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
Wesley W. Terpstra
11ec5b2cf4
bram: don't deal with multibeat; rely on the fragmenter
2016-07-22 14:51:05 -07:00
Wesley W. Terpstra
a52d418439
fragmenter: support multi-beat get/put via fragmenting to single-beat operations
2016-07-22 14:48:22 -07:00
Howard Mao
51edd19e85
add U bit to misa register
2016-07-22 14:22:59 -07:00
Howard Mao
75347eed56
some fixes and cleanup to stateless bridge
2016-07-21 19:51:26 -07:00
Howard Mao
9168f35971
clean up the requirements in StatelessBridge
...
* No need to check that release ID bits and acquire ID bits the same
* Check that inner and outer coherence policies match
2016-07-21 19:41:56 -07:00
Colin Schmidt
a43ad522dc
add clock override to tile constructor ( #42 )
...
useful to have upstream so that tape-outs can construct
rocket-chip to have cores on different clocks without
forking rocket
2016-07-21 17:56:52 -07:00
Howard Mao
12067a3b8d
make sure outer probe and finish lines are disconnected
2016-07-21 15:15:44 -07:00
Howard Mao
c38dff0855
add some more warnings about the StatelessBridge
2016-07-21 15:07:10 -07:00
Megan Wachs
c31c650def
If NTiles == 1, only use MEI. Also Create configuration for ManagerToClientStatelessBridge.
2016-07-21 13:54:28 -07:00
Megan Wachs
eb9e998c08
Add ManagerToClientStatelessBridge
2016-07-21 13:49:16 -07:00
Howard Mao
0a1cd64786
fix number of builtin Acquire types
2016-07-21 13:45:20 -07:00
Howard Mao
ffe17cbb2b
bump uncore for L2 bugfix
2016-07-21 12:35:38 -07:00
Howard Mao
20df74d138
generate more L1 voluntary releases in TraceGen
2016-07-21 12:33:55 -07:00
Howard Mao
86e31be820
fix lockup from back to back releases with data
2016-07-21 12:06:58 -07:00
Howard Mao
24ef4e6dea
make sure to use AND not OR for combining finished signals
2016-07-21 12:05:11 -07:00
Howard Mao
d77d0ddc5d
rename CacheTest.scala to CacheFillTest.scala
2016-07-20 20:37:45 -07:00
Howard Mao
d56362f04c
add configuration checks for TraceGen
2016-07-20 10:37:10 -07:00
Howard Mao
959630630a
give LCG an inc signal and add object constructors
2016-07-20 10:36:28 -07:00
Howard Mao
b013925ab0
make sure ReleaseRegression starts only on io.start
2016-07-19 15:42:45 -07:00
Wesley W. Terpstra
9ae23f18bd
rocket: support asynchronous external busses
2016-07-19 14:52:56 -07:00
