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2178 Commits

Author SHA1 Message Date
Ross Thompson
cc48cdc97b 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
6040a45698 optimized branch predictor by removing unnecessary registers. 2023-01-29 22:39:37 -06:00
David Harris
173c6b635c Moved WALLY-status-fp-enabled tests from a to priv suites 2023-01-29 17:19:53 -08:00
David Harris
e7883775f3 Moved shared constants into per-processor config and removed wally-constants 2023-01-29 15:55:37 -08:00
Ross Thompson
392716a608 Updated global history branch predictcor with the gshare improvements. 2023-01-29 16:26:44 -06:00
David Harris
234860d4e5 Merged PR#37 branch predictor 2023-01-29 14:25:28 -08:00
David Harris
9d44c59a38 Removed unused TESTSBP parameter 2023-01-29 14:19:24 -08:00
Ross Thompson
a9a7054e2f 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
d6ae1156d0 gshare cleanup. 2023-01-29 15:07:45 -06:00
Ross Thompson
ef874f3409 Gshare cleanup. 2023-01-29 15:06:35 -06:00
Ross Thompson
74b4f78099 Found bug in gshare. 2023-01-29 15:03:25 -06:00
David Harris
d1afc2f14a Fixed configuration of ram to use macro when depth is corret 2023-01-29 11:35:17 -08:00
David Harris
be2dc6a774 Removed unused wally-harvard.do script 2023-01-29 11:34:35 -08:00
David Harris
5d2a48d5d8 Converted rv32ic to rv32imc 2023-01-29 11:33:54 -08:00
Ross Thompson
e1fd5925b0 Fixed typo in testbench branch logger. 2023-01-29 01:00:52 -06:00
Ross Thompson
f62fbedbe8 Fixed another bug with the branch logger. 2023-01-29 00:59:59 -06:00
Ross Thompson
8e73f6b467 Fixed bug in the branch logger. 2023-01-29 00:58:50 -06:00
Ross Thompson
65a31381da Updated testbench for branch logger. 2023-01-29 00:56:11 -06:00
Ross Thompson
1044c290c2 Fixed bug with the btb's valid bit not beind held on a stall. 2023-01-29 00:49:23 -06:00
Ross Thompson
f93eaeef8e Fixed another bug with the speculative gshare with instruction class prediction. 2023-01-29 00:33:40 -06:00
David Harris
99d12a5ef0 Removed unused BPRED file referenes from fpga config 2023-01-28 20:22:36 -08:00
David Harris
481cb8bad0 Renamed BPTYPE to BPRED_TYPE 2023-01-28 20:06:12 -08:00
David Harris
94daedeed6 Renamed DCACHE to DCACHE_SUPPORTED and ICACHE to ICACHE_SUPPORTED 2023-01-28 18:52:00 -08:00
David Harris
e4e7e827d6 Renamed BUS to BUS_SUPPORTED 2023-01-28 18:35:53 -08:00
David Harris
a0b4e7fb24 Config cleanup and renamed BPRED_ENABLED to BPRED_SUPPORTED 2023-01-28 18:17:42 -08:00
David Harris
33143e5958 Fixed typo in ram2p1r1wbe_1024x69 and renamed for consistency 2023-01-28 18:07:33 -08:00
David Harris
1bb1fc7604 Merge branch 'main' of https://github.com/openhwgroup/cvw into dev 2023-01-28 17:55:08 -08:00
James Stine
a1d892703c 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
f6aafd6bad Fixed bug with the new csr. 2023-01-28 17:56:56 -06:00
Ross Thompson
6371d91b37 Added another performance counter to track overall branch miss-predictions. 2023-01-28 17:50:46 -06:00
Ross Thompson
57deb68fb3 Found an issue where the btb was not forwarding the valid bit! 2023-01-28 17:00:50 -06:00
Ross Thompson
6d9c463893 Possible workign instruction class prediction repair. 2023-01-28 16:42:19 -06:00
Ross Thompson
8a277f6b75 Possible fix for speculative gshare. 2023-01-28 16:14:19 -06:00
David Harris
08124b917f Comment cleanup in subcachelineread 2023-01-28 11:00:05 -08:00
David Harris
0f5df3340f removed unused memory model 2023-01-28 10:58:36 -08:00
David Harris
f9cfa7cdc2 Updated cvw to be consistent with configs 2023-01-28 10:58:02 -08:00
David Harris
9eb1938d41 Removed DEISGN_COMPILER configuration paramter 2023-01-28 10:51:39 -08:00
David Harris
6603cd9e09 Removed unneeded lint directive from core 2023-01-27 15:48:30 -08:00
David Harris
eaab1bfad4 Use CVW configuration in top-level 2023-01-27 15:47:36 -08:00
David Harris
3fea392875 Removed unused BMU, added CVW configuration 2023-01-27 15:47:15 -08:00
David Harris
ef83309ea9 Added missing PLIC_GPIO_ID to two config files 2023-01-27 15:23:32 -08:00
David Harris
d78f8d76cc Fixed license header for config files to SolderPad 2023-01-27 15:17:17 -08:00
Ross Thompson
6d75e3c22b Clarified gshare bp. 2023-01-27 16:40:20 -06:00
David Harris
3906e706fd Removed integer from localparams 2023-01-27 14:40:06 -08:00
David Harris
5a81a26c9e Removed int/integer from parameters) 2023-01-27 14:27:04 -08:00
Ross Thompson
857004c3a3 Removed pessimistic x propagation issue for wally32priv test in the branch predictor. 2023-01-27 15:28:31 -06:00
Ross Thompson
c1ae7c068e Found issue with branch predictor. 2023-01-27 13:13:55 -06:00
David Harris
4b196736a5 Renamed ram2p1rw1be to match modeule name 2023-01-27 09:54:50 -08:00
Ross Thompson
a212960352 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
237e3a620f Removed suggestion about make allclean 2023-01-27 05:57:05 -08:00
David Harris
767cfdc8a5 Fixed typo in bpred preventing compiling 2023-01-27 05:55:53 -08:00
David Harris
c2139eba93 renamed brpred to bpred 2023-01-27 05:55:31 -08:00
David Harris
947713f1f3 Merge branch 'main' of https://github.com/openhwgroup/cvw into dev 2023-01-26 14:52:25 -08:00
Ross Thompson
4fa2dcc2a5 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
6025bbc9ae Fixed another bug with the compressed instruction class decode. 2023-01-26 12:19:33 -06:00
Ross Thompson
a8d5ba1ea4 Fixed compressed branch class decode. 2023-01-26 11:07:47 -06:00
Ross Thompson
3577220625 Improved no class prediction mode. 2023-01-26 10:54:43 -06:00
Ross Thompson
19a964325a Modified the RAS to correctly repair itself. 2023-01-25 23:33:03 -06:00
Ross Thompson
3dc441ff8c Intermediate commit. Passes regression tests, but RAS is not correct. 2023-01-25 19:39:18 -06:00
Ross Thompson
63617b56cf Fixed typos. 2023-01-25 18:51:09 -06:00
Ross Thompson
3b4d49a358 RAS is now compliant with our header and documentation guide. 2023-01-25 17:18:07 -06:00
Ross Thompson
5da1aeeef1 Improved RAS again. 2023-01-25 17:10:52 -06:00
Ross Thompson
2f0e40402b Improved RAS. 2023-01-25 17:06:25 -06:00
Ross Thompson
724ae13cc2 More branch predictor improvements. 2023-01-25 16:03:02 -06:00
Ross Thompson
fd1f7d4d34 Cleaned up branch predictor. 2023-01-25 15:29:55 -06:00
Ross Thompson
56a24d02e8 Fixed subtle bug in btb. 2023-01-25 15:16:53 -06:00
Ross Thompson
16142eca59 Added logic to forward btb prediction results. 2023-01-25 13:02:20 -06:00
Ross Thompson
4550966678 More btb cleanup. 2023-01-25 12:14:18 -06:00
Ross Thompson
40b4811d2b Found minor bug in gshare. 2023-01-25 12:08:54 -06:00
Ross Thompson
afdcfeb93b BTB cleanup. 2023-01-25 12:05:13 -06:00
Ross Thompson
7e1363bfad Optomized gshare. 2023-01-25 11:41:16 -06:00
Ross Thompson
b931110f2d Renamed file missed from last commit. 2023-01-25 10:17:43 -06:00
Ross Thompson
ad6f7041b4 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
56369f7641 Removed old versions of gshare. 2023-01-24 17:26:54 -06:00
Ross Thompson
1acbdaeca6 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
1170dc7250 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
7d1109fc24 Partial BTB cleanup. 2023-01-24 16:12:35 -06:00
Ross Thompson
2157970adf Moved branch predictor files into separate sub-directory. 2023-01-24 16:00:27 -06:00
David Harris
490ca23c87 Merge remote-tracking branch 'upstream/main' into dev 2023-01-24 09:40:07 -08:00
David Harris
f28b0e5c1a bpred input spacing cleanup 2023-01-24 06:14:31 -08:00
David Harris
5233117568 bpred tab cleanup 2023-01-24 05:42:34 -08:00
Ross Thompson
5494ee2159 Moved ebufsmarb into its own module. 2023-01-23 23:10:10 -06:00
Ross Thompson
a4d5ccc4d6 Added comments about needing move ebufsm into a new module. 2023-01-23 22:03:49 -06:00
Ross Thompson
1439ff02c7 Added comments to lrsc module. 2023-01-23 17:49:47 -06:00
Ross Thompson
e9f435bbda Oups fixed bug from the last commit. 2023-01-23 17:38:30 -06:00
Ross Thompson
af6899472d Another round of cleanup in the LSU. 2023-01-23 17:27:39 -06:00
David Harris
fc6cf1f198 formatting 2023-01-23 10:54:06 -08:00
David Harris
2d7f39672a Repo cleanup 2023-01-23 10:37:33 -08:00
Ross Thompson
626bcd8608 Removed mark_debug from all source code. 2023-01-20 18:47:36 -06:00
David Harris
45218863af test 2023-01-20 15:23:38 -08:00
David Harris
3d13683c07 Continued framework for B instructions 2023-01-20 14:27:13 -08:00
David Harris
a968ae2f66 Merge branch 'main' of https://github.com/davidharrishmc/riscv-wally into main 2023-01-20 14:19:10 -08:00
David Harris
e87c2b2724 Started adding bit manipulation unit 2023-01-20 14:19:07 -08:00
Ross Thompson
0123776037 Updated figure cache references. 2023-01-20 15:01:54 -06:00
Ross Thompson
3e1a54e80a 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
2e9b5f9ae4 Formatting. 2023-01-20 13:13:05 -06:00
Ross Thompson
bcadbd7104 Formatting. 2023-01-20 13:09:42 -06:00
Ross Thompson
ecceea177a Formatting. 2023-01-20 13:05:10 -06:00
Ross Thompson
3d202ed2fd Reformatting cachefsm. 2023-01-20 12:49:55 -06:00
Ross Thompson
d3df8e062e Formatting. 2023-01-20 12:41:57 -06:00