClockSignal(ddr_clk),
i_CLKDIV = ClockSignal(),
i_D1 = dfi.phases[0].address[i],
i_D2 = dfi.phases[0].address[i],
i_D3 = dfi.phases[1].address[i],
i_D4 = dfi.phases[1].address[i],
i_D5 = dfi.phases[2].address[i],
i_D6 = dfi.phases[2].address[i],
i_D7 = dfi.phases[3].address[i],
i_D8 = dfi.phases[3].address[i],
**{f"i_D{n+1}": dfi.phases[n//2].address[i] for n in range(8)},
i_OCE = 1,
o_OQ = address if with_odelay else pads.a[i],
)
@ -213,14 +199,7 @@ class S7DDRPHY(Module, AutoCSR):
i_RST = ResetSignal() | self._rst.storage,
i_CLK = ClockSignal(ddr_clk),
i_CLKDIV = ClockSignal(),
i_D1 = dfi.phases[0].bank[i],
i_D2 = dfi.phases[0].bank[i],
i_D3 = dfi.phases[1].bank[i],
i_D4 = dfi.phases[1].bank[i],
i_D5 = dfi.phases[2].bank[i],
i_D6 = dfi.phases[2].bank[i],
i_D7 = dfi.phases[3].bank[i],
i_D8 = dfi.phases[3].bank[i],
**{f"i_D{n+1}": dfi.phases[n//2].bank[i] for n in range(8)},
i_OCE = 1,
o_OQ = bank if with_odelay else pads.ba[i],
)
@ -259,14 +238,7 @@ class S7DDRPHY(Module, AutoCSR):
i_RST = ResetSignal() | self._rst.storage,
i_CLK = ClockSignal(ddr_clk),
i_CLKDIV = ClockSignal(),
i_D1 = getattr(dfi.phases[0], name)[i],
i_D2 = getattr(dfi.phases[0], name)[i],
i_D3 = getattr(dfi.phases[1], name)[i],
i_D4 = getattr(dfi.phases[1], name)[i],
i_D5 = getattr(dfi.phases[2], name)[i],
i_D6 = getattr(dfi.phases[2], name)[i],
i_D7 = getattr(dfi.phases[3], name)[i],
i_D8 = getattr(dfi.phases[3], name)[i],
**{f"i_D{n+1}": getattr(dfi.phases[n//2], name)[i] for n in range(8)},
i_OCE = 1,
o_OQ = cmd if with_odelay else getattr(pads, name)[i],
)
@ -311,14 +283,7 @@ class S7DDRPHY(Module, AutoCSR):
i_RST = ResetSignal() | self._rst.storage,
i_CLK = ClockSignal(ddr_clk) if with_odelay else ClockSignal(ddr_clk+"_dqs"),
i_CLKDIV = ClockSignal(),
i_D1 = dqs_pattern.o[0],
i_D2 = dqs_pattern.o[1],
i_D3 = dqs_pattern.o[2],
i_D4 = dqs_pattern.o[3],
i_D5 = dqs_pattern.o[4],
i_D6 = dqs_pattern.o[5],
i_D7 = dqs_pattern.o[6],
i_D8 = dqs_pattern.o[7],
**{f"i_D{n+1}": dqs_pattern.o[n] for n in range(8)},
i_OCE = 1,
o_OFB = dqs_o_no_delay if with_odelay else Signal(),
o_OQ = Signal() if with_odelay else dqs_o_no_delay,
@ -364,14 +329,7 @@ class S7DDRPHY(Module, AutoCSR):
i_RST = ResetSignal() | self._rst.storage,
i_CLK = ClockSignal(ddr_clk),
i_CLKDIV = ClockSignal(),
i_D1 = dfi.phases[0].wrdata_mask[i],
i_D2 = dfi.phases[0].wrdata_mask[databits//8+i],
i_D3 = dfi.phases[1].wrdata_mask[i],
i_D4 = dfi.phases[1].wrdata_mask[databits//8+i],
i_D5 = dfi.phases[2].wrdata_mask[i],
i_D6 = dfi.phases[2].wrdata_mask[databits//8+i],
i_D7 = dfi.phases[3].wrdata_mask[i],
i_D8 = dfi.phases[3].wrdata_mask[databits//8+i],
**{f"i_D{n+1}": dfi.phases[n//2].wrdata_mask[n%2*databits//8+i] for n in range(8)},
i_OCE = 1,
o_OQ = dm_o_nodelay if with_odelay else pads.dm[i],
)
@ -415,14 +373,7 @@ class S7DDRPHY(Module, AutoCSR):
i_RST = ResetSignal() | self._rst.storage,
i_CLK = ClockSignal(ddr_clk),
i_CLKDIV = ClockSignal(),
i_D1 = dfi.phases[0].wrdata[i],
i_D2 = dfi.phases[0].wrdata[databits+i],
i_D3 = dfi.phases[1].wrdata[i],
i_D4 = dfi.phases[1].wrdata[databits+i],
i_D5 = dfi.phases[2].wrdata[i],
i_D6 = dfi.phases[2].wrdata[databits+i],
i_D7 = dfi.phases[3].wrdata[i],
i_D8 = dfi.phases[3].wrdata[databits+i],
**{f"i_D{n+1}": dfi.phases[n//2].wrdata[n%2*databits+i] for n in range(8)},
i_TCE = 1,
i_T1 = ~dq_oe_delayed,
o_TQ = dq_t,
@ -430,6 +381,11 @@ class S7DDRPHY(Module, AutoCSR):
o_OQ = dq_o_nodelay,
)
]
dq_i_bitslip = BitSlip(8,
rst = self._dly_sel.storage[i//8] & self._rdly_dq_bitslip_rst.re,
slp = self._dly_sel.storage[i//8] & self._rdly_dq_bitslip.re,
cycles = 1)
self.submodules += dq_i_bitslip
self.specials += [
Instance("ISERDESE2",
p_SERDES_MODE = "MASTER",
@ -445,34 +401,11 @@ class S7DDRPHY(Module, AutoCSR):
i_BITSLIP = 0,
i_CE1 = 1,
i_DDLY = dq_i_delayed,
o_Q8 = dq_i_data[0],
o_Q7 = dq_i_data[1],
o_Q6 = dq_i_data[2],
o_Q5 = dq_i_data[3],
o_Q4 = dq_i_data[4],
o_Q3 = dq_i_data[5],
o_Q2 = dq_i_data[6],
o_Q1 = dq_i_data[7],
**{f"o_Q{n+1}": dq_i_bitslip.i[8-1-n] for n in range(8)},
)
]
dq_bitslip = BitSlip(8,
rst = self._dly_sel.storage[i//8] & self._rdly_dq_bitslip_rst.re,
slp = self._dly_sel.storage[i//8] & self._rdly_dq_bitslip.re,
cycles = 1)
self.submodules += dq_bitslip
self.comb += dq_bitslip.i.eq(dq_i_data)
self.comb += [
dfi.phases[0].rddata[i].eq(dq_bitslip.o[0]),
dfi.phases[1].rddata[i].eq(dq_bitslip.o[2]),
dfi.phases[2].rddata[i].eq(dq_bitslip.o[4]),
dfi.phases[3].rddata[i].eq(dq_bitslip.o[6]),
dfi.phases[0].rddata[databits+i].eq(dq_bitslip.o[1]),
dfi.phases[1].rddata[databits+i].eq(dq_bitslip.o[3]),
dfi.phases[2].rddata[databits+i].eq(dq_bitslip.o[5]),
dfi.phases[3].rddata[databits+i].eq(dq_bitslip.o[7])
]
for n in range(8):
self.comb += dfi.phases[n//2].rddata[n%2*databits+i].eq(dq_i_bitslip.o[n])
if with_odelay:
self.specials += Instance("ODELAYE2",
p_SIGNAL_PATTERN = "DATA",