Github_Repos/cvw
1
0
Fork 1
mirror of https://github.com/openhwgroup/cvw synced 2025-02-11 06:05:49 +00:00
Code Issues Packages Projects Releases Wiki Activity
9,822 Commits 5 Branches 2 Tags 53 MiB
30cfac8568
Commit Graph

1567 Commits

Author SHA1 Message Date
Ross Thompson
e531b0103e Fixed wally64/32priv test hangup. 
The fix for the issue 203 had a lingering bug which did not suppress a bus access if the hptw short circuits on a pma/p fault.
 2023-04-05 23:13:45 -05:00
Kevin Thomas
d7188d6d9c Merge branch 'main' of https://github.com/openhwgroup/cvw 2023-04-05 17:43:43 -05:00
Ross Thompson
7cdd12a40a Merge pull request #206 from AlecVercruysse/coverage2 
i$ coverage improvements
 2023-04-05 17:29:35 -05:00
Alec Vercruysse
ac3569d75c Update ram1p1rwe (ce & we) coverage exlusion explanation 2023-04-05 14:54:58 -07:00
Kevin Thomas
4d30aff198 Formating white space 2023-04-05 15:30:55 -05:00
Kevin Thomas
5ac49fa31f Merge branch 'main' of https://github.com/openhwgroup/cvw 2023-04-05 15:04:12 -05:00
Ross Thompson
da9cf02ba0 Merge branch 'main' of https://github.com/openhwgroup/cvw 2023-04-05 14:55:12 -05:00
Alec Vercruysse
570e86afc3 Make CacheWay flush and dirty logic dependent on !READ_ONLY_CACHE 
To increase coverage. Read-only caches do not have flushes since
they do not have dirty bits.
 2023-04-05 11:48:18 -07:00
Alec Vercruysse
54df581ce6 make Cache Flush Logic dependent on !READ_ONLY_CACHE 
read-only caches do not have flush logic since they do not have to
deal with dirty bits.
 2023-04-05 11:48:18 -07:00
Alec Vercruysse
3419ef3651 remove ClearValid from cache 
The cachefsm hardwired ClearValid logic to zero.
This signal might've been added to potentially add extra functionality
later. Unless that functionality is added, however, it negatively
impacts coverage. If the goal is to maximize coverage, this signal
should be removed and only added when it becomes necessary.
 2023-04-05 11:48:18 -07:00
Alec Vercruysse
81125d3180 change i$ cachetagmem from ram1p1rwbe -> ram1p1rwe 
the byte write-enables were always tied high, so we can use
RAM without byte-enable to increase coverage.
 2023-04-05 11:48:18 -07:00
Alec Vercruysse
782feb6161 turn off ce coverage for ram1p1rwe 
According to the textbook, the cache memory chip enable,
`CacheEn`, is only lowered by the cachefsm with it is in the ready
state and a pipeline stall is asserted.

For read only caches, cache writes only occur in the state_write_line
state. So there is no way that a write would happen while the chip
enable is low.

Removing the chip-enable check from this memory to increase coverage
would be a bad idea since if anyone else uses this ram, the behaviour
would be differently than expected. Instead, I opted to turn off
coverage for this statement. Since this ram, which does not have a
byte enable, is used exclusively by read-only caches right now, this
should not mistakenly exclude coverage for other cases, such as D$.
 2023-04-05 11:48:18 -07:00
Alec Vercruysse
8b6b96012d add ram1p1rwe for read-only cache ways (remove byte-enable) 
- increases coverage
 2023-04-05 11:48:18 -07:00
Alec Vercruysse
2553321158 fix typo in cachway setValid input comment 2023-04-05 11:48:18 -07:00
Alec Vercruysse
9df246e5de put cacheLRU coverage explanation on another line 
the `: explanation` syntax was not working
 2023-04-05 11:48:18 -07:00
Alec Vercruysse
af113c7268 Exclude CacheLRU log2 function from coverage 2023-04-05 11:48:18 -07:00
Ross Thompson
394f2d65f2 Progress on bug 203. 2023-04-05 13:20:04 -05:00
Kevin Thomas
0c80067d45 Minor change with the IFU in the decompress module, in the compressed instruction truth table. 
The truth table is already fully covered, removed redundant last case checking
 2023-04-05 10:27:52 -05:00
David Harris
4552f9cf8c Fixed WFI to commit when an interrupt occurs 2023-04-04 09:32:26 -07:00
Ross Thompson
52d1c19509 Merge pull request #194 from davidharrishmc/dev 
Bit manipulation support in ImperasDV.  Test improvements.
 2023-04-04 09:13:27 -05:00
Kevin Kim
0a1adecf8a Merge branch 'openhwgroup:main' into zbc_optimize 2023-04-03 23:45:49 -07:00
Kevin Kim
acebdeeb81 reduced mux3 to mux2 for input signal to clmul 2023-04-03 22:53:46 -07:00
David Harris
64679654ff Merged priv.S edits 2023-04-03 18:07:14 -07:00
Sydeny
a0ecd83c47 Merge branch 'main' of https://github.com/openhwgroup/cvw into main 2023-04-03 13:41:55 -07:00
Ross Thompson
91e4e64f3d Merge pull request #178 from AlecVercruysse/coverage 
Improve I$ coverage by simplifying logic
 2023-04-03 14:22:46 -05:00
David Harris
4e2d80476e Merge branch 'main' of https://github.com/openhwgroup/cvw into dev 2023-04-03 06:13:16 -07:00
Sydeny
981e5bd5f6 Manual merge for fctrl.sv, fpu.S, and ifu.S files 2023-04-03 01:55:23 -07:00
Sydeny
17d41b4d52 Merge branch 'main' of https://github.com/openhwgroup/cvw into main 2023-04-03 01:54:27 -07:00
Sydney Riley
55655157ae expanded ifu coverage including 4 added directed tests and 1 exclusion, expanded fpu coverage including 6 directed tests and 2 multiline exclusions. 2023-04-02 23:51:34 -07:00
Kevin Kim
b38d34b925 Merge branch 'bitmanip_cleanup' of https://github.com/kipmacsaigoren/cvw into bitmanip_cleanup 2023-04-02 21:14:35 -07:00
Kevin Kim
8252706691 removed comparator flag to ALU 2023-04-02 21:14:31 -07:00
Kevin Kim
238e97d379 signal renaming on bitmanip alu and alu 2023-04-02 18:42:41 -07:00
Kevin Kim
f175f7e927 changed signal names on clmul and zbc to match book 2023-04-02 18:28:09 -07:00
David Harris
db542543cb Coverage improvement: ieu, hazard, priv 2023-03-31 08:34:34 -07:00
David Harris
fd0c9e973d Coverage improvements in ieu, hazard units 2023-03-31 08:33:46 -07:00
Marcus Mellor
fd08ff2e60 Merge branch 'main' of https://github.com/openhwgroup/cvw 2023-03-31 10:29:10 -05:00
Mike Thompson
9abfef7c39 Merge pull request #179 from davidharrishmc/dev 
Fixed broken regression: privileged tests and build root
 2023-03-31 10:56:27 -04:00
Marcus Mellor
219176db9b Merge branch 'main' of https://github.com/openhwgroup/cvw 2023-03-31 09:54:02 -05:00
Marcus Mellor
09b2cd304f Address comments in openhwgroup/cvw#180 2023-03-31 09:51:33 -05:00
Kevin Kim
2c6359b097 only pass in relevant comparator flag to ALU 2023-03-30 19:15:33 -07:00
Kevin Kim
1e88ec7eac Merge branch 'bitmanip_cleanup' of https://github.com/kipmacsaigoren/cvw into bitmanip_cleanup 2023-03-30 19:04:41 -07:00
Kevin Kim
27a5c9c5d6 Merge branch 'openhwgroup:main' into bitmanip_cleanup 2023-03-30 19:04:36 -07:00
Marcus Mellor
3afd963a9e Disable coverage for branches tested in fpu.s 2023-03-30 19:44:55 -05:00
David Harris
da53f240d3 Refactored InstrValidNotFlushed into CSR Write signals 2023-03-30 17:06:09 -07:00
David Harris
406bb22b6a Started factoring out InstrValidNotFlushed from CSRs 2023-03-30 14:56:19 -07:00
David Harris
f34218666a fctrl updated and buildroot working again 2023-03-30 13:17:15 -07:00
David Harris
9129c3ac22 fctrl continued cleanup 2023-03-30 13:07:39 -07:00
David Harris
01c5d58a64 fctrl continued cleanup 2023-03-30 13:05:56 -07:00
David Harris
b2a102ce79 Started to clean up fctrl 2023-03-30 12:57:14 -07:00
Alec Vercruysse
4b58bb55f2 Make entire cache write path conditional on READ_ONLY_CACHE 2023-03-30 10:32:40 -07:00
Kip Macsai-Goren
3805cf993a unnecessary comments cleanup 2023-03-29 19:32:57 -07:00
Kip Macsai-Goren
491ef14b71 Resolved ImperasDV receiving incorrect cause values 2023-03-29 15:04:56 -07:00
Alec Vercruysse
d507f85190 icache coverage improvements by simplifying logic 2023-03-29 13:04:00 -07:00
David Harris
9d8f9e4428 Reduced number of bits in mcause and medeleg registers 2023-03-29 07:02:09 -07:00
David Harris
59f825a54b Merge branch 'main' of https://github.com/openhwgroup/cvw into dev 2023-03-29 06:19:10 -07:00
David Harris
f2c24b869d Simplified fctrl 2023-03-28 21:13:48 -07:00
Alec Vercruysse
46df428e56 add check for legal funct3 for IW instructions 2023-03-28 15:59:48 -07:00
David Harris
92a7e86942 Merge branch 'main' of https://github.com/openhwgroup/cvw into dev 2023-03-28 14:33:18 -07:00
Ross Thompson
d0f8db7939 Merge branch 'main' of https://github.com/openhwgroup/cvw 2023-03-28 16:31:50 -05:00
David Harris
6849eeae0c Merge branch 'main' of https://github.com/openhwgroup/cvw into dev 2023-03-28 14:27:08 -07:00
Ross Thompson
366a96a0fc Possible fix for issue 148. 
I found the problem. We use a Committed(F/M) signal to indicate the IFU or LSU has an ongoing cache or bus transaction and should not be interrupted. At the time of the mret, the IFU is fetching uncacheable invalid instructions asserting CommittedF. As the IFU finishes the request it unstalls the pipeline but continues to assert CommittedF. (This is not necessary for the IFU). In the same cycle the LSU d cache misses. Because CommittedF is blocking the interrupt the d cache submits a cache line fetch to the EBU.

I am thinking out loud here. At it's core the Committed(F/M) ensure memory operations are atomic and caches don't get into inconsistent states. Once the memory operation is completed the LSU/IFU removes the stall but continues to hold Committed(F/M) because the memory operation has completed and it would be wrong to allow an interrupt to occur with a completed load/store. However this is not true of the IFU. If we lower CommittedF once the operation is complete then this problem is solved. The interrupt won't be masked and the LSU will flush the d cache miss.

This requires a minor change in the cachebusfsm and cachefsm. I will report back after I've confirmed this works.
 2023-03-28 14:47:08 -05:00
Kevin Kim
582c561cb1 comment formatting 2023-03-28 11:40:19 -07:00
Kevin Kim
926f3d2a5a Merge branch 'openhwgroup:main' into bitmanip_cleanup 2023-03-28 11:31:18 -07:00
David Harris
64bf9510ad Added support (untested) for half and quad conversions 2023-03-28 10:53:06 -07:00
David Harris
36a0d35ae5 fixed fp->fp conversions 2023-03-28 10:35:41 -07:00
David Harris
4e50cc3379 support more fp -> fp conversions 2023-03-28 10:28:01 -07:00
David Harris
074fd1d9c3 Fixed fmv decoder 2023-03-28 10:21:33 -07:00
Ross Thompson
e49cf8a028 Merge pull request #169 from davidharrishmc/dev 
PMP Fix to issue 132
 2023-03-28 11:49:00 -05:00
David Harris
2e5c50e24a Fixed RV32 tests after PMP fix 2023-03-28 08:35:23 -07:00
David Harris
e8904411ce Fixed PMP issue 132. Updated tests to initialize PMP before using. Needs to remake tests 2023-03-28 06:58:17 -07:00
David Harris
2e238c15aa CSRS privileged coverage test 2023-03-28 04:37:56 -07:00
Ross Thompson
d91188c86e Merge branch 'main' of https://github.com/openhwgroup/cvw 2023-03-27 11:55:19 -05:00
David Harris
9b7e5cec1f Removed unnecessary monitor 2023-03-27 09:52:38 -07:00
Ross Thompson
d9691c1542 Merge branch 'main' of https://github.com/openhwgroup/cvw 2023-03-27 10:22:48 -05:00
Lee Moore
4bb7dadc00 Merge branch 'openhwgroup:main' into add-linux 2023-03-27 09:44:13 +01:00
Kevin Kim
5d3260de63 removed unnecessary signal indices 2023-03-26 20:06:55 -07:00
Kevin Kim
f6ce03730a removed unneccesary input signal from zbb 2023-03-26 19:39:49 -07:00
Ross Thompson
ca4b058373 Modified plic and uart to remove async reset. This removes vivado critical warning. 2023-03-24 20:37:48 -05:00
Ross Thompson
0afba56927 Updated GPIO signal names to reflect book. 2023-03-24 18:55:43 -05:00
Ross Thompson
af8f1fd036 Renamed controllerinputstage to controllerinput to match book. 2023-03-24 17:57:02 -05:00
David Harris
0b0d954e7f Merged ross's spacing fixes 2023-03-24 15:47:26 -07:00
David Harris
092d34373f Merge pull request #159 from ross144/main 
Renamed signal to match book
 2023-03-24 15:34:59 -07:00
Ross Thompson
46b1bca4fc Fixed all tap/space issue in RTL. 2023-03-24 17:32:25 -05:00
Jacob Pease
2d0199a354 Added sdio_cd to vcu108 constraints. Removed SDC signals from uncore 2023-03-24 17:01:27 -05:00
Ross Thompson
b5a58502d0 Replaced tabs -> spaces cache. 2023-03-24 15:15:38 -05:00
Ross Thompson
b518177a45 Updated EBU to replace tabs with spaces. 2023-03-24 15:01:38 -05:00
Kevin Kim
b70ab0fa5a Zero/Sign extend mux in Shifter, Zero extend mux in Bitmanip alu 2023-03-24 11:52:51 -07:00
David Harris
4b9b20bce0 Shifter capitalization 2023-03-24 09:01:07 -07:00
Ross Thompson
47f8e847f0 Renamed ebu signal. 2023-03-24 10:51:04 -05:00
David Harris
89954df49b Query about CondExtA 2023-03-24 08:35:33 -07:00
David Harris
21424d0f86 Shifter sign simplification and capitalization 2023-03-24 08:27:30 -07:00
David Harris
cb261731f2 FPU detect illegal instructions 2023-03-24 08:12:32 -07:00
David Harris
f1e87c5e69 Start of EBU coverage tests 2023-03-24 08:12:02 -07:00
David Harris
576545e328 ALUControl Elimination 2023-03-24 08:10:48 -07:00
David Harris
f648be8ee2 Merged ALUOp into ALUControl to simplify ALU mux 2023-03-24 07:28:42 -07:00
David Harris
89479391ca Simplified rotate source to shifter 2023-03-24 06:49:26 -07:00
David Harris
e8d6073eca BMU simplifications 2023-03-24 06:18:06 -07:00
David Harris
3bdb176253 Merge branch 'main' of https://github.com/openhwgroup/cvw into dev 2023-03-24 05:59:48 -07:00
Kevin Kim
4c73f0fffd minor formatting 2023-03-23 22:28:21 -07:00
Kevin Kim
5a19934511 comments 2023-03-23 22:22:25 -07:00
Kevin Kim
ae162a2694 removed redundant signals 
-fixed some comments too
 2023-03-23 22:20:37 -07:00
Kevin Kim
9c457e3af4 bitmanip alu submodule passes lint and regression 2023-03-23 21:56:03 -07:00
Kevin Kim
443e64bef2 more progress. Failing regression 2023-03-23 20:42:49 -07:00
Kevin Kim
2a2aa0470a Merge branch 'openhwgroup:main' into bitmanip-alu 2023-03-23 19:53:50 -07:00
David Harris
c8ea5afe25 Removed unnecessary XZero from fdivsqrt 2023-03-23 17:25:59 -07:00
David Harris
f2864c7305 Merged BMU 2023-03-23 17:24:40 -07:00
Kevin Kim
8e67c64e2c fixed rori rv32 bug 2023-03-23 16:06:46 -07:00
Kevin Kim
51d691215f more progress on bitmanip alu modularization 2023-03-23 16:02:38 -07:00
David Harris
4e1bf6fbe0 Improved IEU and bitmanip test coverage 2023-03-23 14:24:41 -07:00
Kevin Kim
519a0452a5 started bitmanip alu modularization 2023-03-23 14:02:28 -07:00
David Harris
121d1cea62 Added csrwrites.S test case for privileged tests 2023-03-23 10:55:32 -07:00
Kevin Kim
a084b8ca31 Merge branch 'bit-manip' of https://github.com/kipmacsaigoren/cvw into bit-manip 2023-03-22 10:34:19 -07:00
Kevin Kim
fd00e386b5 remove outdated 2023-03-22 10:34:17 -07:00
Kevin Kim
1eb96e2221 Merge branch 'openhwgroup:main' into bit-manip 2023-03-22 10:33:15 -07:00
Kevin Kim
efa9f09864 updated header comments to indicate chapter 15 2023-03-22 10:31:21 -07:00
Kevin Kim
f7a915a71a remove helper python script 2023-03-22 10:27:59 -07:00
Kevin Kim
fce62fc213 formatting 2023-03-22 10:26:04 -07:00
Kevin Kim
e9f90050d5 min/max mux optimize 2023-03-22 10:25:54 -07:00
Kevin Kim
c8a5514ca5 formatting 2023-03-22 10:14:12 -07:00
eroom1966
259fbc8d77 support linux 2023-03-22 17:10:32 +00:00
David Harris
e03a533775 Select original compressed or uncompressed instruction for MTVAL on illegal instruction fault 2023-03-22 06:29:30 -07:00
David Harris
80fc851332 Fix Issue #142: SCOUNTEREN powers up at 1 instead of 0 2023-03-22 04:41:57 -07:00
David Harris
a1eccf37dc Fix Issue 145 2023-03-22 04:33:14 -07:00
Kevin Kim
3f46dff23e Merge branch 'main' of https://github.com/openhwgroup/cvw into bit-manip 2023-03-21 11:20:05 -07:00
David Harris
df9ce03252 Renamed intdivrestoring to div 2023-03-21 05:51:02 -07:00
David Harris
718844012e Renamed intdivrestoring to div 2023-03-20 16:22:06 -07:00
Kevin Kim
72a8b25272 formatting 2023-03-20 14:25:05 -07:00
Kevin Kim
2ad807728c more structural mux changes 2023-03-20 14:23:54 -07:00
Kevin Kim
4ecfa1bad3 added bitmanip 64 tests to updated regression script 
+ alu structural mux changes
 2023-03-20 14:19:39 -07:00
Kevin Kim
5056eb404c formatting 2023-03-20 13:09:49 -07:00
Kevin Kim
82d52f892b Merge branch 'main' of https://github.com/openhwgroup/cvw into bit-manip 2023-03-20 13:06:10 -07:00
David Harris
18737b58df formatting cleanup 2023-03-20 12:45:10 -07:00
Kevin Kim
b394e343f6 format + min/max structural mux 2023-03-20 09:37:57 -07:00
David Harris
cd0240d938 Eliminate transitions to FLUSH and WRITEBACK in cachefsm for READ_ONLY_CACHE 2023-03-19 10:41:47 -07:00
David Harris
4c6f539449 Removed flq from LLEN=64 2023-03-19 10:25:04 -07:00
David Harris
ff22520d9e Added comments about PMP checker fixes when test cases will be ready to initialize PMP before entering user mode 2023-03-19 05:46:34 -07:00
David Harris
4cde207958 Fix Issue #120 about SIE/SIP being 0 unless MIDELEG bits are set. However, this fix breaks the wally32/64priv tests in regression. 2023-03-18 10:10:58 -07:00
David Harris
f53b2f6e1f Merge branch 'main' of https://github.com/openhwgroup/cvw into dev 2023-03-18 09:24:37 -07:00
David Harris
6922298f21 Replaced FenceM with InvalidateICacheM for event counting of fence.i 2023-03-18 09:24:31 -07:00
Ross Thompson
3d37d2769a Book updates. 2023-03-14 13:09:50 -05:00
Ross Thompson
3cae6ca90f Updated NextAdr to NextSet. 2023-03-13 14:54:13 -05:00
Ross Thompson
c190444fa2 Updated CAdr to CacheSet. 2023-03-13 14:53:00 -05:00
Ross Thompson
ada099c58b Changes BTA to BPBTA. 2023-03-12 14:36:46 -05:00
Ross Thompson
a5523400ae Replaced DCACHE parameter with READ_ONLY_CACHE as the name was confusing in chapter 10. 2023-03-12 13:21:22 -05:00
Kevin Kim
0d0d3b981e more checks in bitmanip decode 2023-03-10 17:17:24 -08:00
Kevin Kim
9b4f3219db formatting 2023-03-10 14:32:01 -08:00
Kevin Kim
c380b0816d removed redundant convinvb signal 2023-03-10 14:18:24 -08:00
Kevin Kim
dcaf9de228 removed redundant condinvb mux 2023-03-10 14:17:38 -08:00
David Harris
f411803bc4 Merge branch 'main' of https://github.com/openhwgroup/cvw into dev 2023-03-10 12:47:30 -08:00
David Harris
33fa7e4706 Simplified SLT and SLTU code in ALU 2023-03-09 15:14:52 -08:00
Kevin Kim
f29e8932a2 more comprehensive illegal b instr. check 2023-03-09 12:44:51 -08:00
Kevin Kim
f335d08bbf fixed bmu bug 
- accidentally deleted count instruction decode
 2023-03-09 12:35:42 -08:00
Ross Thompson
68b437ce92 Merge branch 'main' of https://github.com/openhwgroup/cvw 2023-03-09 13:29:38 -06:00
Kevin Kim
260dcc8b96 Merge branch 'bit-manip' of https://github.com/kipmacsaigoren/cvw into bit-manip 2023-03-08 16:22:47 -08:00
Kevin Kim
7002221dec cleaner bmu decode logic 2023-03-08 16:22:43 -08:00
Ross Thompson
4db17cde2f Updated testbench to record coremark performance counters. 
Added comment about mtval probably not being correct for compressed instructions.
 2023-03-08 17:11:27 -06:00
kipmacsaigoren
2337e2ae16 Merge branch 'openhwgroup:main' into bit-manip 2023-03-07 21:29:03 -08:00
David Harris
88c3a61cd7 Merge branch 'main' of https://github.com/openhwgroup/cvw into dev 2023-03-07 14:49:23 -08:00
Kevin Kim
0ca530fffd Merge branch 'bit-manip' into illegal_specific 2023-03-07 14:07:59 -08:00
Kevin Kim
f29bbe5f69 Merge branch 'openhwgroup:main' into illegal_specific 2023-03-07 14:06:22 -08:00
Kevin Kim
4bb43892f9 alu formatting 2023-03-07 14:01:47 -08:00
Kevin Kim
26cb1857f3 specifc instruction handling for B's 
- Added BALUSrcBD, BaseALUSrcB for distinguishing between base instruction I/IW and Bitmanip instruction I/IW
 2023-03-07 13:58:08 -08:00
kipmacsaigoren
24f0f34aff Merge branch 'openhwgroup:main' into priv-tests 2023-03-07 13:46:55 -08:00
Kip Macsai-Goren
f28a284e5e Merge remote-tracking branch 'upstream/main' into bit-manip 2023-03-07 13:45:04 -08:00
Kip Macsai-Goren
2ec3c741ef Merge branch 'bit-manip' of github.com:kipmacsaigoren/cvw into bit-manip 2023-03-07 13:44:51 -08:00
Kip Macsai-Goren
f178c90c02 Merge branch 'main' of github.com:kipmacsaigoren/cvw into bit-manip 2023-03-07 13:44:19 -08:00
Kevin Kim
bd9b9970f5 Merge remote-tracking branch 'origin' into illegal_specific 2023-03-07 11:30:36 -08:00
Kevin Kim
6d146a7e20 formatting 2023-03-07 10:57:52 -08:00
Kevin Kim
833e7bd2af shifter sign generation logic optimize 2023-03-07 10:57:06 -08:00
David Harris
77ba71be71 editorconfig to specify tabs/spaces. Fixed some tabs. Turn off coverage to speed up simulation 2023-03-07 06:31:40 -08:00
Kevin Kim
81198ce6f6 reverted backing to working version 2023-03-07 00:29:58 -08:00
Kevin Kim
5637897dce reverted to working version 2023-03-07 00:28:07 -08:00
Ross Thompson
6d4e28fdf2 Merge branch 'main' of https://github.com/openhwgroup/cvw 2023-03-06 22:29:27 -06:00
Ross Thompson
e448cd54ef Merge branch 'main' of https://github.com/openhwgroup/cvw 2023-03-06 18:39:15 -06:00
Ross Thompson
a6b851a672 Renamed signals to be consistent with textbook. 2023-03-06 18:29:31 -06:00
Ross Thompson
31fcc0daf7 Renamed PCFSpill to PCSpillF. 2023-03-06 17:50:57 -06:00
Ross Thompson
473ed2b475 Renamed InstrFirstHalf to InstrFirstHalfF. 2023-03-06 17:48:57 -06:00
Ross Thompson
fdfb80a818 Renamed ebuarbfsm to ebufsmarb to match figures. 2023-03-06 17:47:55 -06:00
David Harris
7ecf4cdea8 Fixed bug about rv64 shifts only using 6 bits of funct7 2023-03-06 13:10:51 -08:00
David Harris
7e0c96cdcc Simplified decoder default to illegal instruction 2023-03-06 11:21:11 -08:00
David Harris
c2efdbdbbb More detailed decoding of load/store/branch/jump 2023-03-06 11:15:48 -08:00
David Harris
a56557d847 Improved decoding illegal instructions in controller 2023-03-06 11:02:42 -08:00
Kevin Kim
c7d1e35d4a structural changes in cnt.sv 2023-03-06 06:44:15 -08:00
Kevin Kim
e67b02136c formatting 2023-03-06 06:20:25 -08:00
Kevin Kim
ee66b5fb4a formatting 
- reverted back to ALUResult signal in alu.sv
 2023-03-06 06:19:01 -08:00
Kevin Kim
8f3acedec8 formatted files 2023-03-06 05:52:08 -08:00
Kevin Kim
fb529e1640 updated license header 2023-03-06 05:41:53 -08:00
Kevin Kim
e80c1248a2 bug fix 2023-03-05 15:20:48 -08:00
Kevin Kim
3dbdf3d579 extend unit structural mux 2023-03-05 15:09:02 -08:00
Kevin Kim
696cfb6949 zbb result select mux structural 2023-03-05 14:57:30 -08:00
Kevin Kim
2ae32f75b5 zbc input mux structural 2023-03-05 14:26:31 -08:00
Kevin Kim
77d8f10574 revA signals to cnt, zbb 2023-03-05 14:26:24 -08:00
Kevin Kim
7836bc1e37 ALU changes 
- added PreShiftAmt signal for shadd
- condinvB now muxes from B instead of mask
 2023-03-05 14:06:24 -08:00
Kevin Kim
0f2360f0d7 bug in bctrl 
- deleted the min/minu decoding for some reason.
 2023-03-04 23:56:33 -08:00
Kevin Kim
6b25c64a1f BSelect from OH encoding to Binary 2023-03-04 23:19:31 -08:00
Kevin Kim
a293c350ba alu pre-shift 
-changed ALU pre shift logic to use a 2 bit shifter instead of mux
 2023-03-04 23:07:06 -08:00
Kevin Kim
7512e55699 added python script 
-I've been using this python script to make quick changes to the bitmanip controller
 2023-03-04 22:54:32 -08:00
Kevin Kim
294e024c9b Merge branch 'bit-manip' of https://github.com/kipmacsaigoren/cvw into bit-manip 2023-03-04 22:44:09 -08:00
Kevin Kim
9494cf9340 removed rotate signal in datapath and instead packed into the new BALUControl Signal 
- BALUControl contains Rotate, Mask, PreShift signals to select from the respective generation muxes in the ALU
 2023-03-04 22:44:03 -08:00
Kip Macsai-Goren
a38f7cc8a1 added reset values to stime and stimecmp registers 2023-03-04 15:06:15 -08:00
Kip Macsai-Goren
4cede344a1 Merge remote-tracking branch 'upstream/main' into bit-manip 2023-03-04 14:43:12 -08:00
Kevin Kim
f5dca0bf4f zbc result mux is now structural 2023-03-04 09:22:21 -08:00
Kevin Kim
72de867e65 Rotate signal now gets generated in bmu ctrl 2023-03-03 22:57:49 -08:00
Kevin Kim
b315066b03 license comments 2023-03-03 21:52:34 -08:00
Kevin Kim
0403cfd41a removed redundant signals in controller 2023-03-03 21:52:25 -08:00
Kevin Kim
8dd39fbcfb b controller generates comparison signed flag and controller branch signed logic updated accordingly 2023-03-03 17:12:29 -08:00
Ross Thompson
da74ed0369 Merge pull request #126 from davidharrishmc/dev 
ImperasDV setup
 2023-03-03 18:01:32 -06:00
David Harris
876c33da5f Merge branch 'main' of https://github.com/openhwgroup/cvw into dev 2023-03-03 15:54:42 -08:00
Kevin Kim
5e01f86bc5 sltD signal debug. Passes regression 2023-03-03 12:44:33 -08:00
Kevin Kim
c836eea17c sltD logic optimize 2023-03-03 12:35:40 -08:00
Kevin Kim
d6f8c1dd29 Merge branch 'bctrlmigrate' of https://github.com/kipmacsaigoren/cvw into bctrlmigrate 2023-03-03 09:54:08 -08:00
Kevin Kim
1c55d4a8d5 Merge branch 'openhwgroup:main' into bctrlmigrate 2023-03-03 09:53:59 -08:00
Kevin Kim
422b428cba removed outdated b-signals in controller 2023-03-03 08:45:42 -08:00
Kevin Kim
9cad890c1a comments to bctrl 2023-03-03 08:41:47 -08:00
Kevin Kim
19410b4196 migrated B-subarith logic into b controller 2023-03-03 08:40:29 -08:00
Kevin Kim
2c3271dd62 began subarith configurability optimization in controller 2023-03-03 08:27:11 -08:00
Ross Thompson
0cb5369351 Renamed BTB misprediction to BTA. 2023-03-03 00:18:34 -06:00
Ross Thompson
5b5677ccb8 Added divide cycle counter. 2023-03-02 23:59:52 -06:00
Ross Thompson
aabb454d1c Added the i and d cache cycle counters. 2023-03-02 23:54:56 -06:00
Ross Thompson
cfca77172e Added fence counter. 2023-03-02 23:29:20 -06:00
Ross Thompson
f32f8c109a Added csr write counter, sfence vma counter, interrupt counter, and exception counter. 2023-03-02 23:21:29 -06:00
Ross Thompson
a313b10912 Added store stall to performance counters. 2023-03-02 23:10:54 -06:00
Ross Thompson
2dd693a3b3 Reordered performance counters and added space for new ones. 2023-03-02 23:04:31 -06:00
David Harris
316b8b2250 Refactored Floating point division special case detection to avoid spurious trigger on Y for sqrt) 2023-03-02 20:00:47 -08:00
Kevin Kim
b21ca2fba0 bug fix, more elegant logic changes in controller 2023-03-02 16:00:56 -08:00
Kevin Kim
c9bd37c92b formatting 2023-03-02 15:28:43 -08:00
Kevin Kim
910eeea3ff removed main instruction decoder dependence on bmu controller 2023-03-02 15:28:33 -08:00
Kevin Kim
05b329dd6a added bitmanip illegal instruction signal 2023-03-02 15:09:55 -08:00
Kevin Kim
3e8e633a56 zbc comments 2023-03-02 13:52:00 -08:00
Kevin Kim
b0307f5082 formatted bmu decoder 2023-03-02 13:45:15 -08:00
Kevin Kim
24b0b83d52 moved ALUControlD into configurable block 2023-03-02 12:17:03 -08:00
Kevin Kim
0f60505179 moved SubArith and RegWriteE into configurable block 2023-03-02 12:15:57 -08:00
Kevin Kim
b81a5e4452 added BRegWriteE signal 2023-03-02 12:15:22 -08:00
Kevin Kim
5e10720bed rename shifternew to shifter 2023-03-02 11:45:32 -08:00
Kevin Kim
cf324510f3 zbc input select mux optimize 2023-03-02 11:43:05 -08:00
Kevin Kim
657719220a zbc select mux optimization 2023-03-02 11:40:29 -08:00
Kevin Kim
e62a752522 fixed controller lint, changed byte unit mux select name and input width 2023-03-02 11:36:12 -08:00
Kevin Kim
a5e2e24320 removed redundant zbs 2023-03-02 11:22:09 -08:00
Ross Thompson
b98e007a53 Cleaned up branch predictor performance counters. 2023-03-01 17:05:42 -06:00
David Harris
5c8c50adba Merge branch 'main' of https://github.com/openhwgroup/cvw into dev 2023-03-01 11:18:05 -08:00
David Harris
23775c6d67 Renamed I/D TLBMissOrDAFault to TLBMissOrUpdateDA for consistency with UpdateDA 2023-03-01 11:18:00 -08:00
Ross Thompson
90b2f0a652 Set bp to use instruction class prediction by default. 2023-03-01 11:52:42 -06:00
Ross Thompson
dea6b643a6 Branch predictor cleanup. 
I think Ch 10 is now done except for BTB performance analysis and the section on running benchmarks and collecting data.
 2023-03-01 11:24:24 -06:00
Ross Thompson
03a6679ba0 More btb cleanup. 2023-03-01 10:47:00 -06:00
Ross Thompson
554e7d0973 Minor fix to btb. 2023-03-01 10:45:40 -06:00
Ross Thompson
a6917d07f3 Name cleanup. 2023-02-28 17:48:58 -06:00
Kip Macsai-Goren
58ab6ec805 Merge remote-tracking branch 'upstream/main' into bit-manip 2023-02-28 14:41:51 -08:00
Kip Macsai-Goren
f63748f097 Merge remote-tracking branch 'origin' into bit-manip 2023-02-28 14:39:57 -08:00
Ross Thompson
4c0e7f297a Found the performance bug with the branch predictor btb power saving update. 2023-02-28 15:57:34 -06:00
Ross Thompson
2ebe600f54 Name changes to reflect diagrams. 2023-02-28 15:37:25 -06:00
Ross Thompson
be4823f7dd Undid the btb update as it reduces performance. 2023-02-28 15:21:56 -06:00
Kevin Kim
df0d75034b bitmanip decoder spits out regwrite, w64, and aluop signals [NEEDS DEBUG] 2023-02-28 12:09:35 -08:00
Kevin Kim
b61d881c1b added BRegWrite, BW64, BALUOp signals to bctrl and controller 
-TODO: Main decode in bmuctrl must assert these 3 signals
 2023-02-28 11:54:10 -08:00
Kevin Kim
692e406976 changed shifter source select signal name 2023-02-28 11:41:40 -08:00
Kevin Kim
1506d50c63 rename result back to ALUResult in ALU 2023-02-28 07:27:34 -08:00
Ross Thompson
9dd3379744 This icpred and btb changes are causing a performance issue. 2023-02-27 20:00:50 -06:00
Ross Thompson
544abe2819 Modified the BTB to save power by not updating when the prediction is unchanged. 2023-02-27 17:37:29 -06:00
Ross Thompson
bc5aecf948 Merge branch 'main' of https://github.com/openhwgroup/cvw 2023-02-27 09:48:03 -06:00
David Harris
cf8b5f0783 Added support for ZMMUL 2023-02-27 07:29:53 -08:00
Ross Thompson
318189e5e6 Signal name changes. 2023-02-27 00:39:19 -06:00
David Harris
f40352e82b hptw typo fix 2023-02-26 19:38:34 -08:00
Ross Thompson
c89812b2d4 Branch predictor cleanup. 2023-02-26 21:28:36 -06:00
David Harris
e9ad6ae057 Simplified Access fault logic in HPTW 2023-02-26 18:50:37 -08:00
David Harris
2d7145901b StoreAmo faults are generated instead of load faults on AMO operations 2023-02-26 18:35:10 -08:00
Ross Thompson
e8c5e5b5ff Create module for instruction class prediction and decoding. 2023-02-26 20:20:30 -06:00
Ross Thompson
3964ce3309 Merge branch 'main' of https://github.com/openhwgroup/cvw into main 2023-02-26 19:58:24 -06:00
David Harris
21b28fd1bb Renamed DAPageFault to UpdateDA 2023-02-26 17:51:45 -08:00
David Harris
4274071333 renamed UpperBitsUnequalPageFault to UpperBitsUnequal 2023-02-26 17:32:34 -08:00
David Harris
06bd4783af moved tlb to subdirectory 2023-02-26 17:31:03 -08:00
David Harris
c774b44116 Moved TLB into subdirectory of MMU 2023-02-26 17:28:05 -08:00
Ross Thompson
72be4318b8 Merge branch 'main' of https://github.com/openhwgroup/cvw into main 2023-02-26 12:06:06 -06:00
David Harris
dc447ed5ed Removed unneeded TLBFlush from TLBMiss 2023-02-26 10:04:16 -08:00
David Harris
54b8e7c629 Access faults are geted by ~TLBMiss rather than ~(Translate & ~TLBHit) 2023-02-26 09:58:34 -08:00
David Harris
35653a18b7 Renamed HPTW_WRITES_SUPPORTED to SVADU_SUPPORTED 2023-02-26 09:38:32 -08:00
David Harris
f31764c3e1 Renamed DAPageFault to HPTWDAPageFault in hptw to avoid name conflict with DAPageFault from tlbcontrol 2023-02-26 07:12:43 -08:00
David Harris
fe161f6bde Fixed missing assign when SSTC is not supported 2023-02-26 07:12:13 -08:00
David Harris
8895114152 Fixed SSTC being unusable in M-MODE without Status.TM. Disable STIMECMP registers when SSTC_SUPPORTED = 0 2023-02-26 06:30:43 -08:00
Ross Thompson
7f8034013d PHT was enabled using the wrong ~flush and ~stall. 2023-02-24 22:57:32 -06:00
Ross Thompson
eb9dc7e67d gshare cleanup. 2023-02-24 22:55:51 -06:00
Ross Thompson
9df05f0b3d More signal renames. 2023-02-24 19:56:55 -06:00
Ross Thompson
8bd4a4c35b Renamed signals to match new figures. 2023-02-24 19:51:47 -06:00
Kevin Kim
f5d3e0e8a0 removed old shifter 2023-02-24 17:33:47 -08:00
Ross Thompson
f95f326b3d Renamed signals to match figure 10.18. 2023-02-24 19:22:14 -06:00
Kevin Kim
601c6fcdc4 removed now-redundant zero-extend mux in alu 2023-02-24 17:14:12 -08:00
Kevin Kim
1d4200e3a3 took sign extension out of shifter 2023-02-24 17:09:56 -08:00
Ross Thompson
40a164a8da Merge branch 'main' of https://github.com/openhwgroup/cvw 2023-02-24 18:50:35 -06:00
Ross Thompson
4031b89f18 Possible fix to btb performance issue. 2023-02-24 18:36:41 -06:00
Ross Thompson
ea8cb7dd78 Cleanup. 2023-02-24 18:20:42 -06:00
Ross Thompson
a14dcaa241 Completed critical path gshare fix. 2023-02-24 18:02:00 -06:00
Ross Thompson
31d6531af2 Prep to fix gshare critical path. 2023-02-24 17:54:48 -06:00
Ross Thompson
5db56460b9 Modified btb forwarding logic to reduce critical path. 2023-02-24 17:47:43 -06:00
Kevin Kim
00a0170b30 optimized mux to shifter, passes rv32/64i 2023-02-24 12:09:34 -08:00
Kip Macsai-Goren
f77d8206ec Merge remote-tracking branch 'upstream/main' into bit-manip 2023-02-24 09:28:24 -08:00
David Harris
adfc01fc5a Fixed special cases of address decoder and documented better 2023-02-24 07:52:46 -08:00
Kevin Kim
8b6d699857 small optimization to condzext select 2023-02-23 21:57:28 -08:00
Ross Thompson
2920179435 Major cleanup of bp. 2023-02-23 16:19:03 -06:00
Ross Thompson
fa49de8391 Partial replacement of InstrClassX with {JalX, RetX, JumpX, and BranchX}. 2023-02-23 15:55:34 -06:00
Kip Macsai-Goren
cb3990c77d Merge remote-tracking branch 'upstream/main' into main 2023-02-23 13:33:45 -08:00
Ross Thompson
8503982328 Branch predictor cleanup. 2023-02-23 15:15:14 -06:00
Ross Thompson
403b2b7be1 Moved more branch predictor logic into the performance counter block. 2023-02-23 15:14:56 -06:00
Ross Thompson
526f046fb0 Added if generate around bp logic only used with performance counters. 2023-02-23 14:39:31 -06:00
Ross Thompson
2d919fa9e3 Renamed PCPredX to BTAX. 2023-02-23 14:33:32 -06:00
Kip Macsai-Goren
67f83cda7f Fixed lint errors on zero and pop count. All of regression passes 2023-02-22 20:25:51 -08:00
Kip Macsai-Goren
ba3bfdf68b Manual attempt to merge with upstream changes 2023-02-22 19:42:30 -08:00
Kip Macsai-Goren
cc47bd8bea Merge remote-tracking branch 'upstream/main' into main 2023-02-22 15:47:54 -08:00
Ross Thompson
c736d7c1f3 Fixed bug in basic gshare. 2023-02-22 12:54:46 -06:00
Ross Thompson
849856034b Merge branch 'main' of https://github.com/openhwgroup/cvw 2023-02-22 09:11:57 -06:00
Ross Thompson
5dde3af22e Oups. Turns out dc_shell does not like string parameters. 
Switched gshare to use an integer parameter to select between gshare and global.
 2023-02-22 09:11:46 -06:00
Kip Macsai-Goren
d668c563f4 Merge remote-tracking branch 'upstream/main' into main 2023-02-21 14:48:41 -08:00
Kevin Kim
35bd4f7219 added individual zb tests in tests.vh and testbench 
- also minor alu/controller configurability changes
 2023-02-21 11:52:05 -08:00
David Harris
f0566173e6 Merge branch 'main' of https://github.com/openhwgroup/cvw into dev 2023-02-21 09:58:18 -08:00
David Harris
b59df0fca7 Fixed Issue #65 fmv sign selection. Sign needs to come from most significant bit of raw X source without doing NaN Box fixes first. 2023-02-21 09:57:57 -08:00
David Harris
a445e53e8d Fixed Issue #106: fld rasies load access fault instead of illegal instruction. The IEU controller had considered all fp loads and stores to be legal regardless of whether the FPU is enabled or the type is supported. Merged illegal instruction detection from both units into the Decode stage, saving two bits of pipeline register as well. 2023-02-21 09:32:17 -08:00
Ross Thompson
7f0d64d0a6 Fixed typo in the global branch predictor. 2023-02-20 18:48:02 -06:00
Ross Thompson
2c2c1b5221 Cleanup branch predictor files. 2023-02-20 18:45:45 -06:00
Ross Thompson
7df3a84060 Renamed branch predictors and consolidated global and gshare predictors. 2023-02-20 18:42:37 -06:00
Ross Thompson
6eefa5b1e3 Fixed another bug in the btb. 2023-02-20 17:54:22 -06:00
Ross Thompson
d2b7047744 Fixed forwarding bug in the BTB. 2023-02-20 17:03:45 -06:00
Ross Thompson
fdd007a903 Found a bug where the d and i cache misses were not recorded in the performance counters. 2023-02-20 16:00:29 -06:00
Ross Thompson
545af7697f Simiplified BTB. 2023-02-20 15:39:42 -06:00
David Harris
1028fd1053 Removed test code that broke LSU 2023-02-20 12:42:46 -08:00
David Harris
da61d11de1 Merge branch 'main' of https://github.com/openhwgroup/cvw into dev 2023-02-20 11:28:15 -08:00
David Harris
36b2d530c4 Merge pull request #98 from ross144/main 
New gshare implementation
 2023-02-20 11:27:47 -08:00
David Harris
801f4a68b7 Extraction script updates to match new reports names 2023-02-20 10:16:45 -08:00
David Harris
4cc8448b16 Removed unused and incomplete ROM macro instantations 2023-02-20 05:59:57 -08:00
David Harris
626715befd Fixed IROM size parameters 2023-02-20 05:32:43 -08:00
David Harris
472c7da399 New expression for BTB_SIZE to avoid error during sky90 synthesis 2023-02-20 04:02:00 -08:00
Ross Thompson
4db249ca5d Simplified BTB by removing the valid bit. the instruction class provides the equivalent information. 2023-02-19 23:53:20 -06:00
Ross Thompson
407d9e7b4a Merge branch 'main' of https://github.com/openhwgroup/cvw 2023-02-19 22:54:27 -06:00
Ross Thompson
0f98cfe5b4 Simplified branch predictor. 2023-02-19 22:49:48 -06:00
David Harris
d07c6386b2 Added BTB_SIZE parameter independent of BPRED_SIIZE 2023-02-19 20:13:50 -08:00
David Harris
20ced0653c Parameterized btb to depend on BPRED_SIZE 2023-02-19 19:59:07 -08:00
Kip Macsai-Goren
65a5b86dd8 Merge remote-tracking branch 'upstream/main' into main 2023-02-19 16:37:18 -08:00
David Harris
5287c54278 Adjusted DTIM to always be 512B independent of XLEN 2023-02-19 16:14:38 -08:00
David Harris
00d54cfe6c PMP checker size check to avoid spurious warnings 2023-02-19 16:08:23 -08:00
David Harris
fa0406b554 Moved conditional instantiation outside pmpchecker 2023-02-19 15:31:00 -08:00
David Harris
8db49c83c4 Disabled W64M register for RV32 2023-02-19 07:03:31 -08:00
David Harris
527566c38a Fixed RAM instantiations 2023-02-19 06:31:41 -08:00
Ross Thompson
89aa57e25e Possibly much better branch predictor implemention. 
The complexity is significantly reduced.
 2023-02-19 00:17:37 -06:00
Kevin Kim
0f876c3111 B DONE (for now) 
- datapath passes along comparator flag to alu
-  controllers and zbb handle min/max instructions
 2023-02-18 22:12:55 -08:00
Ross Thompson
9f997eb5d0 Minor fix. 2023-02-18 23:55:46 -06:00
Kevin Kim
2319661b10 controlleres and zbb handle byte instructions 2023-02-18 21:06:55 -08:00
Kevin Kim
e7339902ae alu and controllers handle andn, orn, xnor 2023-02-18 20:57:07 -08:00
Kevin Kim
59e9c7c747 added logic to handle sign/zero extend instructions 2023-02-18 20:32:40 -08:00
Kevin Kim
ad63699aac fixed ctlzw bug in count unit 2023-02-18 20:12:30 -08:00
Kevin Kim
ecfcad20a0 zbb handles count instructions 2023-02-18 20:12:17 -08:00
Kevin Kim
543dc1e36a fixed bmuctrl decode bug 2023-02-18 20:11:50 -08:00
Kevin Kim
446327215d updated comments in bmuctrl 2023-02-18 19:57:10 -08:00
Kevin Kim
baff2c9362 rotate instructions now handled in ZBB unit 2023-02-18 19:56:54 -08:00
Kevin Kim
e4085764e7 removed redundant decode logic in bmuctrl 2023-02-18 19:50:36 -08:00
Kevin Kim
f18cd53dee began ZBB integration into ieu 2023-02-18 19:44:14 -08:00
Kevin Kim
5f56f72bb1 bmuctrl handles roriw 2023-02-18 16:26:16 -08:00
Kip Macsai-Goren
9c3aa55349 merge upstream synth changes 2023-02-18 14:35:19 -08:00
David Harris
92d4acf118 Removed unused PredInstrClassE register from bpred 2023-02-18 05:59:25 -08:00
David Harris
1af99c7aee Removed unused weq0M register fron fdivsqrtpostproc 2023-02-18 05:57:39 -08:00
David Harris
adc22235be Fixed issue #57 of sign selection for improperly NaN-boxed number 2023-02-18 05:34:40 -08:00
David Harris
7923d32c3a Fixed unpacking of illegal NaN box. Fixed issue #56 of sign injection NaN 2023-02-18 05:25:38 -08:00
Kevin Kim
2ccbde9d09 configured shifter in alu 2023-02-17 21:58:49 -08:00
Kevin Kim
f85c1058ff shifter bug fix 
- roli not passing unless I keep the MSB (instead of inverting) of truncated offset
 2023-02-17 21:58:26 -08:00
Kevin Kim
77fc40149f controller supports some rotates 2023-02-17 21:57:34 -08:00
Kevin Kim
5e7ed8804f bmuctrl supports some rotates 2023-02-17 21:57:19 -08:00
David Harris
63a6567ed3 Created PostBox signal to NaN-box malformed NaNs of excess length. Fixes Issue #55 2023-02-17 20:51:43 -08:00
Kevin Kim
9af0ffe3a9 added zero extend, pre-shift mux to ALU 2023-02-17 20:15:12 -08:00
Kevin Kim
cad0973b6b more elegant ZBA logic in controller 2023-02-17 20:14:47 -08:00
Kevin Kim
88d7c3b1f2 bmuctrl handles .uw instructions 2023-02-17 20:14:13 -08:00
David Harris
154d7eb9ef Fixed RAM bugs and refactored with read taking place after clock edge rather than before. 2023-02-17 19:14:38 -08:00
Kevin Kim
01f3cc2838 controller supports ZBA instructions 2023-02-17 16:44:16 -08:00
Kevin Kim
b09d942d60 removed Funct7 in Execute Stage 2023-02-17 16:12:09 -08:00
David Harris
daf2f822c2 Memory synthesis updates 2023-02-17 15:33:49 -08:00
David Harris
3f2f48ddc6 Continue fixing memory macros for synthesis 2023-02-17 15:15:37 -08:00
Ross Thompson
ae8b01b8d4 Renamed globalhistory predictor. 2023-02-17 16:08:34 -06:00
Ross Thompson
2661ec97d8 Fixed global history predictor. 2023-02-17 16:05:48 -06:00
Ross Thompson
a98a85f144 More updates. 2023-02-17 15:53:49 -06:00
Ross Thompson
1d9335c934 Updated global history predictor. 2023-02-17 15:53:15 -06:00
David Harris
aba29f6cc8 Synthesis with memories 2023-02-17 13:51:05 -08:00
Ross Thompson
e0a8974c7d Fixed a branch predictor performance issue. 2023-02-17 15:37:03 -06:00
Kevin Kim
a1570a88c9 bmuctrl checks for illegal zbs-style instructions 2023-02-17 12:54:08 -08:00
Kevin Kim
370ff54875 bctrl bug fix 
- bctrl decodes shift immediate instructions properly
 2023-02-17 11:16:29 -08:00
Kevin Kim
aba4eb80d4 alu bug fix 
- condmaskb piped in correctly instead of b
 2023-02-17 11:02:07 -08:00
Kevin Kim
07eaf146c2 alu looks at BSelect, added BSelect one hot signal 2023-02-17 09:51:49 -08:00
Ross Thompson
c97fa02300 Merge branch 'main' of github.com:ross144/cvw 2023-02-17 10:58:16 -06:00
Ross Thompson
3398c5156b Fixed bug with branch predictor. 2023-02-17 10:57:50 -06:00
Kevin Kim
323d14f9d9 added alu changes to previous commit 2023-02-17 08:22:13 -08:00
Kevin Kim
44c9612a5c added BSelect Signal 
- BSelect [3:0] is a one hot encoding of if it's a ZBA_ZBB_ZBC_ZBS instruction
 2023-02-17 08:21:55 -08:00
Kevin Kim
ada6023a41 comments 2023-02-17 07:53:14 -08:00
Kevin Kim
ab542a5bc3 comments 2023-02-17 07:52:54 -08:00
Kevin Kim
290fcd1789 comment formatting 2023-02-17 07:51:28 -08:00
Kevin Kim
5b341ac3a7 alu handles ALU select instead of funct3 2023-02-17 07:51:10 -08:00
Kevin Kim
ff365de54a added BMU controll 2023-02-17 07:50:59 -08:00
Kevin Kim
f0c81247e4 Added ALUSelect signal into datapath, ieu, controller 2023-02-17 07:50:45 -08:00
David Harris
0d2baed943 Reverted lab3 changes in dev branch 2023-02-16 18:10:05 -08:00
David Harris
26ea8b03c3 Merge branch 'lab3_2023' of https://github.com/openhwgroup/cvw into dev 2023-02-16 17:57:51 -08:00
David Harris
33eb5423cb Update datapath.sv 2023-02-16 17:53:31 -08:00
David Harris
113b124721 Update controller.sv 2023-02-16 17:52:44 -08:00
David Harris
43afa34338 Update alu.sv 2023-02-16 17:52:25 -08:00
Jacob Pease
45b264fa59 Merge branch 'main' of github.com:openhwgroup/cvw into boot 2023-02-16 17:36:26 -06:00
Ross Thompson
b62bacbac3 keep this commit off of cvw. 2023-02-16 11:05:24 -06:00
David Harris
5b370bdc0f Added SSTC support for supervisor timer compare, but presently disable support. Reenable for rv32gc and rv64gc after tests pass. 2023-02-16 07:37:12 -08:00
Kevin Kim
921a32faf9 added comments to zbc units 2023-02-15 17:42:32 -08:00
Kevin Kim
50f0262498 zbc configurability and select mux 2023-02-15 17:39:37 -08:00
Kevin Kim
cd13913f07 controller forwards funct7 
- started the bmu controll register
 2023-02-15 17:38:12 -08:00
Kevin Kim
8feeaa5e94 zbc and carry-less multiply work properly 2023-02-15 17:37:09 -08:00
James Stine
a3aeff2703 Update if-then-else for ram items 2023-02-15 18:12:12 -06:00
Kevin Kim
2eb8721843 continued ZBC integration into ALU 2023-02-15 09:35:07 -08:00
Ross Thompson
c6920ab08e Merge branch 'main' of https://github.com/openhwgroup/cvw 2023-02-15 11:29:39 -06:00
Kevin Kim
2a58a86371 added ALUResult Signal 2023-02-15 09:13:10 -08:00
Kevin Kim
27817c5b1d controller passes funct7 from decode to execute 2023-02-14 16:06:10 -08:00
Kevin Kim
857097282c git 2023-02-14 16:03:26 -08:00
Kevin Kim
420a0209dd Merge branch 'tmp' into main 2023-02-14 13:12:57 -08:00
Kevin Kim
7b7957594e removed unncessary stuff 2023-02-14 13:07:03 -08:00
Kevin Kim
1a209aac21 reverted back to I tests working 2023-02-14 13:06:31 -08:00
Kevin Kim
bcea347370 added ALU result select mux for B instructions 2023-02-13 17:38:00 -08:00
Kevin Kim
1364ac2a14 controller handles bclr 2023-02-13 16:57:05 -08:00
Ross Thompson
911023f441 Merge branch 'main' of github.com:ross144/cvw 2023-02-13 18:54:07 -06:00
Ross Thompson
fc3baa6846 Updated gshare (no speculation) to have better performance. 2023-02-13 18:52:52 -06:00
Kevin Kim
2679f06a00 Shadd instructions pass tests 2023-02-13 16:36:17 -08:00
Ross Thompson
f3c8c6e60a More fixeds to global history. 2023-02-13 18:08:51 -06:00
Ross Thompson
6ea830cf44 Fixed global history predictor. 2023-02-13 18:08:13 -06:00
Ross Thompson
3847d9e39a Updated global history predictor. 2023-02-13 18:07:32 -06:00
Ross Thompson
1ab2d0d19b Fixed bug in basic gshare implementation. Should be a better comparison to the speculative versions now. 2023-02-13 17:57:05 -06:00
Ross Thompson
c18ac35332 Created copy of gshare. I think there may be a simpler implementation. 2023-02-13 17:29:51 -06:00
Ross Thompson
10b45ed6c7 Further branch predictor improvements. 2023-02-13 17:23:56 -06:00
Ross Thompson
1cfdd201a5 Partial improvement. 2023-02-13 17:10:24 -06:00
Ross Thompson
0165fd54b4 Hacked commit. Fixes the gshare bugs introduced last week. 
Need to recover the good changes in the next commit.
 2023-02-13 16:14:17 -06:00
Kevin Kim
02a7dc45f0 ALU lint fixes 2023-02-13 14:01:51 -08:00
Kevin Kim
ed6a0466ad ALU configurability changes 
-stuff that was ZBA supported was in ZBB so I changed that
 2023-02-13 14:00:06 -08:00
Kevin Kim
c9e6b9aeef edited controller so that add.uw passes tests 2023-02-13 13:49:46 -08:00
Kevin Kim
cf09bbff5f alu add.uw needs w64 to be false 2023-02-13 13:49:35 -08:00
Ross Thompson
716fbca2b1 Partial fix for gshare bugs from the last two weeks. 2023-02-13 11:57:25 -06:00
Ross Thompson
51158e94ba Removed another bit from btb class. 2023-02-12 11:33:43 -06:00
Kevin Kim
19c8fa75f5 simulation runs-- clmul doesn't pass lint with xor tree 2023-02-11 21:22:33 -08:00
Kevin Kim
67db085b24 lint fixes 2023-02-11 21:13:10 -08:00
Kevin Kim
c7dbb49208 zbb, zbs, cnt lint fixes 2023-02-11 20:41:52 -08:00
Kevin Kim
016634d842 fixed byte unit lints 2023-02-11 20:25:34 -08:00
Kevin Kim
3653ea61b5 fixed lints in cnt 2023-02-11 20:22:42 -08:00
Kevin Kim
2dfbf15ff9 fixed typo in LZC 2023-02-11 19:59:03 -08:00
Kevin Kim
52ca8fa691 popcnt passes lint 2023-02-11 19:19:38 -08:00
Kevin Kim
2fefc3019e clmul passes lint 2023-02-11 19:16:13 -08:00
Ross Thompson
91fc883f6a More simplifications to the BP. 2023-02-10 17:09:35 -06:00
Ross Thompson
6fbca64eb7 Experimental branch prediction optimization. 2023-02-10 15:45:56 -06:00
Kip Macsai-Goren
f95038551f fixed small errors to get regression to run with bit manip supported. 2023-02-10 10:37:06 -08:00
Kip Macsai-Goren
137dd890a0 Merge remote-tracking branch 'upstream/main' into main 2023-02-10 10:01:14 -08:00
Ross Thompson
eafb406c9e Merge branch 'main' of https://github.com/openhwgroup/cvw 2023-02-10 10:38:39 -06:00
Ross Thompson
ca0eb5a591 Modified branch predictor to use InstrValidE and InstrValidD rather than the more complex InstrClassE | WrongClassE logic. 2023-02-10 10:33:10 -06:00
Ross Thompson
91427ed72d RAS and RAS documentation now consistent. 2023-02-10 09:06:51 -06:00
Ross Thompson
2d7749db7f Updated globalhistory predictor. 2023-02-09 14:48:02 -06:00
Kevin Kim
f58a2b70a0 Include Funct7 in execute 
- Modifed datapath to support funct7 in execute
- Modified controller to pass on Funct7
- all lints pass
 2023-02-09 19:18:54 +00:00
Kevin Kim
76a8f2d3d3 added W64 zbb input signal in alu 2023-02-09 19:07:22 +00:00
Kevin Kim
17bd001057 modified zbb to account for cnt module change 2023-02-09 16:45:37 +00:00
Kevin Kim
5b5f9a2784 modified cnt for zbb to mux inputs 2023-02-09 16:45:22 +00:00
Ross Thompson
962c018991 Simplified branch predictor. 2023-02-08 18:24:38 -06:00
Kevin Kim
4bf0886129 moved files into bmu folder 2023-02-08 13:57:09 +00:00
Kip Macsai-Goren
347b43c811 Merge remote-tracking branch 'upstream/main' into main 2023-02-07 23:28:50 -08:00
David Harris
05ba66385f Merge branch 'main' of https://github.com/openhwgroup/cvw into dev 2023-02-07 16:49:58 -08:00
Ross Thompson
0678f3f2b7 Branch predictor cleanup. 2023-02-07 14:01:59 -06:00
David Harris
755c795f91 Moved STATUS_FS_INT write to if statement to properly prioritize 2023-02-07 06:55:42 -08:00
David Harris
e92605e2de Disabled STATUS_FS at reset, fixing issue #71 2023-02-07 06:31:14 -08:00
Kip Macsai-Goren
41a91cc1e7 fixed merge conflicts with removal of pipelined folder 2023-02-06 18:04:28 -08:00
Ross Thompson
c33230d1c1 Fixed Bug 66. 
If a load missed at the same time as a spilled instruction fetch with an ITLB miss in the second cache line, the HPTW did not wait for the load miss to finish.
 2023-02-06 17:32:28 -06:00
Ross Thompson
4e8ef4a0ac Removed unreachable if branch in hptw next state logic. 2023-02-06 16:42:07 -06:00
David Harris
7cf98811f3 Parenthesized reduction operators to avoid DC lint 2023-02-04 18:49:47 -08:00
David Harris
43668a3fc5 Developing debug test 2023-02-04 08:31:47 -08:00
David Harris
6b9ae4fc89 Fixed merge issues on synthDC PR 2023-02-04 04:13:40 -08:00
David Harris
e831baf335 Improved illegal NaN-box detection and formatted fsgninj 2023-02-04 03:42:20 -08:00
David Harris
97ee3732fe Merge branch 'main' of https://github.com/openhwgroup/cvw into dev 2023-02-03 08:36:11 -08:00
David Harris
e6bfcd14fa Merged with memories 2023-02-02 14:50:46 -08:00
David Harris
78eb90715c Removed pipelined level of hierarchy 2023-02-02 14:14:11 -08:00