riscv/rocket-chip
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1504 Commits

Author SHA1 Message Date
Richard Xia
bab504cc3f Add various granular and composable configs. 2016-11-18 11:30:07 -08:00
Henry Cook
5bd343bac8 [rocket] d_last && d.fire() => d_done 2016-11-17 18:42:59 -08:00
Henry Cook
1ddccb1b33 [rocket] add TODO for single cycle ack 2016-11-17 18:42:59 -08:00
Henry Cook
94086f2270 [tl2] broadcast hub probe port width bugfix 2016-11-17 18:42:59 -08:00
Henry Cook
960c2723ab [tl2] MemoryOpCategories: use def to supply Cat'd consts 2016-11-17 18:42:59 -08:00
Wesley W. Terpstra
179c93db42 tilelink2 broadcast: make it controlled via Config 2016-11-17 17:26:49 -08:00
Wesley W. Terpstra
f4ca5ea1f3 rocketchip: match simulated memory width to ExtMem.beatBytes 2016-11-17 15:40:47 -08:00
Wesley W. Terpstra
12d0d8bea2 rocketchip: remove obsolete bus configuration 2016-11-17 14:30:15 -08:00
Wesley W. Terpstra
c82b371354 rocketchip: remove obsolete TL1 config 2016-11-17 14:24:45 -08:00
Wesley W. Terpstra
dfc3a0dafb tilelink2: do not depend on obsolete TL1 configuration 2016-11-17 14:07:53 -08:00
Wesley W. Terpstra
8a0ecdaaad groundtest: ComparatorConfig lives again 2016-11-17 11:07:49 -08:00
Henry Cook
92e233d596 [groundtest] testramaddr constant in package 2016-11-16 18:42:56 -08:00
Henry Cook
e1992d7c55 [rocket] grant addr bugfix 2016-11-16 18:12:06 -08:00
Henry Cook
84f249bd03 [rocketchip] BigInt cast 2016-11-16 18:11:06 -08:00
Henry Cook
da7ecfd189 [rocket] probeack vs probeackdata bugfix 2016-11-16 17:27:02 -08:00
Henry Cook
75d4347192 [groundtest] runs tests with new coreplex and top 2016-11-16 17:05:53 -08:00
Henry Cook
24e3216fcf coreplex: allow zero interrupt sink/sources 2016-11-16 16:50:36 -08:00
Henry Cook
479bc82f03 tilelink2 Broadcast: improve bufferless throughput 2016-11-16 16:50:36 -08:00
Henry Cook
408e78e35e rocketchip Periphery: ExtMem and ExtBus Configs 2016-11-16 16:50:30 -08:00
Henry Cook
1f51564577 [rocket] dcache probe ack data bugfix 2016-11-16 14:25:21 -08:00
Henry Cook
66a2c5544e [rocket] L1D acquire addr bugfix 2016-11-16 13:38:52 -08:00
Henry Cook
c5e03c9c76 [rocket] dcache release addr bugfix 2016-11-16 13:14:51 -08:00
Wesley W. Terpstra
06a7b95d0d tilelink2 broadcast: support bufferless Config 2016-11-16 12:25:11 -08:00
Wesley W. Terpstra
3703ed39f7 groundtest: PTW needs atomics 2016-11-16 12:16:54 -08:00
Wesley W. Terpstra
5d2e637a4a tilelink2 Legacy: uncached TL never needs manager_xact_id 2016-11-16 12:16:25 -08:00
Wesley W. Terpstra
10e459fedb rocket: change connection between rocketchip and coreplex 
* rtc and dtm are now crossed half-and-half on the two sides
* groundtest no longer uses riscv platform traits
 2016-11-15 18:27:52 -08:00
Henry Cook
2d68f12115 [tl2] give groundtest tile some output nodes 2016-11-14 18:09:40 -08:00
Wesley W. Terpstra
ab3dafb8bc Monitor: restore Probe&Acquire checks 2016-11-14 15:36:52 -08:00
Wesley W. Terpstra
385b5d5698 axi4: default should be GET_EFFECTS 2016-11-14 15:19:39 -08:00
Henry Cook
0e30364f56 WIP 2016-11-14 13:39:01 -08:00
Henry Cook
c0efd247b0 [tl2] expand firstlast api and L1WB bugfix 2016-11-14 12:12:31 -08:00
Henry Cook
b7730d66f2 WIP bugfixes: run until corrupted WB data (beats repeated) 2016-11-11 18:34:48 -08:00
Henry Cook
71315d5cf5 WIP scala compile and firrtl elaborate; monitor error 2016-11-11 13:07:45 -08:00
Henry Cook
afa1a6d549 WIP uncore and rocket changes compile 2016-11-10 15:57:29 -08:00
Wesley W. Terpstra
32fd11935c rocketchip: use TL2 and AXI4 for memory subsytem 2016-11-04 13:36:47 -07:00
Wesley W. Terpstra
9d77e34bee tilelink2 Filter: make transfer cap robust against large filters 2016-11-04 13:35:36 -07:00
Wesley W. Terpstra
4a2cf6431b coreplex: make 'mem' port an Option until we can use a Seq 2016-11-04 13:35:36 -07:00
Wesley W. Terpstra
8f757a9135 coreplex: rename BankedL2 trait to BankedL2CoherenceManagers 2016-11-04 13:35:36 -07:00
Wesley W. Terpstra
b8df59f43b tilelink2 Broadcast: support "bufferless" implementation 2016-11-04 13:35:36 -07:00
Wesley W. Terpstra
14800f8fb4 tilelink2 Broadcast: only support caching readable devices 2016-11-04 13:35:36 -07:00
Wesley W. Terpstra
d03046d11c coreplex: fix BankedL2 line width 2016-11-04 13:35:36 -07:00
Wesley W. Terpstra
da3cc3b299 coreplex: TileLink2 l1tol2 memory channels 2016-11-03 22:18:28 -07:00
Wesley W. Terpstra
0f3947bb86 tilelink2 Broadcast: add special case handling for 0 cached clients 2016-11-03 22:18:28 -07:00
Wesley W. Terpstra
ba3c83287f tilelink2 Xbar: merge the AddressSets of fractured managers 2016-11-03 22:18:28 -07:00
Wesley W. Terpstra
55326c29bb tilelink2: Filter adapter removes some of the address space 2016-11-03 22:18:23 -07:00
Wesley W. Terpstra
86ba94781b tilelink2: broadcast coherence manager 2016-11-03 14:37:19 -07:00
Wesley W. Terpstra
d067e87a7d tilelink2 Parameters: sinkId is per port, not per manager 2016-11-03 14:37:17 -07:00
Wesley W. Terpstra
ed4224dde4 tilelink2 AtomicAutomata: fix AccessAck on same cycle as PutFull 
If we send out the PutFull portion of an AMO, the slave is allowed
to respond with AccessAck on the same cycle. In this case, we are
still in the AMO state, but must still match the D response.
 2016-10-31 15:17:10 -07:00
Wesley W. Terpstra
f83d1d0aaf coreplex: rename trait CoreplexRISCVPlatform 
This makes it clear we are talking about the devices one expects in the
platform, not the ISA.
 2016-10-31 11:42:47 -07:00
Wesley W. Terpstra
f943c5d6ef rocketchip: connect rtcTick to coreplex 2016-10-31 11:42:47 -07:00
Wesley W. Terpstra
4a0b29850c coreplex: reattach clint interrupt 2016-10-31 11:42:47 -07:00
Wesley W. Terpstra
a12fea51e8 Plic: skip reserved interrupt in interrupt map printout 2016-10-31 11:42:47 -07:00
Wesley W. Terpstra
aabd17d935 rocketchip: must create bundles within Module scope 
1. Bundles be created after base class Module constructor runs
2. Bundles must be created before Module(...) runs

Solution: pass a bundle constructor to the cake base class

Require the constructor to take a parameter so people don't use it by
accident; they should get a type error.

Consistently name all the cake arguments with an _io, _coreplex, _outer,
so that they don't shadow the base class variables you should be using.
 2016-10-31 11:42:47 -07:00
Wesley W. Terpstra
d52615c39e coreplex: one IntNode per tile 2016-10-31 11:42:47 -07:00
Wesley W. Terpstra
e97844f71e coreplex: make it possible to override the ConfigString 2016-10-31 11:42:47 -07:00
Wesley W. Terpstra
4de1822470 rocketchip: avoid using the nearly defunct GlobalAddrMap 2016-10-31 11:42:47 -07:00
Wesley W. Terpstra
688e1bffdf rocketchip: pull rtcTick out of the coreplex 2016-10-31 11:42:47 -07:00
Wesley W. Terpstra
5bca13ebdb rocketchip: use self-type constraints 2016-10-31 11:42:47 -07:00
Wesley W. Terpstra
d51b0b5c02 rocketchip: use self-type 2016-10-31 11:42:47 -07:00
Wesley W. Terpstra
841a31479a coreplex: fix TinyConfig 2016-10-31 11:42:47 -07:00
Wesley W. Terpstra
ba529c3716 rocketchip: use TileLink2 interrupts 2016-10-31 11:42:47 -07:00
Wesley W. Terpstra
6505431eac coreplex: use self-type constraints 2016-10-31 11:42:47 -07:00
Wesley W. Terpstra
ac886026e6 rocketchip: reduce number of type parameters 2016-10-31 11:42:47 -07:00
Wesley W. Terpstra
043ed48c8c tilelink2 HintHandler: delay answers to help TL1 legacy clients 2016-10-31 11:42:47 -07:00
Wesley W. Terpstra
72a7948ad2 rocketchip Periphery: move atomics before WidthWidget => 64-bit AMOs 2016-10-31 11:42:47 -07:00
Wesley W. Terpstra
015c3b862a diplomacy: print out bus widths on edges in agent graph 2016-10-31 11:42:47 -07:00
Wesley W. Terpstra
92ee498521 rocket scratchpad: support atomics 2016-10-31 11:42:47 -07:00
Wesley W. Terpstra
0cc00e7616 regressions: test scratchpad 2016-10-31 11:42:47 -07:00
Wesley W. Terpstra
d2e9fa8ec6 Plic: remove path from ready to bits 2016-10-31 11:42:47 -07:00
Wesley W. Terpstra
545154c1c3 groundtest: make it happy with TL2 addressing 2016-10-31 11:42:47 -07:00
Wesley W. Terpstra
9a26cb7ec7 Debug: mark the debug device executable 2016-10-31 11:42:47 -07:00
Wesley W. Terpstra
e9725aea2f rocketchip: all of the address map now comes from TL2 2016-10-31 11:42:44 -07:00
Wesley W. Terpstra
401fd378b4 rocketchip: include devices from cbus in ConfigString 2016-10-31 11:42:13 -07:00
Wesley W. Terpstra
b68bc449e7 rocket: put a Fragmenter infront of the scratchpad 2016-10-31 11:42:13 -07:00
Wesley W. Terpstra
a73aa351ca rocketchip: fix all clock crossings 2016-10-31 11:42:13 -07:00
Wesley W. Terpstra
825c253a72 rocketchip: move TL2 and cake pattern into Coreplex 2016-10-31 11:42:13 -07:00
Wesley W. Terpstra
89139a9492 Plic: split constants from variables used in config string 2016-10-31 11:42:13 -07:00
Wesley W. Terpstra
11121b6f4c rocket: convert scratchpad to TL2 2016-10-31 11:42:13 -07:00
Wesley W. Terpstra
dddb50a942 BuildTiles: convert to LazyTile 2016-10-31 11:42:13 -07:00
Wesley W. Terpstra
f8a0829134 rocketchip: remove clint; it moves into coreplex 2016-10-31 11:42:13 -07:00
Megan Wachs
5090ff945b DebugModule: Be more paranoid about addressing corner cases. 2016-10-31 11:42:13 -07:00
Wesley W. Terpstra
b99662796d PLIC: converted to TL2 2016-10-31 11:42:13 -07:00
Wesley W. Terpstra
bddfa4d69b Debug: make address configurable 2016-10-31 11:42:13 -07:00
Wesley W. Terpstra
c3dacca39a rocketchip: remove pbus; TL2 has swallowed it completely 2016-10-31 11:42:08 -07:00
Megan Wachs
10d084b9f3 DebugModule: Use the power of RegisterRouter to simplify the DebugROM code. 2016-10-31 11:41:18 -07:00
Wesley W. Terpstra
3df797fcab rocketchip: replace TL1 MMIO with an example of TL2 MMIO 2016-10-31 11:41:18 -07:00
Wesley W. Terpstra
650f6fb23f diplomacy: add BlindNodes for use as external ports 2016-10-31 11:41:18 -07:00
Wesley W. Terpstra
0edcd3304a diplomacy Nodes: leave flipping to the MixedNode implementation 2016-10-31 11:41:18 -07:00
Wesley W. Terpstra
082f338432 diplomacy Nodes: remove useless indirection 2016-10-31 11:41:18 -07:00
Wesley W. Terpstra
ec2d23b8b7 rocketchip: Bundle-slices need access to the outer LazyModule 
We need this change in order for some ports to use parameters that result
from LazyModule diplomacy.

Now you can eat your cake too!
 2016-10-31 11:41:18 -07:00
Wesley W. Terpstra
0ae45d0f24 rocketchip: bundle (=> B) need not be delayed; Module is constructed later 2016-10-31 11:41:18 -07:00
Wesley W. Terpstra
0dbda2f07d rocketchip: remove obsolete pDevices used during TL1=>2 migration 2016-10-31 11:41:18 -07:00
Megan Wachs
af924d8c51 DebugModule: Instantiate TL2 DebugModule in BaseCoreplex 2016-10-31 11:41:18 -07:00
Megan Wachs
d530ef7236 DebugModule: translate to TL2 with {32,64}-bit XLen width 2016-10-31 11:41:18 -07:00
Howard Mao
f0e9a2a081 Fix PutBlock after Release bug 
There is logic in the broadcast hub to skip the outer acquire if there
is an outgoing release, since the data will be written out through the
release channel. However, this will cause an issue in the case of
PutBlock requests. If the tail beats of the PutBlock show up after the
outer release has already been sent, the data will be corrupted.

The fix is to make the outer release block if there are pending
inner PutBlock beats.
 2016-10-28 18:26:34 -07:00
Howard Mao
cb81ea516c add regression test for put-after-release bug 2016-10-28 18:26:34 -07:00
Howard Mao
fa8844d5c3 properly use rocket MT_ constants in regression tests 2016-10-28 18:26:34 -07:00
Andrew Waterman
e45b41b4b6 Don't rely on SeqMem output after read-enable is low 2016-10-27 23:44:10 -07:00
Howard Mao
900a7bbcf1 add PutAtomic support to width adapter 2016-10-26 09:58:26 -07:00
Jacob Chang
fc5eb7cc64 Fixed AsyncFifo with reset messaging 2016-10-25 16:45:08 -07:00
Megan Wachs
fd2d48acda lazy_module: If the user actually specifies a name, just use it without appending module name. 2016-10-25 15:58:09 -07:00
Wesley W. Terpstra
a807c922d0 diplomacy: take names from the outermost common node 2016-10-25 15:58:09 -07:00
Wesley W. Terpstra
fee67c4abf diplomacy: add methods to find {out,in}ner-most common node 2016-10-25 15:58:09 -07:00
Wesley W. Terpstra
67ab27f5a5 diplomacy: guess the LazyModule name from the containing class 2016-10-25 15:58:09 -07:00
Wesley W. Terpstra
4d50733548 tilelink2 ToAXI4: use helper method for a_last (#418) 2016-10-25 10:16:42 -07:00
Wesley W. Terpstra
7dc97674d6 rocketchip: include an socBus between l1tol2 and periphery (#415) 
Sometimes we have high performance devices that go inbetween.
 2016-10-24 23:56:09 -07:00
Wesley W. Terpstra
a5ac106bb8 axi4 ToTL: fix decode error arbitration (#417) 
When selecting between error generation on R and real data on R,
correctly calculate the R backpressure.

This bug manifests when a valid request is immediately followed by
an invalid request, wedging the R channel.
 2016-10-24 22:15:19 -07:00
Wesley W. Terpstra
4c815f7958 tilelink2 Parameters: fix {contains,supports}Safe (#416) 
When there is only one manager, you still want to know if the address
was wrong on the link to that manager!
 2016-10-24 20:37:04 -07:00
Wesley W. Terpstra
8bfd6bcd4d axi4: ensure we accept AR before reporting R (#411) 2016-10-21 21:02:05 -07:00
Colin Schmidt
85f3788ab5 initialize s2_hit to solve #401 2016-10-21 14:53:55 -07:00
Wesley W. Terpstra
7c334e3c34 axi4 ToTL: shorter critical path on Q.bits if errors go first 2016-10-17 01:00:49 -07:00
Wesley W. Terpstra
73010c79a3 axi4 ToTL: handle bad AXI addresses 2016-10-17 00:12:26 -07:00
Wesley W. Terpstra
501d6d689f axi4: Test ToTL 2016-10-16 22:04:06 -07:00
Wesley W. Terpstra
5a1da63b5a axi4: prototype ToTL adapter 2016-10-16 22:04:01 -07:00
Wesley W. Terpstra
72e5a97d40 tilelink2: factor out the OH1ToOH function 2016-10-16 22:04:01 -07:00
Wesley W. Terpstra
d09f43c32f axi4 Bundles: add a size calculation helper 
The old version was wrong.
Inverting before the << has a different width.
This means you end up with high bits set.
 2016-10-16 22:04:01 -07:00
Wesley W. Terpstra
20288729b9 tilelink2 Isolation: cross the valid signals as well 
Refactor the code to be less copy-pasty
 2016-10-14 18:28:36 -07:00
Wesley W. Terpstra
680a944f07 regmapper RegisterCrossing: safe AsyncQueues are overkill here 2016-10-14 18:28:31 -07:00
Wesley W. Terpstra
ac0bb841da AsyncQueue: cope with far reset propagation delay 2016-10-14 18:05:35 -07:00
Wesley W. Terpstra
8f3c2ddfc3 tilelink2 Crossing: these asserts should be done by the AsyncQueue 2016-10-14 16:54:09 -07:00
Wesley W. Terpstra
a82cfb8306 tilelink2: replace addr_hi with address (#397) 
When faced with ambiguous routing of wmask=0, we decided to include
all the address bits. Hopefully in most cases the low bits will be
optimized away anyway.
 2016-10-14 14:09:39 -07:00
Wesley W. Terpstra
4e40f9bb59 tilelink2 Nodes: appease the PC police 2016-10-13 17:02:18 -07:00
Wesley W. Terpstra
54b73aef57 tilelink2: WidthWidget and Fragmenter no longer erase latency 2016-10-13 17:02:18 -07:00
Wesley W. Terpstra
200cf3dd13 tilelink2 Nodes: include some options to test for conformance 2016-10-13 17:02:18 -07:00
Wesley W. Terpstra
5d5b5a66f4 tilelink2 RAMModel: fix a write-bad-data bug 2016-10-13 17:02:17 -07:00
Wesley W. Terpstra
e5a1483358 tilelink2 Fragmenter: eliminate most of the registers on A 2016-10-13 17:02:17 -07:00
Wesley W. Terpstra
99c7003d11 tilelink2: allow preemption of Fragmenter and WidthWidget 2016-10-13 17:02:17 -07:00
Wesley W. Terpstra
b42cfdc9dd tilelink2 Arbiter: there is only one winner 2016-10-13 17:02:17 -07:00
Wesley W. Terpstra
b6e9b0c558 tilelink2 Arbiter: allow preemption of first beat 2016-10-13 17:02:17 -07:00
Wesley W. Terpstra
0aebf9e341 tilelink2 ToAXI4: no arbitration path register needed 2016-10-13 17:02:17 -07:00
Wesley W. Terpstra
0e897b905f tilelink2 RegisterRouter: data path register is no longer required 2016-10-13 17:02:17 -07:00
Wesley W. Terpstra
c4eadd3ab3 tilelink2 Monitor: enforce stricter transaction ordering 2016-10-13 17:02:17 -07:00
Wesley W. Terpstra
d8a1163131 tilelink2 Monitor: don't enforce Irrevocable any more 2016-10-13 17:02:17 -07:00
Wesley W. Terpstra
405f66da32 tilelink2 WidthWidget: cope with Decoupled inputs 2016-10-13 17:02:17 -07:00
Wesley W. Terpstra
e2e72ac979 tilelink2 Fragmenter: cope with Decoupled input 2016-10-13 17:02:17 -07:00
Wesley W. Terpstra
023c6402e9 tilelink2: switch to DecoupledIO syntax 2016-10-13 17:02:17 -07:00
Wesley W. Terpstra
4c1c52486b axi4 Fragmenter: handle more inflight AXI requests than we have space 2016-10-13 15:52:32 -07:00
Wesley W. Terpstra
8005266131 axi4 Fragmenter: refine sideband FSM for case of last fragment 2016-10-13 15:52:32 -07:00
Wesley W. Terpstra
19064e602b axi4 Fragmenter: align all output accesses 
We promised the output is aligned. Make good on that!
 2016-10-13 15:52:27 -07:00
Wesley W. Terpstra
84be93f9f3 axi4 Fragmenter: confirm correct handling of last 2016-10-13 14:01:23 -07:00
Wesley W. Terpstra
1c79a23a8b axi4 Fragmenter: initialize error response to 0 2016-10-13 13:46:24 -07:00
Wesley W. Terpstra
958af132ba axi4 Fragmenter: optimize dynamic slave lookup 2016-10-12 17:29:38 -07:00
Wesley W. Terpstra
11169d155c axi4: add a Buffer to put between nodes 2016-10-12 17:08:52 -07:00
Wesley W. Terpstra
a9a3f7dd4e tilelink2 RAMModel: include name of test in output 2016-10-12 17:08:52 -07:00
Wesley W. Terpstra
345eefd81b axi4: include unit tests 2016-10-12 17:08:52 -07:00
Wesley W. Terpstra
a6c6d99848 axi4: prototype Fragmenter 2016-10-12 17:08:49 -07:00
Wesley W. Terpstra
c918aa6d89 axi4: name AdapterNode parameters properly 2016-10-12 17:02:02 -07:00
Wesley W. Terpstra
a423f97844 axi4: parameterized AXI master constraint for aligned access 2016-10-12 17:02:02 -07:00
Wesley W. Terpstra
673cf1fdb5 tilelink2 ToAXI4: must create irrevocable D for now 2016-10-12 17:02:01 -07:00
Wesley W. Terpstra
8e92ac32b7 tilelink2 ToAXI4: we need a Queue on B to guarantee deadlock freedom 2016-10-12 17:02:01 -07:00
Wesley W. Terpstra
38b6c1c820 tilelink2 axi4: RegisterRouter can cut ready dependency 2016-10-12 17:02:01 -07:00
Wesley W. Terpstra
dc26736f32 axi4 tilelink2: include minAlignment and maxAddress in slaves 2016-10-12 17:02:01 -07:00
Wesley W. Terpstra
538437384a tilelink2 Fragmenter: combine AccessAck errors 2016-10-12 17:02:01 -07:00
Wesley W. Terpstra
4caa543ad7 tilelink2: Fragmenter should not cut Acquire parameters 
The correct response to misuse is to fail a requirement check.
Pretending that things are not caches could lead to inconsistency.
 2016-10-11 22:38:03 -07:00
Wesley W. Terpstra
6336f94fa2 tilelink2: only caches can support B requests 2016-10-11 22:38:02 -07:00
Wesley W. Terpstra
4a975ca380 tilelink2: add a rightOR to go with our leftOR 2016-10-11 22:38:02 -07:00
Wesley W. Terpstra
b2a5d18e37 diplomacy: simplify address range fragmentation 2016-10-11 22:36:21 -07:00
Wesley W. Terpstra
b0e33f4a39 tilelink2: use TLArbiter in HintHandler 2016-10-10 13:15:28 -07:00
Wesley W. Terpstra
683a2e6785 tilelink2: refactor firstlast helper method 2016-10-10 13:15:28 -07:00
Wesley W. Terpstra
a404cd2abf tilelink2: use NodeHandle to restore Crossing.node API 2016-10-10 13:15:28 -07:00
Wesley W. Terpstra
876609eb0e diplomacy: add NodeHandles to support abstraction 2016-10-10 13:15:25 -07:00
Wesley W. Terpstra
97af07eb3e tilelink2: clarify use of Isolation 2016-10-10 13:13:32 -07:00
Wesley W. Terpstra
76388117bb regmapper: detect improper reset sequencing in RegisterCrossing 2016-10-10 13:13:32 -07:00
Wesley W. Terpstra
b5f5ef69c1 regmapper: eliminate race condition in RegisterCrossing bypass 2016-10-10 13:13:32 -07:00
Wesley W. Terpstra
f250426728 tilelink2: blow up if the channels carry data when they should not 2016-10-10 13:13:32 -07:00
Wesley W. Terpstra
1b09f1360d AsyncQueue: adjust register names to match vals 2016-10-10 13:13:32 -07:00
Wesley W. Terpstra
e7f8a7e9ea AsyncQueue: make it clear that the SyncChain is not Gray specific 2016-10-10 13:13:32 -07:00
Wesley W. Terpstra
52b8121e68 Apply "async_queue: Give names to all the registers which show up in the queue (#390)" 
Adjusted to include names for the new registers.
Changes to RegisterCrossing were discarded.
 2016-10-10 13:13:31 -07:00
Wesley W. Terpstra
ffb734ac0e AsyncQueue: disambiguiate the reset_n signal names 2016-10-10 13:13:31 -07:00
Wesley W. Terpstra
5ee53c61d6 util: clarify an AsyncQueue corner-case 2016-10-10 13:13:31 -07:00
Wesley W. Terpstra
609fd97a71 util: AsyncQueue detect power-down/reset of non-empty queue 2016-10-10 13:13:31 -07:00
Wesley W. Terpstra
75bb94017b util: resynchronize AsyncQueue counters when far side resets 
If the other clock domain is much faster than ours, it's reset
might be shorter than a single cycle in our domain. In that case,
we need to catch the reset and extend it.
 2016-10-10 13:13:31 -07:00
Wesley W. Terpstra
5e2609bdd2 AsyncQueueSource: don't feed reset into normal logic! 
There is no need to block writes to mem during reset.
The Queue must be empty anyway.
 2016-10-10 13:13:31 -07:00
Wesley W. Terpstra
2f6985efd3 crossings: use flip not flip() 
This seems to be the more common API
 2016-10-10 13:13:31 -07:00
Wesley W. Terpstra
6d6aa3eb13 tilelink2: Isolation must also connect reset_n 2016-10-10 13:13:31 -07:00
Wesley W. Terpstra
cb7b16f1a9 util: exchange resets between AsyncQueue source and sink 2016-10-10 13:13:31 -07:00
Wesley W. Terpstra
8c7d469a95 Revert "async_queue: Give names to all the registers which show up in the queue (#390)" 
This reverts commit a84a961a39.

The changes to RegisterCrossing.scala were unneeded after application of this branch.
The name changes made to the AsyncQueue.scala are reapplied at the end of this branch.
 2016-10-10 13:13:31 -07:00
Wesley W. Terpstra
adf5f1807b tilelink2: ToAXI4 bridge added 2016-10-10 11:21:50 -07:00
Wesley W. Terpstra
e856cbe3a6 axi4: SRAM for testing 2016-10-10 11:21:50 -07:00
Wesley W. Terpstra
abb02aa6f4 axi4: add a RegisterRouter for generic devices 2016-10-10 11:21:50 -07:00
Wesley W. Terpstra
2f7081aeaf tilelink2: make mask generation reusable 2016-10-10 11:21:50 -07:00
Wesley W. Terpstra
b29d34038e axi4: diplomacy capable AXI4 2016-10-10 11:21:50 -07:00
Wesley W. Terpstra
dcb9383568 PositionalMultiQueue: work around vcs Lint report 
Lint-[PCTIO-L] Ports coerced to inout
rocket-chip/vsim/generated-src/unittest.UncoreUnitTestConfig.v, 127524
"io_deq_0_valid"
  Port "io_deq_0_valid" declared as output in module "PositionalMultiQueue_16"
  may need to be inout. Coercing to inout.
 2016-10-10 11:21:49 -07:00
Wesley W. Terpstra
5d905a5310 PositionalMultiQueue: shared storage FIFO 1-push n-pop 2016-10-10 11:21:49 -07:00
mwachs5
3a1d8fe482 debug: use a different form of the crossing which doesn't create an AsyncScope (#394) 2016-10-09 20:33:18 -07:00
mwachs5
b5d4b72313 register_crossing: Remove the need for AsyncScope by specifying the master clock and reset. (#393) 2016-10-09 15:51:23 -07:00
Henry Cook
1e69a2dc1c [tilelink2] allow TL monitors to be globally enabled or disabled (#392) 2016-10-09 12:34:10 -07:00
Andrew Waterman
53360f4c2c Disable U-mode by default unless S-mode is present 2016-10-08 21:29:40 -07:00
Andrew Waterman
7f429e8799 Simplify AsyncResetReg 
No need for AsyncSetReg, as AsyncResetReg can be used exclusively with
inverted inputs.
 2016-10-08 21:29:40 -07:00
mwachs5
a84a961a39 async_queue: Give names to all the registers which show up in the queue (#390) 
This is to aid debugging but even more so for backend constraint writers, who generally
need predictable names for registers to set false paths, etc.
 2016-10-08 17:50:50 -07:00
Andrew Waterman
4fd03ffdf1 Fix PopCountAtLeast, un-breaking BTB 2016-10-07 21:20:40 -07:00
Wesley W. Terpstra
e5ac0f717f tilelink2: split isolation gates by direction 2016-10-07 12:03:43 -07:00
Albert Ou
ad618fd55d plic: Fix bit extraction 2016-10-06 18:05:03 -07:00
Andrew Waterman
b1c777c7a2 Fix PLIC enable bit access for #ints >= tlDataBits 2016-10-06 16:21:14 -07:00
Andrew Waterman
c22438b822 Fix an overly strict D$ assertion 2016-10-06 15:52:46 -07:00
Jacob Chang
fe641c14a1 tilelink2: Add support for different noise generator in fuzzer (#386) 2016-10-06 13:20:13 -07:00
Andrew Waterman
5980dc160f Don't allow multiple entries for same PC in BTB 
Necessary for RVC forward-progress guarantee.
 2016-10-06 11:30:45 -07:00
Andrew Waterman
eddf1679f5 Use <> instead of := for bi-directional connections 2016-10-04 22:29:39 -07:00
Andrew Waterman
67593fdf2d Explicitly zap some S-mode CSRs when not using S-mode 2016-10-04 22:29:39 -07:00
Andrew Waterman
968851f7e3 Default to configurable priorities 
up-to-7 levels is kind of arbitrary, but I'm unwilling to introduce
a new Parameter at the moment.
 2016-10-04 22:29:39 -07:00
mwachs5
e952f8f222 asyncqueue: Fix typo in the Async Queue (#381) 
* asyncqueue: Fix typo in the Async Queue that would cause the sync depth to be one less than expected.

* asyncqueue: Typo in the typo fix
 2016-10-04 21:02:06 -07:00
Andrew Waterman
064c9ebdc6 Don't report I$ fetch faults on TLB misses! 2016-10-04 14:37:25 -07:00
Andrew Waterman
516481b68b Improve back-to-back integer multiplication performance 
More exact hazard checking in the decode stage avoids a pipeline flush.
 2016-10-04 14:37:25 -07:00
Andrew Waterman
7b69f1f261 Don't enter D$ flush state machine if grant outstanding 2016-10-04 14:37:25 -07:00
Andrew Waterman
28beb33943 Make any intervening load/store/fence fail an LR/SC sequence 
This catches LR/SC misuses more quickly.
 2016-10-04 14:37:25 -07:00
Yunsup Lee
62954d543e correctly initialize the active flag 2016-10-03 17:56:30 -07:00
Wesley W. Terpstra
6ec2e7c5bd tilelink2: Legacy should preserve the access size (#378) 
* tilelink2: Legacy should preserve the access size
* Legacy: extract missing size information for TL1 Puts
 2016-10-03 17:25:31 -07:00
Wesley W. Terpstra
f05298d9bc tilelink2: move general-purpose code out of tilelink2 package 2016-10-03 16:22:28 -07:00
Wesley W. Terpstra
c85e42a303 tilelink2: Nodes should accept full PortParameters 
We need this for terminal clients/managers that bridge multiple
non-TL2 devices.
 2016-10-03 16:09:49 -07:00
Wesley W. Terpstra
f2ca2178bf graphML: CTO's like colour 2016-10-03 15:05:45 -07:00
Wesley W. Terpstra
fe0875b084 LazyModule: output final verilog Module name 2016-10-03 15:05:45 -07:00
Wesley W. Terpstra
0a4ef66894 BaseTop: record top module; more general than GraphML 2016-10-03 15:05:45 -07:00
Wesley W. Terpstra
52c1a053ff tilelink2 RegisterRouter: test fully Decoupled behaviour 2016-10-02 02:24:02 -07:00
Wesley W. Terpstra
422e6357a4 tilelink2 RegisterCrossing: Queues go from RV to Irrevocable 
AsyncQueue is still a Queue.
 2016-10-02 02:24:02 -07:00
Wesley W. Terpstra
02f89fb530 RegMapper: clarify interface is DecoupledIO 2016-10-02 02:24:02 -07:00
Wesley W. Terpstra
8a268268ad tilelink2 RegField: clarify restrictions on functions 
RegMapper is fundamentaly DecoupledIO.
Let the user take advantage of this.
Clarify that rules on data handling.
 2016-10-02 02:24:02 -07:00
Wesley W. Terpstra
bff0ffa428 tilelink2 RegisterRouter: fix output data glitches 
If a device changes a register while it's being read but not yet accepted,
this an lead to 'data' changing while 'valid' is high. A violation. The
problem is that RegMapper is fundamentally DecoupledIO. So fix it with a
Queue.
 2016-10-02 02:24:02 -07:00
Andrew Waterman
e0188f8aa4 Don't implicitly fence on CSR instructions 
CSRs that have an effect on I/O should use an explicit FENCE.
 2016-10-01 19:44:10 -07:00
Andrew Waterman
b772edcb1b Allow hit-under-MMIO and multiple MMIOs in blocking D$ 
The latter feature is by default disabled, since there aren't enough
ID bits.
 2016-10-01 19:44:05 -07:00
Megan Wachs
28eba9b5ac clint/plic: Move the default addresses 2016-10-01 15:46:55 -07:00
mwachs5
9a381e88d1 Suggest sane names for common objects (#369) 
* Suggest sane names for common objects frequently instantiated with factory methods

* Suggest names for common primitives using more Scala-esque Options
 2016-09-30 16:19:25 -07:00
Wesley W. Terpstra
0ebab0976a tilelink2 Isolation: add enable signal (#368) 2016-09-30 04:54:40 -07:00
Wesley W. Terpstra
d3547a6193 tilelink2: Isolation gate insertion module 2016-09-30 01:50:33 -07:00
Wesley W. Terpstra
9b0654be52 tilelink2 Crossing: helpful constructor objects 2016-09-30 01:48:47 -07:00
Wesley W. Terpstra
80f7bb49e3 tilelink2: helper objects operate on OutwardNodes 2016-09-30 01:39:35 -07:00
Howard Mao
4b86802b1a change the configuration interface of SlowIO 2016-09-29 22:16:53 -07:00
Wesley W. Terpstra
6d8c965f04 tilelink2 Crossing: cut the crossing between clock domains 2016-09-29 17:35:10 -07:00
Wesley W. Terpstra
20f42a8762 tilelink2: reuse the halves of the AsyncQueue 2016-09-29 17:35:08 -07:00
Wesley W. Terpstra
8e4c1e567c tilelink2: add types for a TL clockless interface 2016-09-29 17:33:11 -07:00
Wesley W. Terpstra
02ce8c2ca4 tilelink2 Nodes: rename RootNode => BaseNode 2016-09-29 17:33:11 -07:00
Wesley W. Terpstra
754fcf9831 tilelink2: rename BaseNode to SimpleNode 2016-09-29 17:33:11 -07:00
Wesley W. Terpstra
cfdb8ca797 tilelink2 LazyModule: remove obsolete connect method 2016-09-29 17:33:11 -07:00
Wesley W. Terpstra
f2e438833c tilelink2 Nodes: generalize a node into inner and outer halves 
This lets us create nodes which transform from one bus to another.
 2016-09-29 17:33:11 -07:00
Andrew Waterman
2bdf8c2be7 Merge branch 'master' into move-to-util 2016-09-29 14:42:11 -07:00
Howard Mao
ab3219cf6e don't use Scala to Chisel implicit conversions outside of rocket 2016-09-29 14:35:42 -07:00
Howard Mao
9910c69c67 Move a bunch more things into util package 
A lot of utility code was just being imported willy-nilly from one
package to another. This moves the common code into util to make things
more sensible. The code moved were

 * The AsyncQueue and AsyncDecoupledCrossing from junctions.
 * All of the code in rocket's util.scala
 * The BlackBox asynchronous reset registers from uncore.tilelink2
 * The implicit definitions from uncore.util
 2016-09-29 14:23:42 -07:00
Andrew Waterman
e928b741ce Default mtvec=0, not None 
Setting it to None was a mistake.  It makes it far harder to
diagnose boot bugs, as you end up fetching from random addreses
after trapping.
 2016-09-29 13:52:41 -07:00
Megan Wachs
45bd63fcc6 jtag: Prevent Debug RAM accesses from wrapping around, and bring the DTM closer to the Debug Spec 2016-09-29 13:49:14 -07:00
Megan Wachs
449d689a4e jtag: Connect the JTAG DTM side of the synchronizer! 2016-09-29 13:48:55 -07:00
Yunsup Lee
0924f8adb0 print out assigned inerrupt ranges 2016-09-29 11:59:32 -07:00
Yunsup Lee
4c3e8ec1b4 assign interrupt ranges deterministically 2016-09-29 11:59:32 -07:00
Henry Cook
7bca99a27a [tilelink2] Add unit test configs to regression 2016-09-28 18:02:04 -07:00
Henry Cook
32f3f94882 [tilelink2] Fix zero-width wires in RAMModel. 2016-09-28 18:02:04 -07:00
Henry Cook
69e121260e [tilelink2] Add unit tests for many TL2 components 
These tests mostly use the Fuzzer and RAMModel to check that adapters
correctly handle randomly generated legal traffic.
 2016-09-28 18:02:04 -07:00
Henry Cook
81123f84c9 [tilelink2] Make map generation in RRTests a def so that multiple RRTests can be instantiated as part of the same unit test suite. (#356) 2016-09-27 18:06:21 -07:00
Howard Mao
c45cc76cef Get rid of remaining MemIO code 
The only thing we were still using it for was for the MIFDataBits
and MIFTagBits parameters. We replace these with EdgeDataBits and
EdgeIDBits.
 2016-09-27 16:28:17 -07:00
Howard Mao
18e7ea89f2 Get rid of broken groundtests 
The NastiConverterTest, PCIeMockupTest, and DirectGroundtest
configurations have been broken by recent changes.

The NastiConverterTest has been superseded by a unit test and the
other two were only created for an attempt at FPGA debugging.
They weren't actually very useful for that purpose, so might as well get
rid of them.
 2016-09-27 16:28:17 -07:00
Howard Mao
c77c244016 Get rid of NASTI memory interconnects 
These were made for a previous Hurricane tapeout, but we are now doing
all of the memory routing in TileLink, so they are no longer needed.
 2016-09-27 16:28:17 -07:00
mwachs5
f9e0a7ac24 Merge branch 'master' into async_register_crossing 2016-09-27 15:54:34 -07:00
Wesley W. Terpstra
3926cb936b rocketchip: add pbus width and AMO With classes (#357) 2016-09-27 15:52:13 -07:00
Wesley W. Terpstra
eaea138d0d tilelink2: don't use chisel3 namespace (#355) 2016-09-27 14:44:26 -07:00
Henry Cook
f5502df6ab Merge branch 'master' into async_register_crossing 2016-09-27 14:08:27 -07:00
Wesley W. Terpstra
357d06ac9c tilelink2 WidthWidget: Gets must have their mask adjusted (#353) 
The mask of a Get should also be converted.

This manifested as a bug when going from 32=>64 bits. A large Get
could end up with mask that was not full.
 2016-09-27 14:06:02 -07:00
Megan Wachs
3ce08f40a5 crossing: Remove reset from the logic in Register Crossing because it is no longer needed when the underlying crossings are asynchronously reset. Update the order of operations 2016-09-27 13:36:28 -07:00
Howard Mao
71a9c78e4b add WidthAdapter from AXI slave to Coreplex TL slave 2016-09-27 12:48:01 -07:00
Howard Mao
7d6fb950b6 Give TileLink IDs more sensible names 
* Outermost -> MCtoEdge
 * MMIO_Outermost -> MMIOtoEdge

Then the corresponding parameters objects are

 * L1toL2 -> innerParams
 * L2toMC -> outerMemParams
 * L2toMMIO -> outerMMIOParams
 * MCtoEdge -> edgeMemParams
 * MMIOtoEdge -> edgeMMIOParams
 2016-09-27 12:48:01 -07:00
Howard Mao
8a55521b01 move memory width adapter from coreplex to periphery 2016-09-27 12:48:01 -07:00
Howard Mao
e36441a046 use correct parameters object for MMIO width adapter 2016-09-27 12:48:01 -07:00
Howard Mao
201e247f73 Factor coreplex IO connection into separate trait (#350) 
This would allow, for instance, putting the coreplex on a separate clock
domain and crossing the IOs over through asynchronous queues.

The ExampleMultiClockTop* classes are removed since they no longer fit
into the class hierarchy.
 2016-09-27 11:55:32 -07:00
Howard Mao
6316ebd58f make naming of L2toMC parameter object consistent between coreplex and periphery 2016-09-26 17:28:21 -07:00
Howard Mao
ea9f0a868f TileLink utility objects should not take implicit parameters 
We have a handful of TileLink-related helper objects
(wrappers, unwrappers, width adapters, and enqueuers). Previously, using
them could be error-prone, because you had to make sure the implicit
parameters they took in had the same TLId as the TileLinkIO bundles
passed in as inputs. This is rather silly, we should just use the
parameters in the bundle.
 2016-09-26 17:28:21 -07:00
Howard Mao
803739a95c Make sure coreplex mmio's TLId is correct (thanks to zizztux) 2016-09-26 17:28:21 -07:00
Howard Mao
c741ada619 get TraceGen working again 2016-09-26 17:28:21 -07:00
Wesley W. Terpstra
d9e209365d Tl2 addr width0 (#346) 
* tilelink2 Edges: add accessor methods for address and addr_{hi,lo}

* tilelink2: use addr_lo instead of relying on truncation

Truncation can mess up if the width should be 0, but IS 1.
 2016-09-26 17:00:03 -07:00
Wesley W. Terpstra
72c205b54f tilelink2 AddressSet: add .misaligned(low, size) helper method (#345) 
This helps devices with misaligned ranges still connect to TL2.
 2016-09-26 16:01:09 -07:00
Wesley W. Terpstra
dd9558f45d rocketchip: generate GraphML output 2016-09-26 14:35:46 -07:00
Wesley W. Terpstra
1773eb4405 tilelink2 LazyModule: output GraphML of the bus 2016-09-26 14:35:46 -07:00
Wesley W. Terpstra
35da9320bc tilelink2 Nodes: expose connectivity in RootNode 2016-09-26 14:35:46 -07:00
Wesley W. Terpstra
14cd39e045 rocketchip: rename identically names devices with _%d (#340) 
* rocketchip: rename identically names devices with _%d

If you connect two devices with the same name in TL2 (totally ok there),
when they get put into the TL1 addrmap, one gets silently overwritten.
This renames the second occurance as _1, third as _2, and so on...

* junctions: blow if duplicates add to addrmap
 2016-09-26 13:05:49 -07:00
mwachs5
77a0f76289 Cleanup jtag dtm (#342) 
* debug: Clean up Debug TransportModule synchronizer

With async reset async queues, I feel its safe/cleaner
to remove the one-off "AsyncMailbox verilog black-box
and use the common primitive.

I also added some comments about correct usage of this
block. Probably the 'TRST' signal should be renamed
to make it less confusing, as it requires some processing
of the real JTAG 'TRST' signal.
 2016-09-26 11:10:27 -07:00
mwachs5
8641639873 Async rst async queue (#336) 
* crossing: use async reset

* crossings: asyncqueue needs Asynchronous reset.

* crossing: Actually enable the head of the synchronizer flop chain

* crossing: remove reset from logic. This flop will no longer be written during reset because valid will be low.

* crossing: Tidy up code  & comments
 2016-09-26 11:08:38 -07:00
Wesley W. Terpstra
d787bae0d0 tilelink2 Xbar: decouple ready from valid (#338) 
This moves the Xbar from using custom code to using the Arbiter.
The arbiter has better ready-valid decoupling.
 2016-09-23 16:24:29 -07:00
Wesley W. Terpstra
d175bb314d Periphery: make bus width and arithmetic atomics configurable (#337) 2016-09-23 15:25:58 -07:00
Wesley W. Terpstra
47843d8ec1 tilelink2: maxLgSize should be accurate (#332) 2016-09-22 22:06:22 -07:00
Wesley W. Terpstra
c5706afc11 RegField: remove obsolete split method 
This is now natively supported by the regmap(...) invocation.
 2016-09-22 20:52:47 -07:00
Wesley W. Terpstra
fc44151f10 RegField: add name and description fields 
In the future we can generate interesting documentation and headers.
 2016-09-22 20:52:46 -07:00
Wesley W. Terpstra
5e34b313ee RegMapper: regmap(...) now takes BYTE addresses 
If a device has configurable bus-width, we need a stable way of
enumerating registers. The byte offset stays unchanged.

This change also makes it possible to put an arbitrary number of RegFields
starting at some address which are then chopped up into appropriately bus-
sized registers.
 2016-09-22 20:52:46 -07:00
Wesley W. Terpstra
972ca06729 RegField: remove RegField.bytes; it was dangerous 
The implementation unconditionally drove the register.
This made it incompatible with drivers from the device itself.
Besides, writing only parts of a register at a time is ultra-shady.
 2016-09-22 20:52:46 -07:00
Wesley W. Terpstra
a421469754 tilelink2: change adapters to use TLAdapter(params, defaults)(node) 
This API makes it much more readable when you have multiple adapters
combined into a single line. The arguments for each adapter stay
beside the adapter.

For example, this:
  peripheryBus.node := TLWidthWidget(TLBuffer(TLAtomicAutomata()(TLHintHandler(legacy.node))), legacy.tlDataBytes)
becomes this:
  peripheryBus.node := TLWidthWidget(legacy.tlDataBytes)(TLBuffer()(TLAtomicAutomata()(TLHintHandler()(legacy.node))))
 2016-09-22 20:52:46 -07:00
Howard Mao
22053289ef fix typo rv64iu -> rv64ui 2016-09-22 17:33:35 -07:00
Henry Cook
673efb400d Merge branch 'master' into unittest-config 2016-09-22 16:20:53 -07:00
Henry Cook
1e54820f8c Merge remote-tracking branch 'origin/master' into unittest-config 2016-09-22 16:03:51 -07:00
Henry Cook
411ee378de Provide a GeneratorApp object per user package. Extract RocketTestSuite from coreplex into rocketchip and provide GeneratorApp defaults for other target packages. 2016-09-22 15:59:29 -07:00
Henry Cook
391be8d740 tilelink2 RegisterRouter: minLatency is never more than 1 2016-09-22 15:51:15 -07:00
Wesley W. Terpstra
a3e88fa13a tilelink2 Atomics: optimize the sign-extension circuit 2016-09-22 15:18:54 -07:00
Wesley W. Terpstra
9f1f6fc61f Comparator: tolerate mismatched data when it is undefined 2016-09-22 15:18:54 -07:00
Wesley W. Terpstra
ed038678ef tilelink2 Fuzzer: work around for firrtl/verilator performance issue 
Big Vec()s cause very slow compilation.
 2016-09-22 15:18:54 -07:00
Wesley W. Terpstra
1e7480b6fc tilelink2 Monitor: work around for firrtl/verilator performance issue 
Big Vec()s cause problems for these tools.
 2016-09-22 15:18:54 -07:00
Wesley W. Terpstra
ec2030df31 tilelink2 Legacy: convert TL1 atomic operand size 2016-09-22 15:18:54 -07:00
Wesley W. Terpstra
0a3718881f rocketchip: re-enable testing of atomics 2016-09-22 15:18:54 -07:00
Wesley W. Terpstra
e5da3eb8bb tilelink2 Atomics: support arithmetic atomics 2016-09-22 15:18:54 -07:00
Wesley W. Terpstra
5b80fe5b51 tilelink2 Atomics: support Logical AMOs 2016-09-22 15:18:54 -07:00
Wesley W. Terpstra
4066fbe18f tilelink2 RAMModel: exploit latency to remove bypass 2016-09-22 15:18:54 -07:00
Wesley W. Terpstra
e0ade8c5a9 tilelink2 Atomics: exploit minLatency to eliminate bypass 2016-09-22 15:18:54 -07:00
Wesley W. Terpstra
3bb2580223 tilelink2 Monitor: detect minLatency violations 2016-09-22 15:18:54 -07:00
Wesley W. Terpstra
2b24c4b1b4 tilelink2: most adapters can wipe away latency 2016-09-22 15:18:54 -07:00
Wesley W. Terpstra
c115913624 tilelink2 Buffer: increase the minLatency on ports 2016-09-22 15:18:54 -07:00
Wesley W. Terpstra
05beb20dc4 tilelink2: specify the minLatency for SRAM+RR 2016-09-22 15:18:54 -07:00
Wesley W. Terpstra
44277c1db3 tilelink2 Parameters: include a minLatency parameter for optimization 2016-09-22 15:18:54 -07:00
Wesley W. Terpstra
cf39c32b0e tilelink2 Fuzzer: test Atomics 2016-09-22 15:18:53 -07:00
Wesley W. Terpstra
2b9403633d tilelink2 RAMModel: support (by ignoring) atomics 2016-09-22 15:18:53 -07:00
Wesley W. Terpstra
ce204f604a tilelink2 AtomicAutomata: prototype flow control complete 2016-09-22 15:18:53 -07:00
Wesley W. Terpstra
42b10356fa tilelink2: add a general-purpose Arbiter 2016-09-22 15:18:53 -07:00
Wesley W. Terpstra
7636e772c8 tilelink2 Fuzzer: only generate legal atomics 2016-09-22 15:18:53 -07:00
Wesley W. Terpstra
f5d604d8f8 tilelink2 Parameters: poison ports with unsafe atomics 
We need to detect if an AtomicAutomata's output ever gets mixed
with some other source of operations.
 2016-09-22 15:18:53 -07:00
Wesley W. Terpstra
d1151e2f0f tilelink2 Nodes: split connect into eager and lazy halves 2016-09-22 15:18:50 -07:00
Wesley W. Terpstra
684072023f tilelink2 Monitor: make it a LazyModule in the hierarchy 2016-09-22 15:14:20 -07:00
Wesley W. Terpstra
def497861b tilelink2 Bundles: add 1-way snoop bundles 2016-09-22 15:14:20 -07:00
Wesley W. Terpstra
69a1f8cd1f tilelink2 Monitor: detect if sources are mishandled 2016-09-22 15:14:19 -07:00
Henry Cook
83c08a931d [WIP] Generators for unittest and groundtest; disambiguate groundtest.TrafficGenerator 2016-09-22 14:57:18 -07:00
Henry Cook
47c5d1a992 [WIP] Move RocketTestSuite generation into RocketchipGenerator 2016-09-22 14:31:45 -07:00
Albert Ou
d76b762657 tilelink2 Fragmenter: Mask low bits of D channel addr_lo 
This fixes an issue where passing addr_lo through unchanged triggered
unaligned address assertions in the Monitor.
 2016-09-22 12:36:28 -07:00
Howard Mao
cd96a66ba6 replace verilog clock divider with one written in Chisel 2016-09-22 11:32:29 -07:00
Howard Mao
cbd702e48e make sure junctions and uncore unittests both run 2016-09-21 20:17:52 -07:00
Yunsup Lee
1b1ef3be07 simplify base Coreplex bundle 2016-09-21 18:29:28 -07:00
Yunsup Lee
d2df6397cd rename trc (tile reset clock) bundles to tcr (tile clock reset) 2016-09-21 18:29:28 -07:00
Yunsup Lee
5bb575ef74 rename internal/external MMIO network to cbus/pbus respectively 2016-09-21 18:29:28 -07:00
Henry Cook
64fe010369 [unittest] Config import tweaks 2016-09-21 17:40:39 -07:00
Henry Cook
fd5e00fed9 [coreplex] rename Testing.scala -> RocketTestSuite.scala 2016-09-21 17:35:39 -07:00
Henry Cook
270011b768 [unittest] more Config cleanup 2016-09-21 17:30:14 -07:00
Yunsup Lee
7afd630d3e add multiclock support to Coreplex 2016-09-21 16:55:26 -07:00
Andrew Waterman
8e63f4a1a5 Remove ClockToSignal and vice-versa 
Clock.asUInt and Bool.asClock now suffice.
 2016-09-21 16:17:14 -07:00
Henry Cook
335e866176 [unittest] Parallelize UnitTestSuite (#319) 
* [unittest] Parallelize UnitTestSuite so all tests have their own timer, runs until all finish or any timeout. Adds SimpleTimer.

* [util] Timer spacing cleanup

* [unittest] Remove Config reference to UnitTestTimeout
 2016-09-21 13:05:22 -07:00
Andrew Waterman
12d0c00822 Fix mtime RegField handling 
RegField.bytes was unconditionally overwriting mtime, preventing it
from ever ticking.  Avoid RegField.bytes by splitting mtime into
a Seq of words.
 2016-09-20 15:00:52 -07:00
Henry Cook
40f6f31611 [unittest] further refactor unittest framework 2016-09-20 14:14:30 -07:00
Henry Cook
ed91e9a89b Merge remote-tracking branch 'origin' into testharness-refactor 2016-09-20 13:03:21 -07:00
Henry Cook
b97a0947a9 [rocketchip] enable piecewise Generator output 2016-09-20 12:57:56 -07:00
Yunsup Lee
1a09e46f69 Merge branch 'master' into fix-addrmap-error-msg 2016-09-19 18:08:58 -07:00
Andrew Waterman
3b38736a8e Make BaseTopModule and BaseTopModule abstract 
They aren't meant to be directly instantiated.
 2016-09-19 17:18:35 -07:00
Andrew Waterman
d0572d6aab Allow reset vector to be set dynamically 
A chip's power-up sequence, or awake-from-sleep sequence, may wish to
set the reset PC based upon dynamic properties, e.g., the settings of
external pins.  Support this by passing the reset vector to the Coreplex.
ExampleTop simply hard-wires the reset vector, as was the case before.

Additionally, allow MTVEC to *not* be reset.  In most cases, including
riscv-tests, pk, and bbl, overriding MTVEC is one of the first things
that the boot sequence does.  So the reset value is superfluous.
 2016-09-19 17:18:03 -07:00
Andrew Waterman
e6c1bcfedd Expose carry-out bits from WideCounter 2016-09-19 15:54:17 -07:00
Yunsup Lee
1b26d78114 correctly print out the addrmap overlapping error message 2016-09-19 13:34:58 -07:00
Henry Cook
df442ed82c [rocketchip] avoid pending merge conflict] 2016-09-19 13:24:01 -07:00
Henry Cook
ddcf1b4099 Use PROJECT rather than MODEL in name of binary and generated src files. 2016-09-19 13:23:17 -07:00
Henry Cook
7b8aa6c839 [rocketchip] split out Base and Example tops 2016-09-19 11:00:13 -07:00
Andrew Waterman
a49814c667 Allow WideCounter to not be reset 2016-09-18 18:45:51 -07:00
Wesley W. Terpstra
9817a00ed9 tilelink2: Fuzzer should check address validity before injection 2016-09-17 17:07:21 -07:00
Wesley W. Terpstra
b11839f5a1 tilelink2: differentiate fast/safe address lookup cases 2016-09-17 17:04:18 -07:00
Wesley W. Terpstra
b4baae4214 tilelink2: minimize Xbar decode logic 2016-09-17 16:14:25 -07:00
Wesley W. Terpstra
76d8ed6a69 tilelink2: remove 'strided'; !contiguous is clearer 2016-09-17 16:14:25 -07:00
Wesley W. Terpstra
fa0f119f3c tilelink2: consider the implications of negative address mask 2016-09-17 16:14:22 -07:00
Wesley W. Terpstra
e437508548 tilelink2: track interrupt connectivity like in TL2 2016-09-17 14:43:48 -07:00
Wesley W. Terpstra
01c1886b9d Utils: cacheable only if there is a cache manager 2016-09-17 00:56:21 -07:00
Wesley W. Terpstra
6c3269a1d8 SRAM: optionally (default: true) executable 2016-09-17 00:19:37 -07:00
Wesley W. Terpstra
e749558190 ROM: optionally (default: true) executable 2016-09-17 00:19:09 -07:00
Wesley W. Terpstra
c70045b8b3 Utils: express cacheability from TL2 to TL1 2016-09-17 00:16:40 -07:00
Wesley W. Terpstra
e3d2bd3323 Top: print memory region properties, RWX [C] 2016-09-17 00:16:00 -07:00
Wesley W. Terpstra
5c858685aa Utils: support managers with multiple addresses 2016-09-16 18:03:49 -07:00
Richard Xia
3fdf40c088 Change implicit argument to explicit. 2016-09-16 17:47:31 -07:00
Wesley W. Terpstra
a9382b3116 Periphery: test bench looks for "testram" 2016-09-16 17:47:20 -07:00
Wesley W. Terpstra
b5ce6150c7 Periphery: dynamically create address map + config string for TL2 2016-09-16 17:28:47 -07:00
Wesley W. Terpstra
8876d83640 Prci: preserve Andrew's preferred clint name 2016-09-16 17:28:47 -07:00
Wesley W. Terpstra
a357c1d42e tilelink2: create DTS for devices automagically 2016-09-16 17:28:47 -07:00
Wesley W. Terpstra
2587234838 tilelink2 TLNodes: capture nodePath in {Client,Manager}Parameters 2016-09-16 17:28:47 -07:00
Wesley W. Terpstra
915a929af1 tilelink2: Nodes can now mix context into parameters 2016-09-16 17:28:47 -07:00
Richard Xia
63f13ae7ce Merge remote-tracking branch 'origin/master' into rxia-testharness-refactor 2016-09-16 17:10:52 -07:00
Wesley W. Terpstra
dae0918c85 tilelink2 RegisterRouter: support undefZero 2016-09-16 16:09:00 -07:00
Wesley W. Terpstra
f0f553f227 tilelink2 RegisterRouterTest: work around firrtl warning 
Using io.wready leads to verilog that reads from the output...

Lint-[PCTIO-L] Ports coerced to inout
/scratch/terpstra/federation/rocket-chip/vsim/generated-src/UnitTestHarness.UnitTestConfig.v, 24860
"io_wready"
  Port "io_wready" declared as output in module "RRTestCombinational_29" may
  need to be inout. Coercing to inout.
 2016-09-16 16:09:00 -07:00
Wesley W. Terpstra
3fcc1a4460 tilelink2 RegisterRouterTest: don't couple fire into helpers 2016-09-16 16:09:00 -07:00
Wesley W. Terpstra
2210e71f42 tilelink2 AddressDecoder: validate output of optimization 2016-09-16 16:09:00 -07:00
Wesley W. Terpstra
023a54f122 tilelink2 AddressDecoder: improved heuristic 2016-09-16 16:09:00 -07:00
Andrew Waterman
86b70c8c59 Rename PRCI to CoreplexLocalInterrupter 
That's all it's doing (there wasn't much PRC).
 2016-09-16 14:26:34 -07:00
Wesley W. Terpstra
4b1de82c1d RegField: separate UInt=>bytes and bytes=>regs 2016-09-16 14:24:28 -07:00
Wesley W. Terpstra
943c36954d tilelink2 RegField: .bytes should update more than one byte! 2016-09-16 14:24:24 -07:00
Andrew Waterman
6134384da4 Fix deprecation warnings 2016-09-16 14:24:19 -07:00
mwachs5
a031686763 util: Do BlackBox Async Set/Reset Registers more properly (#305) 
* util: Do Set/Reset Async Registers more properly

The way BlackBox "init" registers were coded before was
not really kosher verilog for most synthesis tools.
Also, the enable logic wasn't really pushed down into the flop.

This change is more explicit about set/reset flops,
again this is only a 'temporary' problem that would go away
with parameterizable blackboxes (or general async reset support).

* Tabs, not spaces, in Makefiles

* util: Fix typos in Async BB Reg Comments
 2016-09-16 13:50:09 -07:00
Andrew Waterman
a94b4af92d Simplify AsyncResetRegVec and make AsyncResetReg companion object 2016-09-16 11:25:10 -07:00
Wesley W. Terpstra
dd19e0911e tilelink2: handle bus width=1 2016-09-15 22:15:11 -07:00
Wesley W. Terpstra
e1d7f6d7df PRCI: always use bus width >= XLen 2016-09-15 22:15:07 -07:00
Wesley W. Terpstra
0e80f7fd0f HintHandler: don't violate Irrevocable rules 2016-09-15 21:28:56 -07:00
Wesley W. Terpstra
f05222a072 testconfigs: disable atomics until AtomicAbsorber finished 2016-09-15 21:28:56 -07:00
Wesley W. Terpstra
38a9421c75 Comparator: don't compare addr_beat when it's irrelevant 2016-09-15 21:28:56 -07:00
Wesley W. Terpstra
669e3b0d96 Regression: fix-up address lookup 2016-09-15 21:28:56 -07:00
Wesley W. Terpstra
30fa4ea956 RegisterRouter: compress register mapping for sparse devices 2016-09-15 21:28:56 -07:00
Wesley W. Terpstra
6b1c57aedc tilelink2: compute minimal decisive mask 2016-09-15 21:28:56 -07:00
Wesley W. Terpstra
fb24e847fd rocketchip: globals are for sissies 2016-09-15 21:28:56 -07:00
Wesley W. Terpstra
644f8fe974 rocketchip: switch to TL2 mmio + port PRCI 2016-09-15 21:28:56 -07:00
Wesley W. Terpstra
91e7da4de3 tilelink2: make RegisterRouter constructor args public 2016-09-15 21:28:56 -07:00
Wesley W. Terpstra
3875e11b26 tilelink2: RegField splits up big registers 2016-09-15 21:28:56 -07:00
Wesley W. Terpstra
5c8e52ca32 devices: TL2 version of ROM 2016-09-15 21:28:56 -07:00
Wesley W. Terpstra
3f30e11f16 tilelink2: Legacy, manager_xact_id does not matter for uncached 2016-09-15 21:28:55 -07:00
Wesley W. Terpstra
ddd93871d8 tilelink2: add an executable manager parameter 2016-09-15 21:28:55 -07:00
Wesley W. Terpstra
9442958d67 tilelink2: allow := on nodes outside the tilelink2 package 2016-09-15 21:28:55 -07:00
Jack Koenig
f2fe437fa4 Use CDEMatchError for improved performance (#304) 2016-09-15 19:47:18 -07:00
Henry Cook
851a336db4 [unittest] split out Config and TestHarness into separate files, minimize imports 2016-09-15 14:25:47 -07:00
Henry Cook
245f8ab76b [util] move LatencyPipe into util 2016-09-15 13:30:34 -07:00
Henry Cook
a70d8c9821 Merge remote-tracking branch 'origin/master' into testharness-refactor 2016-09-15 13:27:07 -07:00
Henry Cook
be9ddae77f make groundtest and unitest peers of rocketchip, with their own packages, harnesses and configs 2016-09-15 13:04:01 -07:00
Henry Cook
c6f252a913 Remove Option from success flag in coreplex; just use a sane default. 2016-09-15 12:19:22 -07:00
Henry Cook
888f6a2a55 Revert "move UnitTest back into rocketchip module" 
This reverts commit f95b8c4ec2.
 2016-09-15 11:48:09 -07:00
Henry Cook
0a65238920 Merge branch 'master' into tl2-irrevocable 2016-09-15 10:30:50 -07:00
Howard Mao
49863944c4 merge ClientTileLinkEnqueuer and ClientUncachedTileLinkEnqueuer objects into TileLinkEnqueuer 2016-09-14 21:36:27 -07:00
Howard Mao
f363f5f709 wrap TestHarness latency pipe in module 2016-09-14 21:16:54 -07:00
Howard Mao
f5db83a72f NTiles should not be a Knob 2016-09-14 21:16:54 -07:00
Howard Mao
646527c88e use named constants to set AXI resp, cache, and prot fields 2016-09-14 21:16:54 -07:00
Howard Mao
f95b8c4ec2 move UnitTest back into rocketchip module 2016-09-14 20:51:56 -07:00
Henry Cook
cde104b3fa [junctions] Removes the obsoleted SMI. 
Closes #280.
 2016-09-14 20:06:22 -07:00
Henry Cook
ab3814dcee Merge branch 'master' into tl2-irrevocable 2016-09-14 19:00:17 -07:00
Yunsup Lee
e404bea2ee Merge branch 'master' into move-bootrom 2016-09-14 18:58:48 -07:00
Wesley W. Terpstra
1c7d7f9d32 tilelink2 RegisterRouterTest: stall on both edges 2016-09-14 18:22:12 -07:00
Yunsup Lee
97809b183f refactor unittest framework 
as a result, there's another SUITE that needs to run
 2016-09-14 18:10:21 -07:00
Henry Cook
d35060b881 [junctions] messed up the merge lulz 2016-09-14 17:55:16 -07:00
Henry Cook
1b53e477fa Merge branch 'master' of github.com:ucb-bar/rocket-chip into tl2-irrevocable 2016-09-14 17:50:17 -07:00
Henry Cook
e02d149cbe [tilelink2] Convert TileLink2 to use IrrevocableIO. Add checks to the Monitor to enforce Irrevocable semantics on TLEdges. Update the RegisterRouterTests to pass the new Monitor assertions. 2016-09-14 17:43:07 -07:00
Henry Cook
08c4c7b985 [junctions] make async crossings capable of providing IrrevocableIO 2016-09-14 17:38:54 -07:00
Megan Wachs
1308680f75 Add some async/clock utilities 2016-09-14 16:30:59 -07:00
Yunsup Lee
710f1ec020 Move BootROM from Coreplex to Periphery 2016-09-14 16:09:59 -07:00
Henry Cook
aa3fa90fe3 [tilelink2] Monitor: miscopied name in assert message 2016-09-14 14:56:50 -07:00
Henry Cook
d76e19a6ab [tilelink2] Monitor: simplify monitor interface. EdgeIn and EdgeOut are required to be the same, so why pass around both? 2016-09-14 14:23:23 -07:00
Andrew Waterman
565444c40e Make UnitTestCoreplex cope with an external MMIO network 2016-09-14 12:19:21 -07:00
Andrew Waterman
5828e6042e Work around https://github.com/ucb-bar/firrtl/issues/299 2016-09-14 11:47:10 -07:00
Andrew Waterman
c3ddff809b Move PRCI from Coreplex to always-on block, where it belongs 2016-09-14 11:01:05 -07:00
Andrew Waterman
5566bf1b13 Don't route PLIC interrupts through PRCI 
The PLIC is local to the Coreplex, and PRCI should not be.
 2016-09-14 11:01:05 -07:00
mwachs5
47acbf928b Give AsyncCrossing slave interfaces registers visibility into when they were written (#288) 2016-09-14 00:17:26 -07:00
Howard Mao
bdb7b1de36 move tilelink-agnostic counters from uncore to util package 2016-09-13 20:47:05 -07:00
Howard Mao
1882241493 move junctions utils into top-level utils package 2016-09-13 20:47:04 -07:00
Henry Cook
7dd4492abb First cut at refactoring unittests into a top-level utility. Individual tests co-located with their DUT. No functional changes. 2016-09-13 20:30:14 -07:00
Wesley W. Terpstra
d23ab7370d tilelink2: Unit Test for the RegisterCrossing 2016-09-13 18:33:56 -07:00
Wesley W. Terpstra
cc88bf1b08 junctions: give unit tests more time 2016-09-13 18:33:56 -07:00
Wesley W. Terpstra
acedd3688a tilelink2: unit test for the clock crossing 2016-09-13 18:33:56 -07:00
Wesley W. Terpstra
c8e6d47884 tilelink2: add a clock crossing adapter 2016-09-13 18:33:56 -07:00
Wesley W. Terpstra
44501cdbf8 crossings: change defaults to sync=3 for safer settling time 
Make the matching AsyncQueue depth=8 to support full throughput
 2016-09-13 18:33:56 -07:00
Wesley W. Terpstra
3348236320 junctions: remove obsolete Handshaker crossing 2016-09-13 18:33:56 -07:00
Wesley W. Terpstra
fe6a67dd0e tilelink2: add a RegisterCrossing primitive 2016-09-13 18:33:53 -07:00
Wesley W. Terpstra
d75f9d6a34 junctions: add an AsyncQueue 2016-09-13 17:38:18 -07:00
Wesley W. Terpstra
8142406d2e junctions: refactor the Crossing type 2016-09-13 15:51:18 -07:00
Wesley W. Terpstra
ecdfb528c5 crossing: refactor AsyncDecoupled to provide AsyncDecoupledCrossing with no clock domain 2016-09-13 15:51:18 -07:00
Wesley W. Terpstra
33a05786db tilelink2 RAMModel: fix put, get, putAck, getAck case (#282) 
This case should result in undefined data for the Get.
It was previously requiring the Get to return the new Put data,
which is only guaranteed by a FIFO device.
 2016-09-13 15:44:36 -07:00
Henry Cook
632b5896b9 Delete TestGraphs.scala 
Re-do later using Fuzzer
 2016-09-13 13:29:48 -07:00
Henry Cook
e318c29d48 [tilelink2] Fuzzer: Allow noise-making to be parameterized. Better comments. 2016-09-13 12:25:57 -07:00
Henry Cook
05100c12a7 Merge branch 'master' of github.com:ucb-bar/rocket-chip into monitor 2016-09-13 11:18:18 -07:00
Andrew Waterman
61cbe6164d Add option to execute JAL from decode stage 
This is particularly helpful for designs that don't have a BTB, but
it becomes the critical path for designs with RVC.  Caveat emptor.
 2016-09-13 02:32:00 -07:00
Wesley W. Terpstra
606f19a17f tilelink2: RegisterRouter Unit Test 2016-09-12 22:13:39 -07:00
Wesley W. Terpstra
7005422651 tilelink2 HintHandler: don't HintAck in the middle of a multibeat op 2016-09-12 19:06:35 -07:00
Wesley W. Terpstra
273d3a73f2 tilelink2: Unit Test passes! 2016-09-12 18:39:50 -07:00
Wesley W. Terpstra
9874bc553a tilelink2: Fragmenter supports Hints 2016-09-12 17:31:59 -07:00
Wesley W. Terpstra
42955a0490 tilelink2: HintHandler optimize to nothing if unneeded 2016-09-12 17:31:16 -07:00
Wesley W. Terpstra
94761f714d tilelink2 HintHandler: fill in correct sink in responses 2016-09-12 17:26:40 -07:00
Wesley W. Terpstra
ca5f98f138 tilelink2: Hints are not special 
Hints have a TransferSize limit just like all other message types.
 2016-09-12 17:15:28 -07:00
Henry Cook
ad8e563c89 [tilelink2] Fuzzer: Rewrite of fuzzer 
Multiple bug-fixes and actual source id generation.
 2016-09-12 17:00:58 -07:00
Henry Cook
0b0c891179 [tilelink2] Monitor: Allow zero-mask PutPartials 
this will require a larger address refactoring TBD
 2016-09-12 17:00:50 -07:00
Henry Cook
c57b52ec86 tilelink2 Fragmenter: bugfix using D.hasData 2016-09-12 16:58:21 -07:00
Henry Cook
82681179cb [tilelink2] Edges: add size to addr_lo. 
addr_lo cannot correctly be deciphered from the mask alone.
OxC still has addr_lo === 0 if size is >1.
 2016-09-12 16:58:09 -07:00
Andrew Waterman
88440ebf89 Use PseudoLRU in BTB when possible (for powers of two) 2016-09-12 16:52:03 -07:00
Andrew Waterman
266a2f24bd Disable Mul early out by default if XLen == 32 
With a default unroll of 8, it doesn't help performance, but costs area.
 2016-09-12 16:50:08 -07:00
Andrew Waterman
96185e4b16 tighten an assert condition 
dcache.s1_kill is a don't-care if dcache.req.valid wasn't previously high
 2016-09-12 16:49:46 -07:00
Andrew Waterman
beb141a20b Allow M, A, D, C extensions to be disabled in misa register 2016-09-12 16:49:46 -07:00
Howard Mao
f3cdeb08c6 pass nMemChannels to coreplex through CoreplexConfig 2016-09-12 12:40:10 -07:00
Howard Mao
9d9f90646d allow configuration of simulation memory latency 2016-09-12 12:33:50 -07:00
Henry Cook
a21b04a7c1 playground for making different DAGs to use as DUTs 2016-09-12 10:32:45 -07:00
Henry Cook
0671d5d637 Initial version of fuzzer and simple ram fuzz test 2016-09-12 10:32:45 -07:00
Wesley W. Terpstra
7760459b76 tilelink2 RegisterRouter: add RegField test patterns 2016-09-12 10:32:25 -07:00
Wesley W. Terpstra
85ae77c108 tilelink2 RAMModule: carefully stage the pipeline to make BRAMs possible 2016-09-12 10:32:25 -07:00
Wesley W. Terpstra
9560df537c tilelink2 RegisterRouter: allow sub-4k devices in order to make useful unit tests 2016-09-12 10:32:24 -07:00
Wesley W. Terpstra
26f9e2dfbd tilelink2 Parameters: fix width=1 address truncation bug 2016-09-12 10:32:24 -07:00
Wesley W. Terpstra
98a4facac7 tilelink2 RAMModel: clear Mems on power-up 2016-09-12 10:32:24 -07:00
Wesley W. Terpstra
17f7ab18de tilelink2 RAMModel: model the state a RAM would have for Put+Gets 2016-09-12 10:32:24 -07:00
Wesley W. Terpstra
488b93d146 tilelink2 Parameters: if you support PutPartial, you must support PutFull 2016-09-12 10:32:24 -07:00
Wesley W. Terpstra
d6261e8ce8 tilelink2 Edge: add a numBeats1 method for predecremented code 2016-09-12 10:32:24 -07:00
Wesley W. Terpstra
5604049927 tilelink2 Buffer: support an unlimited number of channels 2016-09-12 10:32:24 -07:00
Yunsup Lee
d985cdfc66 Merge branch 'master' into refactor-periphery 2016-09-10 23:42:13 -07:00
Yunsup Lee
fea31c7061 let GlobalAddrMap and ConfigString overridable 2016-09-10 23:39:44 -07:00
Yunsup Lee
bb3f514e8d now able to add periphery devices through traits 
Unfortunately, I had to touch a lot of code, which weren't quite possible to split up into multiple commits.
This commit gets rid of the "extra" infrastructure to add periphery devices into Top.
 2016-09-10 23:39:29 -07:00
Megan Wachs
77e4aa63f8 Get rid of the unecessary Parameters for Async Reset Reg 2016-09-09 16:24:35 -07:00
Andrew Waterman
b695ab5292 Merge branch 'master' into tweaks 2016-09-09 15:04:21 -07:00
Megan Wachs
5f5989848c Merge remote-tracking branch 'origin/master' into black_box_regs 2016-09-09 13:12:52 -07:00
Andrew Waterman
656aa78f7d Pipeline FMAs more deeply by default 
Rocket's QoR has improved enough that the FMAs are on the critical
path.  This change seems to keep the integer pipeline's logic
paths balanced with the FPU.
 2016-09-09 11:06:42 -07:00
Andrew Waterman
eaa4b04ee5 Check D$ store->load collisions more precisely 
Tolerate, for example, a half-word store and a half-word load to
different halves of the same word.
 2016-09-09 11:06:42 -07:00
Wesley W. Terpstra
c28ca37944 tilelink2: get rid of fragile implicit lazyModule pattern, and support := 
We can more reliably find the current LazyModule from the LazyModule.stack
 2016-09-08 23:06:59 -07:00
Wesley W. Terpstra
b587a409a3 tilelink2 Node: make it possible for {Identity,Output,Input}Node to pass a Vec 
In order to implement a pass-through RAM Monitor model, we will want to support
a variable number of inputs and outputs with BOTH different manager and client
parameters on each bundle.
 2016-09-08 21:34:20 -07:00
Wesley W. Terpstra
48ca478578 Merge branch 'master' into intbar 2016-09-08 21:09:59 -07:00
Wesley W. Terpstra
808a7f60f4 tilelink2 Legacy: it's only an error if it's valid (#264) 2016-09-08 21:09:40 -07:00
Megan Wachs
fda4c2bd76 Add a way to create Async Reset Registers and a way to easily access them with TL2 2016-09-08 20:02:07 -07:00
Megan Wachs
c1eb1f12a2 tilelink2: Rename GPIO to Example to avoid conflicts with real GPIO devices 2016-09-08 20:02:07 -07:00
Wesley W. Terpstra
cbf0670156 tilelink2 Legacy: it's only an error if it's valid 2016-09-08 19:32:00 -07:00
Wesley W. Terpstra
1b07d53f70 tilelink2 IntNodes: record interrupt ranges in parameters 2016-09-08 18:51:43 -07:00
Wesley W. Terpstra
66f58cf2d0 tilelink2 RegisterRouter: support new TL2 interrupts 2016-09-08 15:25:50 -07:00
Wesley W. Terpstra
23e896ed5d tilelink2 IntNodes: support interrupt graphs 2016-09-08 15:25:48 -07:00
Wesley W. Terpstra
d7df7d3109 tilelink2: connect Nodes to LazyModules for better error messages 2016-09-08 15:24:04 -07:00
Wesley W. Terpstra
53987cd9d4 tilelink2 Nodes: support non-Bundle data for io type 2016-09-08 15:19:12 -07:00
Wesley W. Terpstra
60a503dc2f tilelink2 RegField: add a w1ToClear RegField 2016-09-08 14:02:49 -07:00
Wesley W. Terpstra
99b7e734cd tilelink2 Bundles: fix wrong sink width! 2016-09-08 13:47:40 -07:00
Wesley W. Terpstra
9bfd8c1cf5 TL2 WidthWidget (#258) 
* tilelink2 Narrower: support widenening and narrowing on all channels

Be extra careful with the mask transformations

We need to make sure that narrowing or widening do not cause a loss
of information about the operation. The addr_hi+(mask|addr_lo) conversions
are now 1-1, except on D, which should not matter.

* tilelink2 SRAM: work around firrtl SeqMem bug

* tilelink2 WidthWidget: renamed from Narrower (it now converts both ways)

* tilelink2 mask: fix an issue with width=1 data buses
 2016-09-08 10:38:38 -07:00
Yunsup Lee
2c000a99da compartmentalize Top into periphery traits 2016-09-08 02:08:57 -07:00
Yunsup Lee
e35e7b2ee3 Fix routing in non-contiguous MMIO regions 
This is a temporary fix, which can generate more hardware than necessary, but this is OK for now, since this code will soon be replaced with tilelink2 code.
 2016-09-07 19:28:12 -07:00
Andrew Waterman
7603b86239 Merge branch 'master' into use-companion 2016-09-07 12:56:55 -07:00
Colin Schmidt
254f49093c only use companion objects for types 2016-09-07 12:32:34 -07:00
Andrew Waterman
23d0b31615 Merge branch 'master' into tilelink2.2 2016-09-07 11:47:50 -07:00
Andrew Waterman
02a2439222 Support a degenerate PLIC with no interrupts 
Resolves #249
 2016-09-07 11:21:13 -07:00
Andrew Waterman
70cfd7ce13 Make DefaultRV32Config be RV32IMAFCS, not RV32IMC 
The latter is more the domain of TinyConfig.
 2016-09-07 01:58:25 -07:00
Andrew Waterman
a7f47f3c23 Reduce default BTB size 
The old value 62 seems to have been a typo introduced over 2 years ago
in commit 63bd0b9d2a.  The intent was to
fit the dhrystone working set (rofl) which the new value of 40 does.
 2016-09-07 01:51:27 -07:00
Andrew Waterman
9fea4c83da Add RV32F support 2016-09-07 00:05:39 -07:00
Andrew Waterman
66e9f027e0 Add MuxT to mux on Tuple2 and Tuple3 2016-09-07 00:05:38 -07:00
Andrew Waterman
511cc6c5c5 Evaluate arg to Boolean.option lazily 2016-09-07 00:05:38 -07:00
Andrew Waterman
a0dcd42e80 avoid erroneously setting tags valid during flush 2016-09-07 00:05:38 -07:00
Yunsup Lee
fb05f5a07f remove parameter ExtIOAddrMapEntries (#250) 
with the AddrMap ordering constraint relaxed, this parameter is no longer needed.
 2016-09-07 00:05:00 -07:00
Wesley W. Terpstra
d2421654c4 tilelink2: refactor address into addr_hi on ABC and addr_lo on CD 
We need addr_lo in order to properly convert widths.
As part of the refactoring, move all methods out of the Bundles
 2016-09-06 23:46:44 -07:00
Yunsup Lee
b76612f357 relax contraint on adding AddrMapEntry to AddrMap (#248) 
now you can add them in any order.  there's an explicit check at the end to figure out whether there are overlapping regions.
 2016-09-06 21:53:55 -07:00
Wesley W. Terpstra
aae4230627 tilelink2: fix bugs found by Megan in Legacy converter 2016-09-06 13:12:33 -07:00
Yunsup Lee
56d81b0034 fix configstring printout with no memory 2016-09-06 10:40:11 -07:00
Wesley W. Terpstra
54ab14cd9d tilelink2: statically optimize numBeats for simple managers 2016-09-05 22:11:03 -07:00
Wesley W. Terpstra
314d6ebd6f tilelink2: stricter TransferSizes requirements 2016-09-05 22:10:28 -07:00
Wesley W. Terpstra
56170c605c tilelink2: be more forgiving in what Legacy TL requires 2016-09-05 21:12:51 -07:00
Wesley W. Terpstra
3167539331 tilelink2: Narrower must be little-endian 2016-09-05 20:58:41 -07:00
Wesley W. Terpstra
ded246fb95 tilelink2: relax max transfer size; the real requirement is not exceeding alignment 2016-09-05 20:58:41 -07:00
Wesley W. Terpstra
cf0291061d tilelink2: fix a bug in UIntToOH1 triggered if the size was too big 2016-09-05 20:58:41 -07:00
Wesley W. Terpstra
9f45212c95 tilelink2: Fragmenter needs to update subaddress 2016-09-05 20:58:41 -07:00
Wesley W. Terpstra
757d46279e tilelink2: expand data correctly in D channel narrower 2016-09-05 20:58:41 -07:00
Wesley W. Terpstra
0faa8c4051 tilelink2: fix Xbar bug where Mux1H broke FSM if only one manager 2016-09-05 20:58:41 -07:00
Wesley W. Terpstra
a0c25880c7 tilelink2: Monitor should check mask of reconstructed request 2016-09-05 20:58:41 -07:00
Wesley W. Terpstra
df32cc3887 tilelink2: be careful; apply Andrew's masking trick everywhere 2016-09-05 20:58:41 -07:00
Wesley W. Terpstra
fb262558ee tilelink2: helper objects should pass source line from where they were invoked 2016-09-05 20:58:41 -07:00
Wesley W. Terpstra
1a081b4dd5 tilelink2: Monitor should report which TL connection was the problem 2016-09-05 20:58:41 -07:00
Wesley W. Terpstra
cb54df0a8a tilelink2: tie off unused channels 2016-09-05 20:58:41 -07:00
Wesley W. Terpstra
68e64a9859 tilelink2: clarify ready-valid use of RegisterRouter 2016-09-05 20:58:40 -07:00
Wesley W. Terpstra
e3b3543841 tilelink2: ensure RegFields don't exceed their bounds 2016-09-05 20:58:40 -07:00
Wesley W. Terpstra
8343070639 tilelink2: detect 1-bit overflow in register definitions 2016-09-05 20:58:40 -07:00
Wesley W. Terpstra
a1fc01fd6d tilelink2: prevent mapping the same register twice 2016-09-05 20:58:40 -07:00
Wesley W. Terpstra
81162a2dc9 tilelink2: support attaching a DecoupledIO directly to a register 2016-09-05 20:58:40 -07:00
Wesley W. Terpstra
6a378e79e3 tilelink2: allow 0-stage backpressure in combinational regmap 2016-09-05 20:58:40 -07:00
Wesley W. Terpstra
4746cf00ce tilelink2: move files to new uncore directory 2016-09-05 20:58:40 -07:00
Howard Mao
a7f79aa409 get rid of TileLinkMemorySelector 2016-09-04 10:55:19 -07:00
Howard Mao
f0ab6d0214 tie off finish signals in tilelink wrapper and unwrapper 2016-09-04 10:55:19 -07:00
Howard Mao
66de89c4db allow fixed priority routing in Junctions arbiters 2016-09-04 10:55:19 -07:00
Howard Mao
efe8670283 allow Serializer/Deserializer to work with arbitrary Chisel data types 2016-09-04 10:55:19 -07:00
Howard Mao
b9b79e4fb6 get rid of AtoS RTL 2016-09-04 10:55:19 -07:00
Howard Mao
f34843f1b9 fix assignment of incoherent vector 2016-09-04 10:12:16 -07:00
Yunsup Lee
a4c1942958 flatten Coreplex module hierarchy 2016-09-02 17:45:08 -07:00
Andrew Waterman
63679bb019 Add support for L1 data scratchpads instead of caches 
They fit in the same part of the address space as DRAM would be, and
are coherent (because they are not cacheable).

They are currently limited to single cores without DRAM.  We intend
to lift both restrictions, probably when we add support for
heterogeneous tiles.
 2016-09-02 16:22:07 -07:00
Jim Lawson
dc9ae19936 Work-around for current Scala compiler "structural type loses implicits". 
Running rocket-chip through the chisel3 gsdt branch which supports stricter connection checks and uses implicit definitions to deal with "old" direction overrides, exposed a possible bug in the Scala compiler.

    [error] .../src/main/scala/uncore/devices/Prci.scala:27: value asOutput is not a member of uncore.devices.PRCIInterrupts{val mtip: chisel3.core.Bool; val msip: chisel3.core.Bool}
    [error] possible cause: maybe a semicolon is missing before `value asOutput'?
    [error]   }.asOutput
    [error]     ^
    [error] one error found
    [error] (uncore/compile:compileIncremental) Compilation failed

This change isn't strictly required for current chisel3 code, but is being submitted in anticipation of an eventual merge of the gsdt branch prior to a compiler fix.
 2016-09-02 15:38:18 -07:00
Andrew Waterman
fb50f7c9dd Set default TileLink width to XLen 2016-09-02 15:27:54 -07:00
Andrew Waterman
e23e4d6de5 Add ClientUncachedTileLinkEnqueuer utility 2016-09-02 15:27:54 -07:00
Andrew Waterman
7aeb42fa55 Allow narrow TL interface on PRCI; make mtime writable 2016-09-02 15:27:54 -07:00
Andrew Waterman
6872000f5e Merge pull request #239 from ucb-bar/move_rtc 
Move RTC
 2016-09-02 15:17:49 -07:00
Megan Wachs
af364bc7bc Rename RTC to RTCTick to clarify that it needs to be a Boolean signal, not a Clock type signal 2016-09-02 15:14:39 -07:00
Megan Wachs
8163a6b597 Make it easier to override the 'placeholder' Real-Time-Clock, to allow more real-world applications 2016-09-02 11:11:40 -07:00
Andrew Waterman
c05ba1e864 Add TileId parameter, generalizing GroundTestId 
This usually shouldn't be used in Tiles that are meant to be P&R'd once
and multiply instantiated, as their RTL would no longer be homogeneous.
However, it is useful for conditionalizing RTL generation for
heterogeneous tiles.
 2016-09-02 00:10:50 -07:00
Yunsup Lee
4a7972be31 connect testharness components via member functions (#236) 
to prevent code duplication for new testbenches
 2016-09-01 18:38:39 -07:00
Howard Mao
c66318307c no longer need to set invalidate_lr in RoCC examples 2016-08-31 22:05:35 -07:00
Howard Mao
27c674972c tie off invalidate_lr in RoCC 2016-08-31 22:00:27 -07:00
Howard Mao
bb578494d8 don't override req.bits.phys in SimpleHellaCacheIF 2016-08-31 22:00:27 -07:00
Howard Mao
50d6738caf make sure DummyPTW sets all the necessary status and ptbr signals 2016-08-31 22:00:27 -07:00
Howard Mao
403cc1c5c4 fix DecoupledTLB to handle misses appropriately 2016-08-31 22:00:27 -07:00
Andrew Waterman
f4524e4c91 Add PML for Boolean.option; use it 2016-08-31 13:43:04 -07:00
SeungRyeol Lee
b1ce3b8c98 Add address map entries for exported mmio port. 2016-08-31 06:58:38 +09:00
Andrew Waterman
8dbee2b133 Don't conditionalize running bmarks on UseVM 2016-08-29 13:43:29 -07:00
Andrew Waterman
07d48df88a Get rid of FPU RoCC port logic when RoCC not present 
The previous approach used ex_reg_valid to determine whether to
source data from the FPU or RoCC.  Thus, when the RoCC was not
present, it was still creating muxes.  Using ex_cp_valid instead
gets rid of them.
 2016-08-29 12:59:17 -07:00
Andrew Waterman
f91552a650 Add performance counter support 2016-08-29 12:31:52 -07:00
Andrew Waterman
1e3339e97c Update breakpoints to match @timsifive's debug spec 2016-08-29 12:31:52 -07:00
Andrew Waterman
9ca82dd397 reset default MulDiv config to moderately fast default 
Closes #228.

In commit 3f8c60bbd6 I inadvertently
changed the configuration while refactoring it.
 2016-08-29 12:31:52 -07:00
Andrew Waterman
33eaf08b60 set missing port direction 
Ideally, chisel should flag this as an error.
 2016-08-29 12:31:52 -07:00
Megan Wachs
53ee54dbd1 Incorporate feedback to make the NExtPerhipheryInterrupts come from DeviceBlock itself 2016-08-26 10:40:39 -07:00
Megan Wachs
41aa80c5d7 Merge remote-tracking branch 'origin/master' into coreplex_peripheral_interrupts 2016-08-26 09:32:36 -07:00
Ben Keller
79293f4fa2 Use a better iterator inside the DCache 2016-08-25 20:41:39 -07:00
Henry Cook
115e8edd83 Merge branch 'master' into coreplex_peripheral_interrupts 2016-08-25 17:26:56 -07:00
Henry Cook
93c801f598 Streamline the Generator App and associated utilities. Remove deprecated call to chiselMain and useless Chisel2 args. Update arguments to sbt run. (#227) 2016-08-25 17:26:28 -07:00
Megan Wachs
428eed79a1 Allow some External Interrupts to come from Periphery 2016-08-25 14:16:33 -07:00
Megan Wachs
32118269c1 Remove } introduced in merge 2016-08-23 08:20:52 -07:00
Megan Wachs
9974626d6a Merge remote-tracking branch 'origin/master' into HEAD 
Conflicts:
	src/main/scala/rocketchip/TestHarness.scala
 2016-08-23 07:34:01 -07:00
Howard Mao
61aa716f44 fix bus axi connections in periphery 2016-08-22 11:57:15 -07:00
Howard Mao
f9ea14b4c2 extra devices should get elaborated in a single build function 2016-08-22 11:57:15 -07:00
Scott Johnson
96e2cefb34 Merge branch 'master' into HEAD 2016-08-22 11:37:30 -07:00
mwachs5
22ffe36258 Add a queue for timing QoR between L2->MMIO network (#217) 2016-08-19 22:51:49 -07:00
Megan Wachs
75efc7dee7 JtagIO's DRV_TDO should be an INPUT 2016-08-19 16:38:03 -07:00
Megan Wachs
723cc063cb Move files after the file reorganization 2016-08-19 16:11:41 -07:00
Megan Wachs
3dd51ff734 This commit adds Logic & test support for JTAG implementation of Debug Transport Module. 
- The DebugTransportModuleJtag is written in Verilog. It probably could be written in
  Chisel except for some negative edge clocking requirement.
- For real implementations, the AsyncDebugBusTo/From is insufficient. This commit
  includes cases where they are used, but because they are not reset asynchronously,
  a Verilog 'AsyncMailbox' is used when p(AsyncDebug) is false.
- This commit differs significantly from the earlier attempt. Now, the
  DTM and synchronizer is instantiated within Top, as it is a real piece of
  hardware (vs. test infrastructure).
-TestHarness takes a parameter vs. creating an entirely new TestHarness class.
It does not make sense to instantiate TestHarness when p(IncludeJtagDTM) is false,
and it would not make sense to insantiate some other TestHarness if p(IncludeJtagDTM)
is true.

To build Verilog which includes the JtagDTM within Top:

make CONFIG=WithJtagDTM_...

To test using gdb->OpenOCD->jtag_vpi->Verilog:

First, install openocd (included in this commit)

./bootstrap
./configure --prefix=$OPENOCD --enable-jtag-vpi
make
make install

Then to run a simulation:

On a 32-bit core:

$(ROCKETCHIP)/riscv-tools/riscv-tests/debug/gdbserver.py \
  --run ./simv-TestHarness-WithJtagDTM_... \
  --cmd="$OPENOCD/bin/openocd --s $OPENOCD/share/openocd/scripts/" \
  --freedom-e300-sim \
  SimpleRegisterTest.test_s0

On a 64-bit core:

$(ROCKETCHIP)/riscv-tools/riscv-tests/debug/gdbserver.py \
  --run ./simv-TestHarness-WithJtagDTM_... \
  --cmd="$OPENOCD/bin/openocd --s $OPENOCD/share/openocd/scripts/" \
  --freedom-u500-sim \
  SimpleRegisterTest.test_s0
 2016-08-19 16:08:31 -07:00
Megan Wachs
dd4a50c452 Add JTAG DTM and test support in simulation 
Initial cut

checkpoint which compiles and runs but there is some off-by-1 in the protocol

Debugging the clock crossing logic

checkpoint which works

Clean up the AsyncMailbox black box
 2016-08-19 16:08:17 -07:00
Howard Mao
f4e0e0966c move rocketchip package sources into its own subdirectory 2016-08-19 13:45:23 -07:00
Howard Mao
7b20609d4d reorganize moving non-submodule packages into src/main/scala 2016-08-19 13:45:23 -07:00
Andrew Waterman
114226252b Hierarchicalize D$ config 2016-08-19 12:12:34 -07:00
Andrew Waterman
3f8c60bbd6 Hierarchicalize FPU and MulDiv parameters 
This gets some leaf-level parameters out of the global parameterization,
better separating concerns.  This commit also allows disabling the
M extension.
 2016-08-19 12:06:17 -07:00
Colin Schmidt
0a6c05a5d8 connect top level interrupts to coreplex 2016-08-18 15:52:44 -07:00
Howard Mao
91a97d6773 add some more comments to describe the new device system 2016-08-18 15:06:55 -07:00
Howard Mao
1b6fa70b5c Add test for external TL clients (bus mastering) 2016-08-18 14:26:03 -07:00
Howard Mao
18982d7351 add default addrMapEntry definition which throws exception 2016-08-18 12:29:41 -07:00
Howard Mao
f7c42499bb allow ExtraDevices to have client ports as well as MMIO ports 2016-08-18 12:18:14 -07:00
Howard Mao
d771f37e7e rename BusPorts to ExternalClients 2016-08-18 10:54:24 -07:00
Howard Mao
10190197c3 allow coreplex to take in more than 1 bus port 2016-08-18 10:35:25 -07:00
David Biancolin
29600f64ec make memsize configurable 2016-08-17 16:31:34 -07:00
Andrew Waterman
ed827678ac Write test harness in Chisel 
This is an unavoidably invasive commit, because it affects the unit tests
(which formerly exited using stop()), the test harness Verilog generator
(since it is no longer necessary), and the DRAM model (since it is no
longer connected).  However, this should substantially reduce the effort
of building test harnesses in the future, since manual or semi-automatic
Verilog writing should no longer be necessary.  Furthermore, there is now
very little duplication of effort between the Verilator and VCS test
harnesses.

This commit removes support for DRAMsim, which is a bit of an unfortunate
consequence.  The main blocker is the lack of Verilog parameterization for
BlackBox.  It would be straightforward to revive DRAMsim once support for
that feature is added to Chisel and FIRRTL.  But that might not even be
necessary, as we move towards synthesizable DRAM models and FAME-1
transformations.
 2016-08-15 23:27:27 -07:00
Howard Mao
47a0c880a4 make sure TLId set in Periphery 2016-08-15 13:58:23 -07:00
Howard Mao
e939af88aa explicitly set TLId for bus TL ports 2016-08-15 12:46:29 -07:00
Howard Mao
2c39f039b5 make external address map order overrideable 2016-08-15 11:40:28 -07:00
Howard Mao
fb476d193c refactor main App for better code re-use 2016-08-11 16:15:23 -07:00
Howard Mao
e0ae039235 fix config string generation for extra devices 2016-08-11 10:44:32 -07:00
Howard Mao
647dbefd9b split coreplex off into separate package 2016-08-10 18:04:22 -07:00
Howard Mao
4bfa7ceb6a unit tests in Coreplex instead of Tile 2016-08-10 11:26:14 -07:00
Howard Mao
0ee1ce4366 separate Coreplex and TopLevel parameter traits 2016-08-10 09:49:56 -07:00
Howard Mao
f95d319162 don't use secondary external address map; collapse submap instead 2016-08-09 22:29:38 -07:00
Howard Mao
2645f74af2 clean up addrmap flatten function 2016-08-09 22:14:32 -07:00
Howard Mao
33f13d5c49 don't repeat external addr map base 2016-08-09 21:20:54 -07:00
Howard Mao
3ea2f4a6c4 refactor top-level into coreplex and platform 2016-08-09 18:26:52 -07:00
Howard Mao
dd1fed41b6 generate BootROM contents from assembly code 2016-08-05 16:39:21 -07:00
Howard Mao
9fa5b228b2 allow extra devices and top-level ports to be added without changing RocketChip.scala 2016-08-04 14:06:14 -07:00
Howard Mao
410e3e5366 make sure TraceGen gets correct addresses 2016-08-04 11:08:25 -07:00
Howard Mao
0a85e92652 Allow additional internal MMIO devices to be created without changing BaseConfig 2016-08-04 11:04:52 -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