The TX radio will normally transmit a late not-timed packet when an
underflow occurs between packets within a burst. However, if it was
only one cycle late, then the packet would be dropped. This change
rearms the state machine more quickly in this corner case to allow
this late packet to be accepted. The underflow error will still be
reported.
Original-commit: 9faac6597cf21ca11e40d4e98797cea2848c40b0
The tready signal that was used when EN_MAGNITUDE equals 0 was not
correct. This commit allows EN_MAGNITUDE to be disabled.
Original-commit: ef449523df61268d4efbc86a12cb098c2b2bf239
This replaces the legacy RFNoC FFT block with a new one of the same
name that includes a superset of the original features. New features
include cyclic prefix insertion or removal and FFT sizes up to 64k.
Original-commit: 25fffb006755b2e91f0138eb4af3ab9e16b8690c
The underlying Xilinx CORDIC IP uses 2 bits for the whole part of its
(X,Y) inputs and its magnitude output. So, having 17 bits means we have
enough precision to represent the entire range of an sc16. The 16-bit
CORDIC is insufficient to cover this entire range.
Original-commit: 0d3d69493aac9239ae437b04f291c61669678606
- Add documentation
- Add generate block labels
- Remove tabs and fix indentation
- Separate the code into three logical sections
Original-commit: 76074ecb319bf770805374b81c966b94cba898c5
Initialize test_status for backwards compatability with testbenches
that don't call start_tb().
Original-commit: 72295360e65d989dd774deabc4add0a54eb6f97e
Rename the BIST image cores to match the default image core names. This
eliminates the need to provide special arguments to build these images.
Original-commit: aae712c2eafe3f78ba8ed553190f7010a2d17c57
This updates the RFNoC image cores to separate the two DRAM banks on
X4xx by splitting them into "dram0" and "dram1". Previously, both DRAM
banks shared the same DRAM port, named "dram", which created some
confusion.
The Replay block has also been duplicated in the bitstreams that use
both banks, so we now have one Replay block per bank.
Original-commit: b5cfab8922e5b3f4ff13a8a64e8b0319876f13db
This adds support for the X440_X4_200 variant which supports up to
200 MHz bandwidth (250 Msps), has a DDC and DUC on each channel,
4 x 10 GbE interfaces, and no DRAM.
Original-commit: bdaba58750ce0c2ccc58769936c3c5c4a6b2d2cf
Adds a 266.667 MHz compute engine clock and uses it instead of the
radio clock for the DDC and DUC. Using a faster clock than the radio
allows the DDC and DUC to drain after a stall in the data flow.
Original-commit: ab93cb0929b9536b6d6cbfdc4813e6ba169053ae
Adds a 266.667 MHz compute engine clock and uses it instead of the
radio clock for the DDC and DUC. Using a faster clock than the radio
allows the DDC and DUC to drain after a stall in the data flow.
Original-commit: ff55d406a02cc934a5c238d22c836bea08ade3d1
Enable USE_AS_BUFF on packet gate to allow many packets to be buffered.
This reduces latency when several small packets are sent out close
together.
Original-commit: 32d348efe482d40c7090d8203a3c1374dfcb4a68
Fix the TUSER width for some buses in eth_ipv4_chdr_adapter. This
allows wider CHDR widths to be used with 10 GbE.
Original-commit: f0ed58f7518410fc174a6356c072dfb21e3de253
Moves X4C_100, X4C_200, C1_100, and C1_200 from experimental to
available targets and makes the needed changes to allow them to build
successfully.
Adds support for "UC" FPGA variant. U indicates that QSFP0 is unused
and C indicates that QSFP1 is 100 GbE.
Adds experimental CG_200 variant.
Original-commit: cb9609c886b156e22ae9d879fffad8d060f2ca2d
Removes the CPU_W parameter from x4xx.v and the qsfp_wrapper files. The
value of this parameter depends on the axi_eth_dma IP and therefore
should not be changed.
Original-commit: 84c49f40adc980e2968a6a844b4bdbb2d2d38c9c
This means that the stream endpoint's crossbar connection can be wider
and therefore support a higher bandwidth than the RFNoC block to which
the endpoint is connected. This improves host streaming performance.
Original-commit: 6e15e8bdb668163d51ff9e4099f587fde404ec63
Both the chdr_stream_output and chdr_xb_ingress_buff have a packet
gate, making one of them somewhat redundant. Removing one of them
reduces latency and frees up FPGA resources.
Original-commit: 9533bd025d74787d25b135d3092bffa1b51f6731
This adds a parameter to chdr_xb_ingress_buff and to chdr_stream_output
to make their packet gates optional. They are included by default.
Having the packet gate in chdr_xb_ingress_buff can reduce contention in
the crossbar. Having the packet gate in chdr_stream_output can reduce
the latency for non-data packets (e.g., stream status updates).
Original-commit: 67e0a5a340c14cb0c6ee170fb17be2c09737d723
This adds support for different widths on each port and adds the
ability to disable routes within the crossbar. Both of these features
allow for FPGA resource savings.
These features are controlled by the new parameters PORT_WIDTHS and
ENABLED_PATHS. Unused routes will have the associated logic removed.
A new testbench adds support for testing different port widths and
disabled routes. It also adds more rigrous testing of the crossbar.
Original-commit: 18bf81d91055b68765c44ca86a2cbcfa9704c749
Adds a BUILD_BASE_DIR makefile variable that allows you to specify the
base directory for FPGA build outputs. This allows you to put the
output from each run of make into a unique directory, or to run
multiple instances of make in parallel with each build's output being
put in a different directory. For example:
make X310_XG BUILD_BASE_DIR=/path/to/builds
Original-commit: bc6db8409ba756bbad0d0c158ffb00c614b58fd9
Adds a BUILD_SEED make variable that can be set to a 32-bit integer,
and adds an FPGA read-only register initialized by this variable.
Changing this variable will randomly affect the FPGA build results.
This can be useful when your build fails timing by a small amount,
allowing you to build again and get different results with the same
code.
For example, you could run the following to produce an FPGA build with
different timing results from the default build:
make X310_XG BUILD_SEED=123
Original-commit: 3a3a03486f9221c2e59fa6d0826c23d17730956d
This fixes recognition of $error and $fatal statements in the output of
XSim when running run_testbenches.py. XSim apparently prints a "shift
in" character (0x15) as part of its error statements, so the regular
expression was not matching.
Original-commit: ee36d7fabcf73f773edae00fbb1604a600db992d
This adds time alignment to the radio, so that the first transmitted or
received sample gets shifted into the position corresponding to its
timestamp. The applies only to configurations in which SPC > 1.
For example, if the radio time is incrementing by 4 samples per cycle
(SPC = 4) starting at time 0, and a packet is supposed to be
transmitted at time 201, then the data must be left-shifted by one
sample (201 % 4 = 1), so that the first sample of the packet correctly
aligns with the radio sample corresponding to time 201. Things get more
complicated if the radio time is not a multiple of the SPC (i.e., the
radio time started at time 1, 2, or 3 instead of 0).
Original-commit: 9afa6be7b270047cb03cbd5a16482e5d19edc3dd
This module supports timed sample alignment by shifting radio words
with multiple samples per cycle to put the first sample into the
correct position for the required timestamp.
Original-commit: 0a13db4afaaf88dda3bd194bbf20271c690d5c7f
Patch AR76780 was already listed as a requirement for X4xx and N3xx,
but was not listed as a requirement for X3xx and E3xx. This change
makes it required for all Vivado-based USRPs.
Original-commit: 5aa6bc4418a30d6e6fde80b80632f9f9115ea5c4
Wade Fife