Cheri-research/Toooba
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e873bbd55376874f6ba9e09362f60f65f7e0fcc7
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510 Commits

Author SHA1 Message Date
Jonathan Woodruff
e873bbd553 Clean up Fetch stage optimisations. This includes removing references 
to Fetch3, which no longer exists since Fetch2 and Fetch1 are merged
(Fetch3 is now Fetch2).
 2024-01-26 15:14:03 +00:00
Jonathan Woodruff
ca4e120a6c Use DReg instead of Reg, as intended. 2024-01-22 12:06:39 +00:00
Jonathan Woodruff
b586937953 Fix RVFI_DII by only going to the next ID when the instruction fetch is 
going ahead.
 2024-01-22 11:38:52 +00:00
Jonathan Woodruff
640f330d7d Briefly report flush when vm_info has a change in the itlb to give an 
opportunity to flush the buffered translations.
 2024-01-19 11:48:04 +00:00
Jonathan Woodruff
d30bd71e72 Allow consuming TLB response while TLB is being flushed. 2024-01-18 13:04:21 +00:00
Jonathan Woodruff
83c756a4f4 Tidy up data mem pipeline changes to remove duplicated code. 2024-01-17 16:09:42 +00:00
Jonathan Woodruff
9d12fefda8 Remove commented-out code. 2024-01-17 14:30:34 +00:00
Jonathan Woodruff
829a787be5 Move to vector functions as it's cleaner. 2024-01-17 13:41:43 +00:00
Jonathan Woodruff
5a1ed7c57f Allow a vector of translations to be remembered. 
Just do 2 for now.
 2024-01-17 13:21:38 +00:00
Jonathan Woodruff
4f91e54bd2 Properly remove pipline stage in fetch and use a seperate rule to do the 
proper TLB lookup if necessary.
 2024-01-16 17:00:10 +00:00
Jonathan Woodruff
eee5a2c23b Experiment with a zero-cycle TLB in instruction fetch as well. 2024-01-16 10:05:17 +00:00
Jonathan Woodruff
25a728b6d3 Optimise timing of TLB translation, ensuring that the translated address 
proceeds with minimal conditions to the output.
 2024-01-16 09:50:35 +00:00
Jonathan Woodruff
f9bf4ad856 Use default value on reset of Map. 2024-01-15 17:00:00 +00:00
Jonathan Woodruff
2c3c1da5c3 Solve last issue to allow doExeMem and doFinishMem. 2024-01-09 17:12:39 +00:00
Jonathan Woodruff
2f6a0980d9 Move all the work other than the TLB request out of doExeMem back to 
doRegReadMem.
 2024-01-09 12:37:34 +00:00
Jonathan Woodruff
3e3531ffd5 Revert "A scheduling experiment to try to get doRegReadMem and doExeMem" 
This reverts commit b733e05a86.
 2024-01-09 11:54:53 +00:00
Jonathan Woodruff
b733e05a86 A scheduling experiment to try to get doRegReadMem and doExeMem 
executing in the same clock cycle.  It doesn't seem to work (yet).
 2024-01-09 11:52:29 +00:00
Jonathan Woodruff
32d094082b Some tracing for performance in the memory pipeline. 
Also, add some ports to registers in DTLB to potentially allow
single-cycle lookup.
 2024-01-08 15:28:24 +00:00
Jonathan Woodruff
2d05514b66 An experimental simplification of the SplitLSQ, which I think works 
because the Memory pipeline only ever reads the getIssueLd interface in
the same rule that it calls issueLd.
 2023-12-12 17:29:27 +00:00
Peter Rugg
4acbe2f43b Fix build error with SPEC contracts 2023-07-17 17:38:57 +01:00
Peter Rugg
373b849d29 Merge branch 'tag-clear' into CHERI 2023-06-27 11:38:42 +01:00
Peter Rugg
ec4eacac9c Fix CSetAddr tag clear bug 2023-06-26 18:01:56 +01:00
Peter Rugg
86782f9bb5 Cleanup unused exception code 2023-06-20 16:46:39 +01:00
Peter Rugg
c8b0e12f79 Remove traps for CBuildCap 
This will be very expensive in terms of area and possibly timing.
Ideally this instruction would be multi-cycle or optimised to reduce the overhead.
 2023-06-20 16:23:44 +01:00
Peter Rugg
f3ac024b73 Remove exceptions from CUnseal 2023-06-20 12:32:49 +01:00
Peter Rugg
ca711eab2a Remove exceptions from CToPtr and CFromPtr 2023-06-20 09:45:48 +01:00
gameboo
e6a8111a1b Fix forgotten type change from tuple2 to tuple3 in mem exe pipeline 2023-06-14 11:49:09 +01:00
Jonathan Woodruff
f476990c65 Merge branch 'CHERI' into ks980-prefetch 2023-05-17 15:32:40 +00:00
Karlis Susters
5733ed9ac0 Implemented overflow bypass fifo, required for double target table 2023-04-12 21:58:35 +03:00
Karlis Susters
30a3aff5af Config for L1D Stride-3 prefetcher 2023-03-07 12:33:51 +00:00
Peter Rugg
2047a85b27 Fixes for the simplified debug unit DMA port 2023-02-28 14:55:20 +00:00
Jonathan Woodruff
f255193841 Vastly simplified DMA Connect that does not buffer data at all. 
This has not been tested yet, but it builds.
 2023-02-28 13:28:29 +00:00
Jonathan Woodruff
a91f15d10c Merge branch 'CHERI' into jdw57-512axi 2023-02-21 12:18:02 +00:00
Peter Rugg
e981b7625f Ban illegal JALR and Br encodings 2023-02-16 16:41:39 +00:00
Karlis Susters
79c55c5651 Implemented cross cache prefetching, fixed some coherence bugs in LLC 2023-02-13 11:59:26 +00:00
Karlis Susters
347107b733 Prefetcher implementation in both L1 and LL and data logging 2023-02-13 11:59:26 +00:00
Peter Rugg
8ea0e07ce5 Avoid wedge on repeated debug resumes (with jdw57 and aj443) 
ConfigReg avoids a compile error
 2023-02-10 18:12:08 +00:00
Peter Rugg
6931201a14 Avoid wedge on repeated debug resumes (with jdw57 and aj443) 
ConfigReg avoids a compile error
 2023-01-31 21:02:17 +00:00
Peter Rugg
9f24a516e6 Remove traps from CSeal and CCSeal 2023-01-16 10:43:32 +00:00
Peter Rugg
ecdc2e0107 Remove remaining unsealed checks 2023-01-11 17:50:37 +00:00
Peter Rugg
4c166c95b9 Change treatment of reserved types in CCopyType 2023-01-11 17:40:51 +00:00
Alexandre Joannou
98e15acb3d Bump BlueStuff + use _Periph versions of parameters where needed 2022-11-18 12:07:24 +00:00
Jonathan Woodruff
4af4b647b1 Merge branch 'CHERI' into jdw57-512axi 2022-11-14 14:51:54 +00:00
Peter Rugg
e120b3427d Merge branch 'LoadTagsImprove' into CHERI 2022-11-14 13:28:44 +00:00
Jonathan Woodruff
ddf4afaf71 Changes to build with a 512-bit main data bus (with all other busses 
still 64-bits).
Also, the top-level SoC_Top exposes a 64-bit bus still, so hopefully the
GFE configuration is unchanged.
This passes the isa_tests.
 2022-11-11 17:52:32 +00:00
Peter Rugg
de0c0315f4 Remove trap conditions for CCopyType 2022-10-25 22:11:58 +01:00
Peter Rugg
b0233a01c4 Remove trap on CSetBounds* 2022-10-25 22:03:31 +01:00
Franz Fuchs
de0e19ca55 added do not cares for missing struct fields in ROB 2022-10-21 09:22:31 +00:00
Peter Rugg
2b471b0196 Don't require permit_x when constructing sentries 2022-10-18 15:51:52 +01:00
Peter Rugg
04ba0cb7ab Prefer tag clearing to trapping when manipulating a sealed capability 
This causes the behaviour of CCSeal and CSeal to diverge in non-trapping cases,
meaning an extra case is added to CapModify.
 2022-10-18 15:48:35 +01:00