Luke Kenneth Casson Leighton [Thu, 2 Jul 2020 21:37:21 +0000 (22:37 +0100)]
name function unit ALUs
Luke Kenneth Casson Leighton [Thu, 2 Jul 2020 19:58:27 +0000 (20:58 +0100)]
comment out DIV unit for now
Luke Kenneth Casson Leighton [Thu, 2 Jul 2020 19:22:32 +0000 (20:22 +0100)]
increase combinatorial stages to 8
Luke Kenneth Casson Leighton [Thu, 2 Jul 2020 19:17:07 +0000 (20:17 +0100)]
reduce DIV radix to 1
Luke Kenneth Casson Leighton [Thu, 2 Jul 2020 18:28:10 +0000 (19:28 +0100)]
add DIV function unit to compunits
Luke Kenneth Casson Leighton [Thu, 2 Jul 2020 17:59:16 +0000 (18:59 +0100)]
add trap function unit into compunits
Luke Kenneth Casson Leighton [Thu, 2 Jul 2020 17:36:51 +0000 (18:36 +0100)]
add bare wishbone option to TestIssuer, sort out ports
Luke Kenneth Casson Leighton [Thu, 2 Jul 2020 13:13:48 +0000 (14:13 +0100)]
use single-arg pspec for TestIssuer and Core
Luke Kenneth Casson Leighton [Thu, 2 Jul 2020 13:13:09 +0000 (14:13 +0100)]
first experimental index.rst for sphinx documentation
Luke Kenneth Casson Leighton [Thu, 2 Jul 2020 13:12:14 +0000 (14:12 +0100)]
add sphinx doc preliminary start
Cesar Strauss [Thu, 2 Jul 2020 08:55:59 +0000 (05:55 -0300)]
Present the ALU result only when valid_o is active
This should help to catch latching of invalid data.
Also, better demonstrates the valid / ready protocol.
Luke Kenneth Casson Leighton [Wed, 1 Jul 2020 19:41:23 +0000 (20:41 +0100)]
whoops missed some cases in unit test changing ALUHelpers
Luke Kenneth Casson Leighton [Wed, 1 Jul 2020 19:38:00 +0000 (20:38 +0100)]
minor reorg on how Bus and Config classes are set up
Luke Kenneth Casson Leighton [Wed, 1 Jul 2020 19:16:32 +0000 (20:16 +0100)]
whoops swapped trap test instructions accidentally
Luke Kenneth Casson Leighton [Wed, 1 Jul 2020 16:47:29 +0000 (17:47 +0100)]
print out msr for debug
Luke Kenneth Casson Leighton [Wed, 1 Jul 2020 16:41:16 +0000 (17:41 +0100)]
attempting to add SPRs to rfid test
Luke Kenneth Casson Leighton [Wed, 1 Jul 2020 16:14:47 +0000 (17:14 +0100)]
add OP_SC
Luke Kenneth Casson Leighton [Wed, 1 Jul 2020 15:51:10 +0000 (16:51 +0100)]
trap test check results
Luke Kenneth Casson Leighton [Wed, 1 Jul 2020 14:36:00 +0000 (15:36 +0100)]
add name "test_issuer" to ilang conversion
Luke Kenneth Casson Leighton [Wed, 1 Jul 2020 14:34:24 +0000 (15:34 +0100)]
add in trap compunit
Luke Kenneth Casson Leighton [Wed, 1 Jul 2020 14:32:15 +0000 (15:32 +0100)]
add rfid and td/tw trap test
Luke Kenneth Casson Leighton [Wed, 1 Jul 2020 12:37:32 +0000 (13:37 +0100)]
continue debugging trap pipeline
Luke Kenneth Casson Leighton [Wed, 1 Jul 2020 12:06:42 +0000 (13:06 +0100)]
debugging trap pipeline
Luke Kenneth Casson Leighton [Wed, 1 Jul 2020 11:21:46 +0000 (12:21 +0100)]
start running trap unit test, fixing errors
Luke Kenneth Casson Leighton [Tue, 30 Jun 2020 14:51:09 +0000 (15:51 +0100)]
add lte ltu for use by twi and other trap functions
Luke Kenneth Casson Leighton [Tue, 30 Jun 2020 11:31:42 +0000 (12:31 +0100)]
add in pseudocode keyword into mdwn isa files
Luke Kenneth Casson Leighton [Tue, 30 Jun 2020 10:57:00 +0000 (11:57 +0100)]
code-morph on div pipeline
Luke Kenneth Casson Leighton [Mon, 29 Jun 2020 21:20:41 +0000 (22:20 +0100)]
add README for fu directory
Luke Kenneth Casson Leighton [Mon, 29 Jun 2020 15:08:16 +0000 (16:08 +0100)]
use correct ALUHelpers in div test
Luke Kenneth Casson Leighton [Mon, 29 Jun 2020 15:03:56 +0000 (16:03 +0100)]
sort out syntax errors in div
Luke Kenneth Casson Leighton [Mon, 29 Jun 2020 15:03:46 +0000 (16:03 +0100)]
first unit test for div
Luke Kenneth Casson Leighton [Mon, 29 Jun 2020 14:38:20 +0000 (15:38 +0100)]
update submodule to fix div bug
Luke Kenneth Casson Leighton [Mon, 29 Jun 2020 14:03:59 +0000 (15:03 +0100)]
add ignore for parsetab.py
Luke Kenneth Casson Leighton [Mon, 29 Jun 2020 14:02:49 +0000 (15:02 +0100)]
add autogenerated do not commit comment
Luke Kenneth Casson Leighton [Mon, 29 Jun 2020 13:58:43 +0000 (14:58 +0100)]
update submodule to div overflow
Luke Kenneth Casson Leighton [Mon, 29 Jun 2020 13:40:49 +0000 (14:40 +0100)]
separate out divide by zero cases
Luke Kenneth Casson Leighton [Mon, 29 Jun 2020 13:39:27 +0000 (14:39 +0100)]
update OV and OV32 ISACaller flags if overflow occurs
Luke Kenneth Casson Leighton [Mon, 29 Jun 2020 13:29:27 +0000 (14:29 +0100)]
attempting to add overflow setting in ISACaller
Luke Kenneth Casson Leighton [Mon, 29 Jun 2020 12:28:08 +0000 (13:28 +0100)]
whoops, hex parser digits are in multiples of 4 bits
Luke Kenneth Casson Leighton [Mon, 29 Jun 2020 10:53:25 +0000 (11:53 +0100)]
fetch instructions from bare wishbone fetch unit
Cesar Strauss [Sun, 28 Jun 2020 22:17:31 +0000 (19:17 -0300)]
Start with a simpler test case
Leave other variants (immediate, rdmaskn) for later.
Cesar Strauss [Sun, 28 Jun 2020 21:38:03 +0000 (18:38 -0300)]
Let p.ready_o be active while the test ALU is idle
The valid/ready protocol doesn't actually forbid p.ready_o
being active while p.valid_i is inactive. It just mean that
the ALU is idle, and is ready to accept new data.
This should help avoiding potential combinatorial loops from
p.ready_o to p.valid_i.
Luke Kenneth Casson Leighton [Sun, 28 Jun 2020 21:41:18 +0000 (22:41 +0100)]
add cached fetch unit pass-through args
Luke Kenneth Casson Leighton [Sun, 28 Jun 2020 21:38:37 +0000 (22:38 +0100)]
need args to WishboneArbiter, match data width size
Cesar Strauss [Sun, 28 Jun 2020 20:44:10 +0000 (17:44 -0300)]
Add missing ports to the test ALU
Luke Kenneth Casson Leighton [Sun, 28 Jun 2020 20:14:52 +0000 (21:14 +0100)]
read from instruction memory using FetchUnitInterface
Luke Kenneth Casson Leighton [Sun, 28 Jun 2020 19:37:07 +0000 (20:37 +0100)]
add Config Fetch interface and quick unit test
Luke Kenneth Casson Leighton [Sun, 28 Jun 2020 19:21:23 +0000 (20:21 +0100)]
add test instruction memory
Luke Kenneth Casson Leighton [Sun, 28 Jun 2020 19:19:14 +0000 (20:19 +0100)]
add readonly option to TestMemory
Luke Kenneth Casson Leighton [Sun, 28 Jun 2020 17:23:08 +0000 (18:23 +0100)]
expand instruction bus width to 64 bit, start on a mini-cache
for instructions (one line)
Luke Kenneth Casson Leighton [Sun, 28 Jun 2020 16:20:15 +0000 (17:20 +0100)]
parameterise minerva i-cache
Luke Kenneth Casson Leighton [Sun, 28 Jun 2020 14:39:10 +0000 (15:39 +0100)]
got Pi2LSUI FSM working
Luke Kenneth Casson Leighton [Sun, 28 Jun 2020 12:17:09 +0000 (13:17 +0100)]
sram address do not cut by LSBs
Luke Kenneth Casson Leighton [Sun, 28 Jun 2020 11:03:24 +0000 (12:03 +0100)]
new Pi2LSUI working, using PortInterfaceBase
Luke Kenneth Casson Leighton [Sun, 28 Jun 2020 10:43:17 +0000 (11:43 +0100)]
start new version of Pi2LSUI based on PortInterfaceBase
Luke Kenneth Casson Leighton [Sun, 28 Jun 2020 10:24:30 +0000 (11:24 +0100)]
pass addr/mask through to PortInterfaceBase rd/wr addr
Luke Kenneth Casson Leighton [Sun, 28 Jun 2020 10:19:03 +0000 (11:19 +0100)]
cleanup (remove unneeded imports)
Luke Kenneth Casson Leighton [Sun, 28 Jun 2020 10:16:48 +0000 (11:16 +0100)]
more code-shuffle for TestMemoryPortInterface
Luke Kenneth Casson Leighton [Sun, 28 Jun 2020 10:13:24 +0000 (11:13 +0100)]
more code-shuffle for TestMemoryPortInterface
Luke Kenneth Casson Leighton [Sun, 28 Jun 2020 09:38:17 +0000 (10:38 +0100)]
minor cleanup, put get/set rdport/wrport into function
Luke Kenneth Casson Leighton [Sun, 28 Jun 2020 09:23:31 +0000 (10:23 +0100)]
merge LDSTPort into TestMemoryPortInterface
Luke Kenneth Casson Leighton [Sun, 28 Jun 2020 09:21:19 +0000 (10:21 +0100)]
use PortInterface connect_port
Luke Kenneth Casson Leighton [Sun, 28 Jun 2020 09:18:57 +0000 (10:18 +0100)]
use PortInterface connect_port
Luke Kenneth Casson Leighton [Sun, 28 Jun 2020 09:14:36 +0000 (10:14 +0100)]
attempt to get Pi2LSUI FSM working
Luke Kenneth Casson Leighton [Sat, 27 Jun 2020 20:35:27 +0000 (21:35 +0100)]
only activate ld_in_progress if addr is ok
Luke Kenneth Casson Leighton [Sat, 27 Jun 2020 19:21:12 +0000 (20:21 +0100)]
make Memory accessible via TestSRAMBareLoadStoreUnit
Luke Kenneth Casson Leighton [Sat, 27 Jun 2020 19:12:55 +0000 (20:12 +0100)]
increase (double) address width in TstL0CacheBuffer
Luke Kenneth Casson Leighton [Sat, 27 Jun 2020 19:12:02 +0000 (20:12 +0100)]
increase (double) address width in TstL0CacheBuffer
Luke Kenneth Casson Leighton [Sat, 27 Jun 2020 19:05:26 +0000 (20:05 +0100)]
unit test in l0_cache to connect to testpi and test_bare_wb
Luke Kenneth Casson Leighton [Sat, 27 Jun 2020 18:43:00 +0000 (19:43 +0100)]
make PortInterface modules consistent with same API
Luke Kenneth Casson Leighton [Sat, 27 Jun 2020 18:24:34 +0000 (19:24 +0100)]
use ConfigMemoryPortInterface in TstL0CacheBuffer
Luke Kenneth Casson Leighton [Sat, 27 Jun 2020 16:50:07 +0000 (17:50 +0100)]
fix TestMemLoadStoreUnit, it required a FSM to monitor write
and also needed to honour the "busy_o" signal
Luke Kenneth Casson Leighton [Sat, 27 Jun 2020 14:20:24 +0000 (15:20 +0100)]
add wishbone Pi2LSUI test
Luke Kenneth Casson Leighton [Sat, 27 Jun 2020 12:34:57 +0000 (13:34 +0100)]
reconfigureable PortInterface testing now possible
Luke Kenneth Casson Leighton [Fri, 26 Jun 2020 23:29:36 +0000 (00:29 +0100)]
name issue in Pi2LSUI
Luke Kenneth Casson Leighton [Fri, 26 Jun 2020 23:26:58 +0000 (00:26 +0100)]
whitespace and imports
Luke Kenneth Casson Leighton [Fri, 26 Jun 2020 23:25:17 +0000 (00:25 +0100)]
whitespace
Luke Kenneth Casson Leighton [Fri, 26 Jun 2020 22:40:08 +0000 (23:40 +0100)]
slight reorg on test_pi2ls.py
Luke Kenneth Casson Leighton [Fri, 26 Jun 2020 22:38:37 +0000 (23:38 +0100)]
correct address in pi2ls
Luke Kenneth Casson Leighton [Fri, 26 Jun 2020 22:22:37 +0000 (23:22 +0100)]
oops forgot to initialise base class of TestMemLoadStoreUnit
Luke Kenneth Casson Leighton [Fri, 26 Jun 2020 21:06:32 +0000 (22:06 +0100)]
add in LenExpand shift/mask
Luke Kenneth Casson Leighton [Fri, 26 Jun 2020 19:47:16 +0000 (20:47 +0100)]
add quick test showing Pi2LSUI not quite reading/writing to
correct addresses
Luke Kenneth Casson Leighton [Fri, 26 Jun 2020 19:40:52 +0000 (20:40 +0100)]
remove extraneous yields
Michael Nolan [Fri, 26 Jun 2020 19:36:41 +0000 (15:36 -0400)]
Modify pi2ls so it passes the portinterface unit tests
Luke Kenneth Casson Leighton [Fri, 26 Jun 2020 19:37:46 +0000 (20:37 +0100)]
set address ok and fix unit test to check it properly
Luke Kenneth Casson Leighton [Fri, 26 Jun 2020 19:30:18 +0000 (20:30 +0100)]
add pi.busy_o connection, increase to 64 bit
Luke Kenneth Casson Leighton [Fri, 26 Jun 2020 19:12:30 +0000 (20:12 +0100)]
unit test broken is ok :)
Luke Kenneth Casson Leighton [Fri, 26 Jun 2020 19:09:57 +0000 (20:09 +0100)]
set pi.ld.ok to 1 if pi.is_ld_i is set
Michael Nolan [Fri, 26 Jun 2020 18:58:54 +0000 (14:58 -0400)]
Move tests for pimem to new file, add ability to test pi2ls.py
Luke Kenneth Casson Leighton [Fri, 26 Jun 2020 18:00:07 +0000 (19:00 +0100)]
load/store unit test needed to wait for busy_o
otherwise, the bus was still processing the previous transaction
Luke Kenneth Casson Leighton [Fri, 26 Jun 2020 17:58:38 +0000 (18:58 +0100)]
whitespace
Luke Kenneth Casson Leighton [Fri, 26 Jun 2020 17:58:28 +0000 (18:58 +0100)]
clean up output from BareLoadStoreUnit
Luke Kenneth Casson Leighton [Fri, 26 Jun 2020 16:20:20 +0000 (17:20 +0100)]
halve the test memory size again
Luke Kenneth Casson Leighton [Fri, 26 Jun 2020 16:17:44 +0000 (17:17 +0100)]
shrink test memory size down to only 64 words
Luke Kenneth Casson Leighton [Fri, 26 Jun 2020 15:52:34 +0000 (16:52 +0100)]
investigating why write-enable not getting passed through
on nmigen_soc sram
Luke Kenneth Casson Leighton [Fri, 26 Jun 2020 13:35:23 +0000 (14:35 +0100)]
whoops forgot to call parent elaborate
Luke Kenneth Casson Leighton [Fri, 26 Jun 2020 13:24:51 +0000 (14:24 +0100)]
add test of SRAM through wishbone bus
Luke Kenneth Casson Leighton [Fri, 26 Jun 2020 12:14:47 +0000 (13:14 +0100)]
code-morph which redirects lsmem unit test through new ConfigLoadStoreUnit
this to allow wishbone-SRAM test version to be tested with the same
unit test
Luke Kenneth Casson Leighton [Fri, 26 Jun 2020 11:44:23 +0000 (12:44 +0100)]
add a test SRAM that lives behind a minerva LoadStoreUnitInterface
Luke Kenneth Casson Leighton [Fri, 26 Jun 2020 11:16:20 +0000 (12:16 +0100)]
dynamically specify wishbone layout (no longer hardcoded addr/data)