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2178 Commits

Author SHA1 Message Date
Ross Thompson
7a4218788c Imperas found a real bug in virtual memory. 
If the instruction address spilled across two pages and the second page misses the TLB,
the HPTW received a tlb miss at the address of the first page rather than the second.
After the walk the TLB was updated with the PTE from the first page at the address of the
second page.

Example bug
Instruction PCF = 0x2ffe
First page in 0x2ffe and second page in 0x3000.
The second page misses the TLB and generates HPTW request at 0x2ffe rather than 0x3000.
TLB is updated with PTE from 0x2ffe at 0x3000.
 2023-01-30 11:47:51 -06:00
Ross Thompson
63267ff378 optimized branch predictor by removing unnecessary registers. 2023-01-29 22:39:37 -06:00
David Harris
4c75a90e39 Moved WALLY-status-fp-enabled tests from a to priv suites 2023-01-29 17:19:53 -08:00
David Harris
327303e2e2 Moved shared constants into per-processor config and removed wally-constants 2023-01-29 15:55:37 -08:00
Ross Thompson
dd9d2be89c Updated global history branch predictcor with the gshare improvements. 2023-01-29 16:26:44 -06:00
David Harris
7705209141 Merged PR#37 branch predictor 2023-01-29 14:25:28 -08:00
David Harris
db07c6618b Removed unused TESTSBP parameter 2023-01-29 14:19:24 -08:00
Ross Thompson
a9902337cf Merge branch 'main' of https://github.com/openhwgroup/cvw 
This merges the branch predictor improvements into the main repo.
 2023-01-29 15:24:20 -06:00
Ross Thompson
7c8b2b685f gshare cleanup. 2023-01-29 15:07:45 -06:00
Ross Thompson
2a336cfb71 Gshare cleanup. 2023-01-29 15:06:35 -06:00
Ross Thompson
244885d3fa Found bug in gshare. 2023-01-29 15:03:25 -06:00
David Harris
a099cbb45b Fixed configuration of ram to use macro when depth is corret 2023-01-29 11:35:17 -08:00
David Harris
d6b0a8f9a1 Removed unused wally-harvard.do script 2023-01-29 11:34:35 -08:00
David Harris
f37bae1062 Converted rv32ic to rv32imc 2023-01-29 11:33:54 -08:00
Ross Thompson
49a7d10914 Fixed typo in testbench branch logger. 2023-01-29 01:00:52 -06:00
Ross Thompson
5c83de4c46 Fixed another bug with the branch logger. 2023-01-29 00:59:59 -06:00
Ross Thompson
6afd7f4fac Fixed bug in the branch logger. 2023-01-29 00:58:50 -06:00
Ross Thompson
250a8df7c3 Updated testbench for branch logger. 2023-01-29 00:56:11 -06:00
Ross Thompson
c8df460b28 Fixed bug with the btb's valid bit not beind held on a stall. 2023-01-29 00:49:23 -06:00
Ross Thompson
9e3074689d Fixed another bug with the speculative gshare with instruction class prediction. 2023-01-29 00:33:40 -06:00
David Harris
0f13941d3b Removed unused BPRED file referenes from fpga config 2023-01-28 20:22:36 -08:00
David Harris
799caef2c9 Renamed BPTYPE to BPRED_TYPE 2023-01-28 20:06:12 -08:00
David Harris
b89fe9989e Renamed DCACHE to DCACHE_SUPPORTED and ICACHE to ICACHE_SUPPORTED 2023-01-28 18:52:00 -08:00
David Harris
fa3643a064 Renamed BUS to BUS_SUPPORTED 2023-01-28 18:35:53 -08:00
David Harris
8a96dcf0ae Config cleanup and renamed BPRED_ENABLED to BPRED_SUPPORTED 2023-01-28 18:17:42 -08:00
David Harris
c73fe4041e Fixed typo in ram2p1r1wbe_1024x69 and renamed for consistency 2023-01-28 18:07:33 -08:00
David Harris
e27ab1a052 Merge branch 'main' of https://github.com/openhwgroup/cvw into dev 2023-01-28 17:55:08 -08:00
James Stine
5a0d8aed23 Modified changes as follows 
* Add docs directory for Docker including Dockerfile
* Change to synthesis script to include fpu stuff
* Add wrappers for IP (may need some cleanup but will cleanup shortly)
 2023-01-28 19:33:00 -06:00
Ross Thompson
6945eaf045 Fixed bug with the new csr. 2023-01-28 17:56:56 -06:00
Ross Thompson
684a7214cb Added another performance counter to track overall branch miss-predictions. 2023-01-28 17:50:46 -06:00
Ross Thompson
3ddf95ac6e Found an issue where the btb was not forwarding the valid bit! 2023-01-28 17:00:50 -06:00
Ross Thompson
b52990e2ce Possible workign instruction class prediction repair. 2023-01-28 16:42:19 -06:00
Ross Thompson
3f25123c63 Possible fix for speculative gshare. 2023-01-28 16:14:19 -06:00
David Harris
ed1aaa6c8f Comment cleanup in subcachelineread 2023-01-28 11:00:05 -08:00
David Harris
1b0b9314c4 removed unused memory model 2023-01-28 10:58:36 -08:00
David Harris
6c59c21a26 Updated cvw to be consistent with configs 2023-01-28 10:58:02 -08:00
David Harris
1041775be4 Removed DEISGN_COMPILER configuration paramter 2023-01-28 10:51:39 -08:00
David Harris
eeaa5d9982 Removed unneeded lint directive from core 2023-01-27 15:48:30 -08:00
David Harris
aee984ca69 Use CVW configuration in top-level 2023-01-27 15:47:36 -08:00
David Harris
c2ce2947f9 Removed unused BMU, added CVW configuration 2023-01-27 15:47:15 -08:00
David Harris
5547179a3c Added missing PLIC_GPIO_ID to two config files 2023-01-27 15:23:32 -08:00
David Harris
848ccd8b90 Fixed license header for config files to SolderPad 2023-01-27 15:17:17 -08:00
Ross Thompson
a953954909 Clarified gshare bp. 2023-01-27 16:40:20 -06:00
David Harris
a99fc74976 Removed integer from localparams 2023-01-27 14:40:06 -08:00
David Harris
717cb4e6c5 Removed int/integer from parameters) 2023-01-27 14:27:04 -08:00
Ross Thompson
121fbd9646 Removed pessimistic x propagation issue for wally32priv test in the branch predictor. 2023-01-27 15:28:31 -06:00
Ross Thompson
cf49c7ddc1 Found issue with branch predictor. 2023-01-27 13:13:55 -06:00
David Harris
44c7102026 Renamed ram2p1rw1be to match modeule name 2023-01-27 09:54:50 -08:00
Ross Thompson
6c86c0389c Very hacky. But I think gshare is now correct with respect to repair on instruction class miss prediction. 2023-01-27 11:34:45 -06:00
David Harris
4744996282 Removed suggestion about make allclean 2023-01-27 05:57:05 -08:00
David Harris
4f7e1b9423 Fixed typo in bpred preventing compiling 2023-01-27 05:55:53 -08:00
David Harris
e682b8d0d4 renamed brpred to bpred 2023-01-27 05:55:31 -08:00
David Harris
3986e84179 Merge branch 'main' of https://github.com/openhwgroup/cvw into dev 2023-01-26 14:52:25 -08:00
Ross Thompson
bbb47fc943 Changed the performance counters to track different data. 
Now rather than tracking jump(r) we track jump(r) and taken branches.
 2023-01-26 13:21:28 -06:00
Ross Thompson
e0ca23cdd6 Fixed another bug with the compressed instruction class decode. 2023-01-26 12:19:33 -06:00
Ross Thompson
3652673487 Fixed compressed branch class decode. 2023-01-26 11:07:47 -06:00
Ross Thompson
2ee6ffe74b Improved no class prediction mode. 2023-01-26 10:54:43 -06:00
Ross Thompson
29d4cd7ffa Modified the RAS to correctly repair itself. 2023-01-25 23:33:03 -06:00
Ross Thompson
43d4ac1c7b Intermediate commit. Passes regression tests, but RAS is not correct. 2023-01-25 19:39:18 -06:00
Ross Thompson
4e858199e5 Fixed typos. 2023-01-25 18:51:09 -06:00
Ross Thompson
e1d0be5c61 RAS is now compliant with our header and documentation guide. 2023-01-25 17:18:07 -06:00
Ross Thompson
0b9f787635 Improved RAS again. 2023-01-25 17:10:52 -06:00
Ross Thompson
172c40d44b Improved RAS. 2023-01-25 17:06:25 -06:00
Ross Thompson
56aa798d5c More branch predictor improvements. 2023-01-25 16:03:02 -06:00
Ross Thompson
3d285312f0 Cleaned up branch predictor. 2023-01-25 15:29:55 -06:00
Ross Thompson
bb89bf82bf Fixed subtle bug in btb. 2023-01-25 15:16:53 -06:00
Ross Thompson
d4004c2c22 Added logic to forward btb prediction results. 2023-01-25 13:02:20 -06:00
Ross Thompson
541524a754 More btb cleanup. 2023-01-25 12:14:18 -06:00
Ross Thompson
85e015d61e Found minor bug in gshare. 2023-01-25 12:08:54 -06:00
Ross Thompson
a0bca35b50 BTB cleanup. 2023-01-25 12:05:13 -06:00
Ross Thompson
5030a56f57 Optomized gshare. 2023-01-25 11:41:16 -06:00
Ross Thompson
a5bd78a622 Renamed file missed from last commit. 2023-01-25 10:17:43 -06:00
Ross Thompson
1e7fda6410 Fixed wrong header on optgshare.sv. Somehow it still had the old MIT license. 
Renamed ram2p1rwbefix.sv to ram2p1rwbe.sv
 2023-01-25 10:14:30 -06:00
Ross Thompson
42553d1d94 Removed old versions of gshare. 2023-01-24 17:26:54 -06:00
Ross Thompson
0d7653f1c7 Removed the old two port ram and replaced it with the fixed version. 
The fixed version is renamed to ram2p1r1wb.sv
 2023-01-24 17:25:16 -06:00
Ross Thompson
3d07f7a3a2 Moved and ranamed btb to btb.sv 
Fixed btb to use the fixed port 2 sram.
 2023-01-24 17:19:51 -06:00
Ross Thompson
7ae6b1868e Partial BTB cleanup. 2023-01-24 16:12:35 -06:00
Ross Thompson
879cb77b90 Moved branch predictor files into separate sub-directory. 2023-01-24 16:00:27 -06:00
David Harris
7d015151bb Merge remote-tracking branch 'upstream/main' into dev 2023-01-24 09:40:07 -08:00
David Harris
0e5ea5f51d bpred input spacing cleanup 2023-01-24 06:14:31 -08:00
David Harris
30b085911a bpred tab cleanup 2023-01-24 05:42:34 -08:00
Ross Thompson
89698a929e Moved ebufsmarb into its own module. 2023-01-23 23:10:10 -06:00
Ross Thompson
d495d7b04d Added comments about needing move ebufsm into a new module. 2023-01-23 22:03:49 -06:00
Ross Thompson
45094fc7bb Added comments to lrsc module. 2023-01-23 17:49:47 -06:00
Ross Thompson
e1c121fe0d Oups fixed bug from the last commit. 2023-01-23 17:38:30 -06:00
Ross Thompson
bb11de0f4c Another round of cleanup in the LSU. 2023-01-23 17:27:39 -06:00
David Harris
678a879415 formatting 2023-01-23 10:54:06 -08:00
David Harris
b6b67516eb Repo cleanup 2023-01-23 10:37:33 -08:00
Ross Thompson
07308e2c14 Removed mark_debug from all source code. 2023-01-20 18:47:36 -06:00
David Harris
c2f7f7324d test 2023-01-20 15:23:38 -08:00
David Harris
b173112f86 Continued framework for B instructions 2023-01-20 14:27:13 -08:00
David Harris
1933ea39fa Merge branch 'main' of https://github.com/davidharrishmc/riscv-wally into main 2023-01-20 14:19:10 -08:00
David Harris
0f68fccf82 Started adding bit manipulation unit 2023-01-20 14:19:07 -08:00
Ross Thompson
3d71d0196c Updated figure cache references. 2023-01-20 15:01:54 -06:00
Ross Thompson
5b740fbf60 Removed SDC from repo due to copy right issue. 
Modified fpga build flow to reference it outside the repo.
 2023-01-20 14:57:06 -06:00
Ross Thompson
b1f3bd566c Formatting. 2023-01-20 13:13:05 -06:00
Ross Thompson
f78bfc4940 Formatting. 2023-01-20 13:09:42 -06:00
Ross Thompson
c7f4970597 Formatting. 2023-01-20 13:05:10 -06:00
Ross Thompson
6142c96946 Reformatting cachefsm. 2023-01-20 12:49:55 -06:00
Ross Thompson
7e96f3e8f7 Formatting. 2023-01-20 12:41:57 -06:00