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Promote AXI-Read implementation to a complete AXI wrapper (#1842)
* init commit of hardcoded axi wrapper for a 'main' kernel * add axi-reads-calix * hook up inputs to channels in the wrapper. tbd if this works * Working calyx verison of AR and R TBD if this actually implements AXI correctly. There are currently some hacks in place (marked with todos) to get this to compile, namely some splicing that doesn't consider what we actually want to splice (it just takes [31:0]) as opposed to dynamically considering actual bits we want. A few other things that should be cleaned up eventually Need to create a cocotb testbench to test correctness * Track output of compiled calyx read channel Maybe this shouldn't be here, but for now (having deleted my working directory earlier) putting it here * update gitignore to get rid of sim_build and other cocotb artifacts * Working make files for running cocotb tests Simply run make from the cocotb directory and axi-read-tests will be executed * Add xID signals for cocotb compatability We tie ARID low in our manager * Fix prefix issue on cocotb axi test bench Prefixes should not contain trailing "_" * commit to repro 'make WAVES=1' cocotb error from axi-reads-calyx.futil * axi-reads patch * sync debug * Add txn_len initialization to 16 in calyx program * AXI Read fixed to get to read channel start Got rid of "assert_val" and "block_transfer" groups and instead perform these things inside "do_ar_transfer", this is required because we cant assert valid before we drive the data correctly, so needs to happen in parallel. Currently: This seems to write 16 times to same place, this is due to hardcoding of 16 in ar transfer, not sure why address doesn't increment this is tbd (and next TODO) * Add integer byte conversion for tests on Calyx AXI testharness * WIP get reads to work. Add incr_curr_addr group This is part of read channel control sequence * remove .fst from tracking * Add more data to testbench to make waveform viewing easier * Reads seem to be terminating correctly at RLAST * AR transfers seem to work, valid is high for 1 cycle * Unreduced axi-reads-calyx.futil Also reduces data bus width to 32 * Cocotb testbench now passes * Formatted and passing axi-read-tests * Reduce and comment axi-reads-calyx.futil * remove axi-reads.v from being tracked * add a todo * add required ARPROT signal. This is hardcoded to be priviliged * rename directories to yxi/axi-calyx * initial commit of axi-writes-calyx, a copy of axi-reads-calyx * WIP axi writes * rename directories * WIP imlpementing writes * add testing for writes, note makefile is overwritten so now tests writes, not reads * passing axi writes and testing * init commit of hardcoded axi wrapper for a 'main' kernel * add axi-reads-calix * hook up inputs to channels in the wrapper. tbd if this works * Working calyx verison of AR and R TBD if this actually implements AXI correctly. There are currently some hacks in place (marked with todos) to get this to compile, namely some splicing that doesn't consider what we actually want to splice (it just takes [31:0]) as opposed to dynamically considering actual bits we want. A few other things that should be cleaned up eventually Need to create a cocotb testbench to test correctness * Track output of compiled calyx read channel Maybe this shouldn't be here, but for now (having deleted my working directory earlier) putting it here * Working make files for running cocotb tests Simply run make from the cocotb directory and axi-read-tests will be executed * Add xID signals for cocotb compatability We tie ARID low in our manager * Fix prefix issue on cocotb axi test bench Prefixes should not contain trailing "_" * commit to repro 'make WAVES=1' cocotb error from axi-reads-calyx.futil * axi-reads patch * sync debug * Add txn_len initialization to 16 in calyx program * AXI Read fixed to get to read channel start Got rid of "assert_val" and "block_transfer" groups and instead perform these things inside "do_ar_transfer", this is required because we cant assert valid before we drive the data correctly, so needs to happen in parallel. Currently: This seems to write 16 times to same place, this is due to hardcoding of 16 in ar transfer, not sure why address doesn't increment this is tbd (and next TODO) * Add integer byte conversion for tests on Calyx AXI testharness * WIP get reads to work. Add incr_curr_addr group This is part of read channel control sequence * remove .fst from tracking * Add more data to testbench to make waveform viewing easier * Reads seem to be terminating correctly at RLAST * AR transfers seem to work, valid is high for 1 cycle * Unreduced axi-reads-calyx.futil Also reduces data bus width to 32 * Cocotb testbench now passes * Formatted and passing axi-read-tests * Reduce and comment axi-reads-calyx.futil * remove axi-reads.v from being tracked * add a todo * add required ARPROT signal. This is hardcoded to be priviliged * rename directories to yxi/axi-calyx * initial commit of axi-writes-calyx, a copy of axi-reads-calyx * WIP axi writes * rename directories * WIP imlpementing writes * add testing for writes, note makefile is overwritten so now tests writes, not reads * passing axi writes and testing * Work on full AXI wrapper, reads and compute works * cleaned up combined futil and tests * delete axi-reads* which is subsumed by axi-combined * add axi-combined-tests.py * remove axi-writes as it is subsumed by axi-combined * formatting * Update yxi/axi-calyx/axi-combined-calyx.futil Co-authored-by: Adrian Sampson <asampson@cs.cornell.edu> * formatting * add sim.sh which goes from calyx to running tests * add python file that enables waveform (vcd/fst) generation * formatting --------- Co-authored-by: Rachit Nigam <rachit.nigam12@gmail.com> Co-authored-by: Adrian Sampson <asampson@cs.cornell.edu>
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