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
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
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
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
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
86e31be820
fix lockup from back to back releases with data
2016-07-21 12:06:58 -07:00
Wesley W. Terpstra
fa8317fec1
debug: add clock crossing primitives
2016-07-19 14:52:43 -07:00
Henry Cook
e406d1bd73
Make probeCopy have same behavior as probeDowngrade
2016-07-18 18:22:49 -07:00
Howard Mao
9eeb1112d4
fix Bufferless irel_vs_iacq_conflict signal
2016-07-18 17:38:20 -07:00
Howard Mao
e5cccc0526
don't update xact_vol_irel if not a voluntary irel
2016-07-18 17:05:23 -07:00
Howard Mao
84098db81f
add a TileLinkTestRAM
2016-07-15 11:03:26 -07:00
Howard Mao
b122a54c32
don't allow more outer IDs than inner IDs
2016-07-13 12:42:28 -07:00
Howard Mao
de1e25f3d1
reduce usage of CAMs in converters
2016-07-13 11:20:50 -07:00
Howard Mao
8aa73915a1
put locking arbiter back into converter
2016-07-08 09:31:33 -07:00
Howard Mao
a50ba39ea7
Revert "add buffering and locking to TL -> Nasti converter"
...
This reverts commit 2109a48e18719383942d535ff4c1d0a859dcc424.
Conflicts:
src/main/scala/converters/Nasti.scala
2016-07-08 09:31:33 -07:00
Andrew Waterman
70b677ecda
Vec considered harmful; use isOneOf instead ( #64 )
...
Vec is heavyweight and really should only be used for I/O and
dynamic indexing. A recurring pattern in uncore is
Vec(const1, const2, const3) contains x
which is nice but has a deleterious effect on simulation copilation
and execution time. This patch proposes an alternative:
x isOneOf (const1, const2, const3)
x isOneOf seqOfThings
I think it's also more idiomatic.
This is just a prototype; I'm not wed to the name or implementation.
2016-07-07 19:25:57 -07:00
Howard Mao
16a6b11081
fix bug in AXI -> TL converter
2016-07-07 14:34:24 -07:00
Howard Mao
7cc64011fb
simplify amo_mask generation
2016-07-07 12:14:45 -07:00
Howard Mao
1c5e7be75b
make sure Nasti write channel id is set correctly
2016-07-07 12:14:02 -07:00
Howard Mao
8ccc50a8f0
fix IdMapper and TL -> NASTI converter
2016-07-07 10:16:44 -07:00
Howard Mao
5d8d5e598b
add buffering and locking to TL -> Nasti converter
2016-07-06 16:51:45 -07:00
Howard Mao
b10d306b4a
add option to log L2 cache transactions for easier debugging
2016-07-06 14:59:09 -07:00
Howard Mao
64afc795fd
make sure voluntary releases don't get allocated to L2WritebackUnit
2016-07-06 14:10:45 -07:00
Howard Mao
b105076996
fix ID mapper to disallow two in-flight requests with the same inner ID
2016-07-05 17:41:46 -07:00
Howard Mao
af76837970
conform to new NastiWriteDataChannel interface
2016-07-05 17:41:46 -07:00
Albert Ou
4c07aedfad
Rewrite BRAMSlave to infer a single BRAM instance
2016-07-05 14:21:21 -07:00
Howard Mao
702444709a
make sure pending bits updated for all releases
2016-07-05 12:08:22 -07:00
Howard Mao
06ed9c5794
add a single-entry queue in front of acquire and release for bufferless broadcast hub
2016-07-05 12:08:22 -07:00
Howard Mao
67bac383e3
hopefully fixed last bugs in Bufferless
2016-07-05 12:08:22 -07:00
Howard Mao
a35388bc27
fix merging of same xact ID puts/gets
2016-07-05 12:08:22 -07:00
Howard Mao
51f7bf1511
fix Bufferless voluntary release issue
2016-07-05 12:08:22 -07:00
Howard Mao
afc51c4a35
make sure TL -> NASTI converter handles multibeat transactions properly
2016-07-05 12:08:22 -07:00
Andrew Waterman
85808f8cbb
Clean up PseudoLRU code
2016-07-02 15:09:12 -07:00
Howard Mao
caa9ca24b9
NASTI -> TL converter also uses ID mapper
2016-07-01 18:11:29 -07:00
Wesley W. Terpstra
39bee5198d
Nasti Puts: decode wmask to determine addr_byte() and op_size()
...
This change is TL0 specific; TL2 knows the op_size, and can use
this to do a much simpler one-hot decode of the address.
2016-07-01 16:49:32 -07:00
Howard Mao
e163a23583
fix another bug in Widener
2016-07-01 16:24:48 -07:00
Howard Mao
10a46a36ae
fix full_addr() function in TileLink
2016-07-01 15:17:41 -07:00
Howard Mao
61e3e5b45a
more WIP on fixing Bufferless
2016-06-30 18:29:51 -07:00
Howard Mao
0eedffa82f
WIP: Fix BufferlessBroadcastHub
2016-06-30 18:29:51 -07:00
Howard Mao
ce46f523c9
make sure Widener uses proper parameters to generate acquire/grant
2016-06-30 18:17:16 -07:00
Howard Mao
a0b1772404
change TileLinkWidthAdapter interface
2016-06-30 15:50:23 -07:00
Howard Mao
9feca99d5d
make PutBlock wmask argument match Put
2016-06-28 13:10:46 -07:00
Howard Mao
b936aa9826
refactor uncore files into separate packages
2016-06-28 13:10:46 -07:00
Andrew Waterman
97e74aec3a
Merge RTC and PRCI
2016-06-27 23:06:07 -07:00
Howard Mao
ec5b9dfc86
make sure trackers can handle case where there are no caching clients
2016-06-27 16:29:51 -07:00
Howard Mao
a93a70c8ec
make sure merged voluntary releases are handled properly
2016-06-27 11:40:32 -07:00
Andrew Waterman
354b81c8fe
Remove legacy HTIF things
...
The SCR file is gone, too, because it is tightly coupled. The
general concept could be revived as a module that somehow connects
to (or is contained by) the debug module.
2016-06-23 13:17:11 -07:00
