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Placeholder values for flow control credit outputs

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This commit is contained in:
Alex Forencich 2019-12-06 19:16:05 -08:00
parent 60a2813fbc
commit 00858212c6
2 changed files with 121 additions and 18 deletions
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83
tb/pcie_us.py
View File

@ -2507,8 +2507,9 @@ class UltrascalePCIe(Device):
self.rc_source.send(tlp.pack_us_rc())
# transmit flow control
#pcie_tfc_nph_av
#pcie_tfc_npd_av
# TODO
pcie_tfc_nph_av.next = 0x3
pcie_tfc_npd_av.next = 0x3
# configuration management
if cfg_mgmt_read_write_done:
@ -2599,13 +2600,77 @@ class UltrascalePCIe(Device):
#cfg_msg_transmit_done
# configuration flow control
#cfg_fc_ph
#cfg_fc_pd
#cfg_fc_nph
#cfg_fc_npd
#cfg_fc_cplh
#cfg_fc_cpld
#cfg_fc_sel
if (cfg_fc_sel == 0b000):
# Receive credits at link partner
# TODO
cfg_fc_ph.next = 0
cfg_fc_pd.next = 0
cfg_fc_nph.next = 0
cfg_fc_npd.next = 0
cfg_fc_cplh.next = 0
cfg_fc_cpld.next = 0
elif (cfg_fc_sel == 0b001):
# Receive credit limit
# TODO
cfg_fc_ph.next = 0x80
cfg_fc_pd.next = 0x800
cfg_fc_nph.next = 0x80
cfg_fc_npd.next = 0x800
cfg_fc_cplh.next = 0x80
cfg_fc_cpld.next = 0x800
elif (cfg_fc_sel == 0b010):
# Receive credits consumed
# TODO
cfg_fc_ph.next = 0
cfg_fc_pd.next = 0
cfg_fc_nph.next = 0
cfg_fc_npd.next = 0
cfg_fc_cplh.next = 0
cfg_fc_cpld.next = 0
elif (cfg_fc_sel == 0b011):
# Available space in receive buffer
# TODO
cfg_fc_ph.next = 0
cfg_fc_pd.next = 0
cfg_fc_nph.next = 0
cfg_fc_npd.next = 0
cfg_fc_cplh.next = 0
cfg_fc_cpld.next = 0
elif (cfg_fc_sel == 0b100):
# Transmit credits available
# TODO
cfg_fc_ph.next = 0x80
cfg_fc_pd.next = 0x800
cfg_fc_nph.next = 0x80
cfg_fc_npd.next = 0x800
cfg_fc_cplh.next = 0x80
cfg_fc_cpld.next = 0x800
elif (cfg_fc_sel == 0b101):
# Transmit credit limit
# TODO
cfg_fc_ph.next = 0x80
cfg_fc_pd.next = 0x800
cfg_fc_nph.next = 0x80
cfg_fc_npd.next = 0x800
cfg_fc_cplh.next = 0x80
cfg_fc_cpld.next = 0x800
elif (cfg_fc_sel == 0b110):
# Transmit credits consumed
# TODO
cfg_fc_ph.next = 0
cfg_fc_pd.next = 0
cfg_fc_nph.next = 0
cfg_fc_npd.next = 0
cfg_fc_cplh.next = 0
cfg_fc_cpld.next = 0
else:
# Reserved
cfg_fc_ph.next = 0
cfg_fc_pd.next = 0
cfg_fc_nph.next = 0
cfg_fc_npd.next = 0
cfg_fc_cplh.next = 0
cfg_fc_cpld.next = 0
# per-function status
#cfg_per_func_status_control

56
tb/pcie_usp.py
View File

@ -833,8 +833,9 @@ class UltrascalePlusPCIe(Device):
self.rc_source.send(tlp.pack_us_rc())
# transmit flow control
#pcie_tfc_nph_av
#pcie_tfc_npd_av
# TODO
pcie_tfc_nph_av.next = 0xf
pcie_tfc_npd_av.next = 0xf
# configuration management
# TODO four cycle delay
@ -910,13 +911,50 @@ class UltrascalePlusPCIe(Device):
#cfg_msg_transmit_done
# configuration flow control
#cfg_fc_ph
#cfg_fc_pd
#cfg_fc_nph
#cfg_fc_npd
#cfg_fc_cplh
#cfg_fc_cpld
#cfg_fc_sel
if (cfg_fc_sel == 0b010):
# Receive credits consumed
# TODO
cfg_fc_ph.next = 0
cfg_fc_pd.next = 0
cfg_fc_nph.next = 0
cfg_fc_npd.next = 0
cfg_fc_cplh.next = 0
cfg_fc_cpld.next = 0
elif (cfg_fc_sel == 0b100):
# Transmit credits available
# TODO
cfg_fc_ph.next = 0x80
cfg_fc_pd.next = 0x800
cfg_fc_nph.next = 0x80
cfg_fc_npd.next = 0x800
cfg_fc_cplh.next = 0x80
cfg_fc_cpld.next = 0x800
elif (cfg_fc_sel == 0b101):
# Transmit credit limit
# TODO
cfg_fc_ph.next = 0x80
cfg_fc_pd.next = 0x800
cfg_fc_nph.next = 0x80
cfg_fc_npd.next = 0x800
cfg_fc_cplh.next = 0x80
cfg_fc_cpld.next = 0x800
elif (cfg_fc_sel == 0b110):
# Transmit credits consumed
# TODO
cfg_fc_ph.next = 0
cfg_fc_pd.next = 0
cfg_fc_nph.next = 0
cfg_fc_npd.next = 0
cfg_fc_cplh.next = 0
cfg_fc_cpld.next = 0
else:
# Reserved
cfg_fc_ph.next = 0
cfg_fc_pd.next = 0
cfg_fc_nph.next = 0
cfg_fc_npd.next = 0
cfg_fc_cplh.next = 0
cfg_fc_cpld.next = 0
# configuration control
#cfg_hot_reset_in