FPGA/usb3_pipe
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sim/lfps: now working in simulation

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This commit is contained in:
Florent Kermarrec 2019-10-09 19:03:18 +02:00
parent 8803c75bbd
commit 1bd83c3ea4
3 changed files with 3 additions and 6 deletions
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2
sim.py
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@ -50,13 +50,11 @@ class USB3PIPESim(SoCMini):
host_usb3_serdes = USB3SerDesModel() host_usb3_serdes = USB3SerDesModel()
host_usb3_pipe = USB3PIPE(serdes=host_usb3_serdes, sys_clk_freq=sys_clk_freq) host_usb3_pipe = USB3PIPE(serdes=host_usb3_serdes, sys_clk_freq=sys_clk_freq)
self.submodules += host_usb3_serdes, host_usb3_pipe self.submodules += host_usb3_serdes, host_usb3_pipe
self.comb += host_usb3_pipe.ltssm.polling_fsm.skip_lfps.eq(1) # FIXME
# USB3 Device # USB3 Device
dev_usb3_serdes = USB3SerDesModel() dev_usb3_serdes = USB3SerDesModel()
dev_usb3_pipe = USB3PIPE(serdes=dev_usb3_serdes, sys_clk_freq=sys_clk_freq) dev_usb3_pipe = USB3PIPE(serdes=dev_usb3_serdes, sys_clk_freq=sys_clk_freq)
self.submodules += dev_usb3_serdes, dev_usb3_pipe self.submodules += dev_usb3_serdes, dev_usb3_pipe
self.comb += dev_usb3_pipe.ltssm.polling_fsm.skip_lfps.eq(1) # FIXME
# Connect Host <--> Device # Connect Host <--> Device
self.comb += host_usb3_serdes.connect(dev_usb3_serdes) self.comb += host_usb3_serdes.connect(dev_usb3_serdes)

2
usb3_pipe/lfps.py
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@ -81,7 +81,7 @@ class LFPSChecker(Module):
If(idle == 0, If(idle == 0,
NextValue(count, burst_cycles - 1), NextValue(count, burst_cycles - 1),
).Else( ).Else(
NextValue(count, repeat_cycles - burst_cycles - 1), NextValue(count, repeat_cycles - 2*burst_cycles - 1),
NextState("TREPEAT") NextState("TREPEAT")
) )
).Else( ).Else(

3
usb3_pipe/ltssm.py
View File

@ -168,7 +168,6 @@ class PollingFSM(FSM):
# FIXME: Simplified State Machine for initial tests, implement exits and timeouts. # FIXME: Simplified State Machine for initial tests, implement exits and timeouts.
def __init__(self, serdes, lfps_unit, ts_unit): def __init__(self, serdes, lfps_unit, ts_unit):
self.idle = Signal() self.idle = Signal()
self.skip_lfps = Signal() # FIXME: for simulation
# # # # # #
@ -187,7 +186,7 @@ class PollingFSM(FSM):
NextValue(rx_ts2_seen, 0), NextValue(rx_ts2_seen, 0),
serdes.rx_align.eq(1), serdes.rx_align.eq(1),
lfps_unit.tx_polling.eq(1), lfps_unit.tx_polling.eq(1),
If(lfps_unit.rx_polling | self.skip_lfps, If(lfps_unit.rx_polling,
NextState("RX-EQ"), NextState("RX-EQ"),
) )
) )