Andrew Waterman
cc0f8962fb
[rocket] take physical memory attribute check off critical path
...
Cache the attributes in the TLB instead.
2016-08-02 17:21:03 -07:00
Andrew Waterman
76f33d88a6
[rocket] Respect physical memory protection during page table walks
2016-08-02 17:20:49 -07:00
Andrew Waterman
5d4f6383f2
[rocket] Automatically kill D$ access on address exceptions
...
Doing this internally to the cache eliminates a long control path
from the cache to the core and back to the cache.
2016-08-02 17:20:49 -07:00
Andrew Waterman
b54db0ba23
[rocket] don't update BTB on not-taken branches
...
Only update the BHT; don't set the target prediction to pc+4.
2016-08-02 17:20:49 -07:00
Andrew Waterman
64bde1060c
[rocket] remove unused code in ibuf
2016-08-02 15:26:09 -07:00
Andrew Waterman
2ce702dc0a
[rocket] fix PTW critical path
...
Pipeline the killing of a D$ request following a PTW cache hit.
2016-08-02 15:19:48 -07:00
Andrew Waterman
7e9d139e49
[rocket] remove rocket-specific require() from HasCoreParameters
2016-08-02 15:19:48 -07:00
Andrew Waterman
791a27748b
Update firrtl and remove firrtl hack in plic
2016-08-02 15:19:48 -07:00
Howard Mao
f04aefc95c
get rid of deprecated ZynqAdapter
2016-08-02 13:14:20 -07:00
Howard Mao
63b814fcd7
only run the important (high coverage) tests in regression suite
2016-08-02 10:54:05 -07:00
Howard Mao
b7723f1ff8
make unit tests local to the packages being tested
2016-08-01 17:02:00 -07:00
Howard Mao
98eede0505
some refactoring in RocketChip top-level
2016-08-01 17:02:00 -07:00
Megan Wachs
55c992bb3a
Use FoldRight() instead of for loop
2016-08-01 16:56:33 -07:00
Megan Wachs
8db2e8829f
Allow aggregate CONFIG on Command Line
2016-08-01 14:24:16 -07:00
Andrew Waterman
fe670e5421
Stop using deprecated FileSystemUtilities to create files
2016-07-31 18:04:56 -07:00
Andrew Waterman
832e56d3c7
Fix toBits/toUInt/toSInt deprecation warnings
2016-07-31 17:13:52 -07:00
Andrew Waterman
a6e009d8de
[rocket] Fix frontend mask when fetchWidth == 1
2016-07-31 15:21:17 -07:00
Andrew Waterman
c49dad2e9d
Improve PTW QoR
2016-07-29 17:56:42 -07:00
Andrew Waterman
cc635c386f
Make Chisel3 the default version for SBT
2016-07-29 17:56:42 -07:00
mwachs5
4465260469
Update README.md
...
- List things that are no longer submodules as subpackages instead
- clean up some formatting issues
2016-07-29 17:56:42 -07:00
Andrew Waterman
058396aefe
[rocket] Implement RVC
2016-07-29 17:56:42 -07:00
Andrew Waterman
c465120610
[rocket] use more standard pattern for computing integer min
2016-07-29 17:56:42 -07:00
Andrew Waterman
ffac86b041
[rocket] only write badaddr on certain exceptions
2016-07-29 17:56:42 -07:00
Andrew Waterman
0d3d9fca25
[rocket] Allow zapping of BTB entries
...
This is necessary to guarantee forward progress with RVC, since if the
BTB keeps mispredicting, the processor might never successfully
fetch both halves of a misaligned instruction.
2016-07-29 17:56:42 -07:00
Andrew Waterman
8e0392f24b
[rocket] don't hard-code instruction width in BHT
2016-07-29 17:56:42 -07:00
Howard Mao
f34b0b0447
make sure L2 tracker doesn't read data array again if data buffer already filled
2016-07-29 16:47:31 -07:00
Howard Mao
2891eb879a
add MergedPutRegression to uncover merged put after release bug in L2
2016-07-29 16:42:28 -07:00
Howard Mao
064020bdd7
make sure Memtest generators write different data to each address
2016-07-29 14:22:46 -07:00
Howard Mao
5a3beca097
add RepeatedGetRegression to uncover L2 merged get miss bug
2016-07-28 19:58:47 -07:00
Howard Mao
cb86aaa46b
fix trace generator addresses
2016-07-28 17:56:14 -07:00
Andrew Waterman
8a7fc75b53
fix metadata race in blocking L1 DCache
2016-07-28 17:54:28 -07:00
Howard Mao
bd5972503f
move groundtest/scripts to top-level scripts/
2016-07-28 11:36:55 -07:00
Howard Mao
478f494626
Merge remote-tracking branch 'groundtest/master' into mono-repo
2016-07-28 11:28:06 -07:00
Howard Mao
a5b88d0bdc
Merge remote-tracking branch 'junctions/master' into mono-repo
2016-07-28 11:27:47 -07:00
Howard Mao
373fd427dc
Merge remote-tracking branch 'rocket/master' into mono-repo
2016-07-28 11:27:29 -07:00
Howard Mao
ce242b8f3f
Merge remote-tracking branch 'uncore/master' into mono-repo
2016-07-28 11:23:31 -07:00
Howard Mao
aefba04fb3
get rid of submodules in preparation for merging
2016-07-28 11:21:08 -07:00
Howard Mao
6de2a3e3b1
get rid of fpga-zynq submodule
2016-07-28 11:07:47 -07:00
Howard Mao
fe51a35fa9
a few more submodule bumps
2016-07-28 09:25:59 -07:00
Howard Mao
bf35f980a6
make sure PTE cache is power of 2 in size to satisfy PseudoLRU requirement
2016-07-27 18:40:38 -07:00
Howard Mao
fbcc7317cf
make sure PseudoLRU is given power of 2 ways
2016-07-27 18:39:33 -07:00
Howard Mao
15d1aa9346
make sure TrackerAllocationIO addr_block has correct direction set
2016-07-27 16:47:22 -07:00
Howard Mao
9c89290efc
fix LRSC issue (fixes issue #86 )
2016-07-26 22:25:04 -07:00
Howard Mao
0bd7ef1278
re-enable SCs inflight with other requests
2016-07-26 22:21:41 -07:00
Howard Mao
df07771fa0
add uncached noise generator to TraceGen
2016-07-26 22:21:10 -07:00
Howard Mao
dcfcac9530
fix LRSC issue (RocketChip issue #86 )
...
It was possible that the result of a store-conditional could get lost if it
did not depend on the result of the corresponding load-reserved.
This was because the MSHR does not update the client state based on the
secondary requests. So the LR would acquire the line in clientExcusiveClean,
but then we would fail to update the metadata array to change the state
to clientExclusiveDirty.
The solution is to track whether a secondary acquire would cause the
line to be dirty. If so, use M_XWR instead of the primary command to
generate the update coherence state.
2016-07-26 18:41:52 -07:00
Howard Mao
ecd1af326c
fix L2 deadlock bug and add more advanced trace generator
2016-07-26 12:43:08 -07:00
Howard Mao
82bbbf908d
Fix L2 Writeback deadlock issue
...
The deadlock condition occurs when the acquire tracker attempts to
request a writeback while the writeback unit is still busy and a
voluntary release for the block to be written back is coming in.
The voluntary release cannot be accepted because it conflicts with the
acquire tracker. The acquire tracker can't merge the voluntary release
because it is waiting to send the writeback. The writeback can't
progress because the release it is waiting on is behind the voluntary
release.
The solution to this is to break the atomicity guarantee between the
acquire tracker and the writeback unit. This allows the voluntary
release tracker to take the voluntary release before the writeback unit
accepts the conflicting request. This causes a potential race condition
for the metadata array. The solution to this is to have the writeback
unit re-read the metadata after accepting a request.
2016-07-26 12:31:08 -07:00
Howard Mao
1063d90993
make sure L1 and L2 agree on coherence policy
2016-07-25 12:20:49 -07:00
Howard Mao
6a5b2d7f59
fix assembly tests for configurations without VMU and/or user mode
2016-07-22 17:21:57 -07:00
