riscv/rocket-chip
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688 Commits

Author SHA1 Message Date
Andrew Waterman
791a27748b Update firrtl and remove firrtl hack in plic 2016-08-02 15:19:48 -07:00
Howard Mao
b7723f1ff8 make unit tests local to the packages being tested 2016-08-01 17:02:00 -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
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
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
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