riscv/rocket-chip
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2160 Commits

Author SHA1 Message Date
Megan Wachs
9efe1c448e Merge remote-tracking branch 'origin/master' into HEAD 2017-10-09 09:48:38 -07:00
Andrew Waterman
986cbfb6b1 For Rockets without VM, widen vaddrBits to paddrBits 
This supports addressing a >39-bit physical address space.
 2017-10-08 01:21:47 -07:00
Andrew Waterman
a0e5a20b60 Don't route branch comparison result through ALU output mux 
This potentially mitigates a critical path, and makes the ALU usable
in processors that have dedicated branch comparators.
 2017-10-07 17:36:24 -07:00
Andrew Waterman
36c39d01e4 Factor out most of HasRocketTiles into HasTiles 2017-10-07 17:36:24 -07:00
Andrew Waterman
70a4127cb8 Factor out some of HaveRocketTiles into HaveTiles 2017-10-07 17:36:24 -07:00
Andrew Waterman
34e96c03b1 Move HCF to BaseTile 2017-10-07 17:36:24 -07:00
Andrew Waterman
71205b70cc Make RocketTileWrapper a BaseTile 2017-10-07 17:36:24 -07:00
Andrew Waterman
4645b61fd3 Decouple BaseTile from HasTileLinkMasterPort 2017-10-07 17:36:24 -07:00
Henry Styles
5498468743 FPU : simplify pipeline register generation in FMA 2017-10-05 15:18:19 -07:00
Henry Styles
7a46715cbc FPU : to assist retiming move upto first 2 register stages of into FMA 2017-10-05 15:18:04 -07:00
Wesley W. Terpstra
bd045a3b95 tilelink: split Acquire into Acquire{Block,Perm} (#1030) 
We had planned for a while to add an 'Overwrite' message which obtains
permissions without requiring retrieval of data. This is useful whenever
a master knows it will completely replace the contents of a cache block.

Instead of calling it Overwrite, we decided to split the Acquire type.

If you AcquirePerm, you MUST Release and ProbeAck with Data.
 2017-10-05 12:49:49 -07:00
Wei Song (宋威)
81b9ac42a3 add comments to diplomacy resource. (#913) 2017-10-05 12:45:56 -07:00
Henry Cook
8da7aabd51 tile: supply hartid from RocketTileParams 
make WithNCores partial configs override rather than append more tiles
 2017-10-05 00:31:53 -07:00
Henry Cook
45581e60f0 Revert "Merge pull request #1027 from freechipsproject/dont-touch-hartid" 
This reverts commit 5232a29d7d, reversing
changes made to a2dc13669a.
 2017-10-05 00:26:44 -07:00
Andrew Waterman
5a84564203 Merge pull request #1023 from freechipsproject/csr-cleanup 
Generalize CSR file to support simpler cores
 2017-10-04 14:04:59 -07:00
Andrew Waterman
32fda51a2c Get rid of paddrBits from SystemBus (#1029) 2017-10-04 12:11:37 -07:00
Andrew Waterman
7bcf28c585 Define fetchBytes in HasCoreParams, not Frontend 
It is more generally useful.
 2017-10-03 17:34:18 -07:00
Andrew Waterman
2786e42d99 Don't register interrupts in CSRFile 
They are usually registered outside the tile in a CDC.
 2017-10-03 17:34:18 -07:00
Andrew Waterman
5cfe070932 Add option to make misa read-only 2017-10-03 17:34:18 -07:00
Andrew Waterman
09468a272b Add option to remove basic counters (mcycle/minstret) 2017-10-03 17:34:18 -07:00
Andrew Waterman
ab0821f25b Move microarchitecture-neutral params from Rocket to Core 
This makes some of the units more reusable.
 2017-10-03 17:34:18 -07:00
Andrew Waterman
190d5c50d9 Remove deprecated custom-CSR support 2017-10-03 17:34:18 -07:00
Henry Cook
5232a29d7d Merge pull request #1027 from freechipsproject/dont-touch-hartid 
Make use of the new DontTouch annotation
 2017-10-03 12:55:34 -07:00
Henry Cook
d33737802a util: add DontTouch trait with dontTouchPorts method 2017-10-02 19:36:34 -07:00
Henry Cook
aa3a18222c HellaCache: users like to peep resp.data and resp.addr 2017-10-02 19:36:30 -07:00
Henry Cook
cedfb0e784 coreplex: dontTouch the rocket_tile_inputs wire 
which contains hartid.
 2017-10-02 19:36:10 -07:00
Wesley W. Terpstra
a2dc13669a Error grants (#1025) 
* CacheCork: an error Grant still says 'toT' even though it is transient

Grants with errors must be handled by a client as though no actual
permissions were obtained, so that two clients do not both end up believing
that they own a block which is only temporarily offline. However, the
Grant MESSAGE should still match the request; ie. if you did Acquire.NtoT,
the response must be Grant.toT, even though the 'error' bit signals that
the Grant actually grants no permissions.

This keeps the implementation of request-response tracking in interstitial
adapters and FSMs simple, consistent with the way multibeat errors must
include all their beats.

* Error: handle permissions properly
 2017-10-02 14:49:25 -07:00
Megan Wachs
9c9cb68462 JTAG Coverage: Add reset coverage points 2017-10-02 11:08:13 -07:00
Megan Wachs
a8ab06d572 JTAG: Add coverage points to the JTAG Tap 2017-10-02 11:08:13 -07:00
Jack Koenig
8891bf1b64 Bump chisel3 and firrtl, update plugin versions 
And update chisel3 code
 2017-09-29 15:44:27 -07:00
Henry Cook
547bdc2b5b diplomacy: standardize sram device resource naming (#1022) 2017-09-29 14:52:26 -07:00
Andrew Waterman
9137f54f59 Merge pull request #1020 from freechipsproject/fix-trace-insn 
Provide correct trace insn on interrupts when possible
 2017-09-27 18:47:24 -07:00
Andrew Waterman
9eaf50762e Don't report exceptions as valid instructions in the printed log 2017-09-27 16:29:42 -07:00
Wesley W. Terpstra
0a287df0f7 Merge remote-tracking branch 'origin/master' into auto-diplomacy-bundles 2017-09-27 16:28:10 -07:00
Andrew Waterman
31c5246446 Provide correct trace insn on interrupts when possible 2017-09-27 16:27:53 -07:00
Wesley W. Terpstra
feae216f05 clint: output interrupts in the correct direction 2017-09-27 15:18:42 -07:00
Henry Cook
05112b49a3 Merge branch 'master' into tl-error 2017-09-27 14:50:17 -07:00
Henry Cook
652d57291c Merge pull request #1018 from freechipsproject/refine-trace-port 
Separate interrupt bit from cause field in trace bundle
 2017-09-27 14:46:27 -07:00
Wesley W. Terpstra
9307092d14 coreplex: draw the FrontBus at the bottom and SystemBus at the top 2017-09-27 14:20:39 -07:00
Henry Cook
f48bf2ac2f rocket: connect uncrossed output interrupts 2017-09-27 12:53:19 -07:00
Andrew Waterman
78f3877e02 Trace tval field should be zero when not taking exceptions 2017-09-27 12:51:10 -07:00
Wesley W. Terpstra
e07d86aecd rocket: flip interrupt rendering so cores are on top 2017-09-27 12:46:29 -07:00
Andrew Waterman
583adeee88 Separate interrupt bit from cause field in trace bundle 2017-09-27 12:41:30 -07:00
Wesley W. Terpstra
1fda05970a rocket: move interrupt synchronizers to correct side of crossing 2017-09-27 12:33:08 -07:00
Wesley W. Terpstra
ce01ab2700 RegisterRouter: correctly create interrupts vector 2017-09-27 12:27:16 -07:00
Wesley W. Terpstra
0268959c24 rocket: move interrupt synchronizers to correct side of crossing 2017-09-27 12:02:04 -07:00
Wesley W. Terpstra
e35d3df6ea diplomacy: detect and report cycles in the diplomatic graph 2017-09-27 11:46:06 -07:00
Wesley W. Terpstra
5af08966d8 coreplex: fix WithoutTLMonitors 
closes #1017
 2017-09-27 00:57:18 -07:00
Wesley W. Terpstra
d87536ff8b diplomacy: make NodeHandle recursively composable 2017-09-26 18:47:16 -07:00
Wesley W. Terpstra
31a934bec0 coreplex: buses are now LazyModules with LazyScope 2017-09-26 14:58:56 -07:00
Wesley W. Terpstra
da40573a64 diplomacy: replace LazyModule.stack with an optional scope 2017-09-26 14:56:50 -07:00
Wesley W. Terpstra
a2b423d647 diplomacy: add LazyScope to post-hoc add children to a LazyModule 2017-09-26 14:40:45 -07:00
Wesley W. Terpstra
a27e853101 diplomacy: move rendering properties to edges 
FlipRendering { implicit p => ... } now changes the render direction of edges.
diplomatic NodeImps can specify a default render flip using the new 'render' method.
 2017-09-26 13:24:36 -07:00
Wesley W. Terpstra
76c2aa1661 diplomacy: introduce the typing-saving SimpleNodeImp 2017-09-26 12:28:59 -07:00
Wesley W. Terpstra
870ed3d219 diplomacy: fix the order of auto signals 2017-09-26 11:56:55 -07:00
Wesley W. Terpstra
d22ec1eddf diplomacy: beautify node signal prefixes 2017-09-26 11:56:53 -07:00
Henry Cook
9d5e96672e coreplex: clean up coherence manager attachment point 2017-09-25 18:07:51 -07:00
Wesley W. Terpstra
fef5054cec diplomacy: disambiguate names only when necessary 
If two (or more) 'auto_' things have the same name, append _0 and _1 to them.

The order of definitions is unaffected; ie:
  a => a_0
  b => b_0
  b => b_1
  c => c
  a => a_1
 2017-09-25 16:12:34 -07:00
Wesley W. Terpstra
5323cf88dd util: add Option.unzip 2017-09-25 12:06:31 -07:00
Wesley W. Terpstra
60614055e3 diplomacy: eliminate some wasted IdentityNodes using cross-module refs 2017-09-25 12:06:27 -07:00
Wesley W. Terpstra
bc225a4e82 diplomacy: place Monitors inside LazyModules sinks 
We used to place Monitors at the point of the ':='.
This was problematic because the clock domain might be wrong.
Thus, we needed to shove Monitors a lot.

Furthermore, now that we have cross-module ':=', you might not even
have access to the wires at the point where ':=' is invoked.
 2017-09-22 23:36:17 -07:00
Wesley W. Terpstra
cfb7f13408 diplomacy: capture SourceInfo at point of := in Edge parameters 2017-09-22 22:25:56 -07:00
Wesley W. Terpstra
16969eb1f6 diplomacy: spelling fix 2017-09-22 15:01:42 -07:00
Wesley W. Terpstra
b9a2e4c243 diplomacy: API beautification 2017-09-22 15:01:42 -07:00
Wesley W. Terpstra
9217baf9d4 diplomacy: change API to auto-create node bundles => cross-module refs 2017-09-22 15:01:39 -07:00
Wesley W. Terpstra
53f6999ea8 Splitter: reuse TLCustom node instead of special diplomacy case 2017-09-22 14:58:39 -07:00
Wesley W. Terpstra
6fa5250e1f config: fix warning 2017-09-22 14:58:36 -07:00
Wesley W. Terpstra
17ba209ed0 coreplex: name LazyModules 2017-09-22 14:38:47 -07:00
Wesley W. Terpstra
1fedabcb55 tilelink: invoke LazyModule() at point of monitor binding 2017-09-22 14:38:47 -07:00
Wesley W. Terpstra
dfc815f4d3 rocket: invoke LazyModule at point of use/binding 2017-09-22 14:38:47 -07:00
Wesley W. Terpstra
87d597c70d ahb apb: remove unintentional var 2017-09-22 14:38:47 -07:00
Wesley W. Terpstra
d89ee9d9d4 nodes: grab a name on construction 2017-09-22 14:38:47 -07:00
Wesley W. Terpstra
3656e975a1 diplomacy: ValName captures val bindings for Nodes 2017-09-22 14:38:47 -07:00
Henry Cook
81e136aa37 rocket: give l2 tlb a nice name 2017-09-21 18:13:39 -07:00
Henry Cook
30c8c8c517 Revert "try to give seqmems clearer names" 
This reverts commit 8db5bbbae0.

This attempt at clarification instead results in confusing generated verilog like:
`dcache_data_arrays_0 icache_data_arrays_0 (...);`
because of deduplication of identically dimensioned SRAMs...
 2017-09-21 18:02:32 -07:00
Henry Cook
e0b9f9213a make halt_and_catch_fire Optional 2017-09-21 14:58:47 -07:00
Henry Cook
28b635e721 tile: add halt_and_catch_fire signal 
for unrecoverable / fatal errors
 2017-09-21 14:58:47 -07:00
Henry Cook
a887baa615 rocket: base trait for reporting ecc errors 2017-09-21 14:58:47 -07:00
Andrew Waterman
88c782cc70 Report D$ uncorrectable errors on C channel 2017-09-20 17:15:11 -07:00
Andrew Waterman
6bc20942b5 Don't cache TL error responses; report access exceptions 2017-09-20 17:01:08 -07:00
Andrew Waterman
9b828a2640 Only look at error signal on last beat 2017-09-20 15:15:21 -07:00
Andrew Waterman
026fa14bf8 Rename trace.addr -> iaddr 2017-09-20 14:32:41 -07:00
Andrew Waterman
5b2f458214 Merge branch 'master' into ma-fetch 2017-09-20 12:18:03 -07:00
Andrew Waterman
f1a506476b Merge pull request #994 from freechipsproject/beu 
Add L1 bus-error unit
 2017-09-20 12:17:08 -07:00
Andrew Waterman
f5bd639863 Don't write badaddr on misaligned fetch exceptions 
It's optional, and we were doing it wrong before, so just don't do it.
 2017-09-20 10:52:41 -07:00
Andrew Waterman
db57e943f3 Report TL errors into D$ 2017-09-20 00:05:07 -07:00
Andrew Waterman
aaad73f019 Add an intra-tile xbar 2017-09-20 00:05:07 -07:00
Andrew Waterman
afad25fceb Integrate L1 BusErrorUnit 2017-09-20 00:05:07 -07:00
Andrew Waterman
dbf599f6a1 Support SynchronizerShiftReg(sync = 0) 
This makes it easier to parameterize code where the synchronizer
might not always be needed.
 2017-09-20 00:05:07 -07:00
Andrew Waterman
79dab487fc Implement bus error unit 2017-09-20 00:05:07 -07:00
Andrew Waterman
ed18acaae0 Report D$ errors 2017-09-20 00:05:07 -07:00
Andrew Waterman
034ea722f4 Report I$ errors 2017-09-20 00:05:07 -07:00
Andrew Waterman
9a175b0fb1 Statically report error correction/detection capability from ECC codes 2017-09-20 00:05:07 -07:00
Andrew Waterman
4d6d6ff641 Add instruction-trace port 2017-09-19 22:59:57 -07:00
Andrew Waterman
acea94bcef Merge pull request #1001 from freechipsproject/address-decoder 
Address decoder "improvements"
 2017-09-19 22:38:53 -07:00
Jacob Chang
b4fc5104d4 Add cover property API that can be refined through Config PropertyLibrary (#998) 2017-09-19 19:26:54 -07:00
Henry Cook
57e8fe0a6b Merge pull request #1000 from freechipsproject/name-seqmems 
try to give seqmems clearer names for use with external tools
 2017-09-19 17:59:00 -07:00
Andrew Waterman
87b92cb206 Scan AddressDecoder bits left to right 
This heuristic is brittle but fixes deduplication in RocketTile.
 2017-09-19 17:47:24 -07:00
Andrew Waterman
72bd89a2af Add another AddressDecoder debug message 2017-09-19 17:47:17 -07:00
Andrew Waterman
fb2ad11347 Improve AddressDecoder optimization function 
This function is better 27% of the time but worse 6% of the time.
 2017-09-19 17:47:12 -07:00
Henry Cook
8db5bbbae0 try to give seqmems clearer names 2017-09-19 13:41:11 -07:00
Megan Wachs
826fc8ba61 Merge remote-tracking branch 'origin/master' into test_mode_reset 2017-09-18 09:50:27 -07:00
Andrew Waterman
d93d7b9fa4 Only merge stores that aren't yet pending 
This fixes a deadlock (and possibly memory corruption, though that is
unconfirmed).  The following sequence manifests it, assuming t0
is 32-byte aligned:

    sw t0, 0(t0)
    sw t0, 16(t0)
    lw t1, 4(t0)
    lw t2, 4(t0)
 2017-09-17 15:01:07 -07:00
Megan Wachs
c85333f826 Merge remote-tracking branch 'origin/test_mode_reset' into test_mode_reset 2017-09-17 13:51:46 -07:00
Megan Wachs
215e072e5c test_mode_reset: fix typos 2017-09-17 13:51:40 -07:00
Henry Cook
9b75dd7e5b Merge branch 'master' into test_mode_reset 2017-09-15 17:26:11 -07:00
Megan Wachs
641a8e7eab test_mode_reset: Correct some gender issues. Tie off signals in the test harness 2017-09-15 16:36:35 -07:00
Megan Wachs
6cda4504ac test_mode_reset: use a cleaner interface with bundles and options instead of individual signals 2017-09-15 12:30:39 -07:00
Megan Wachs
ffc514d1bc test_mode_reset: Add missing file 2017-09-14 13:17:37 -07:00
Megan Wachs
a0396b63e8 test_mode_reset: fix one bulk-connect gender issue 2017-09-14 13:16:13 -07:00
Megan Wachs
44edc5fdc3 test_mode_reset: Use simpler apply() method 2017-09-14 13:16:13 -07:00
Megan Wachs
82c00cb656 reset_catch: Allow Test Mode Overrides 2017-09-14 13:16:13 -07:00
Henry Cook
e50d14415e tilelink: more verbose requires 2017-09-13 11:25:42 -07:00
Henry Cook
56dae946b6 coreplex: MemoryBusParams.beatBytes also based on XLen 2017-09-13 11:25:42 -07:00
Henry Cook
b86f4b9bb7 config: use Field defaults over Config defaults 
Also rename some keys that had the same class name as their value's class name.
 2017-09-13 11:25:42 -07:00
Henry Cook
a7540d35b7 ports: use BigInts instead of Longs and the new x"..." context 2017-09-13 11:25:42 -07:00
Henry Cook
37c5af1c0d diplomacy: add x"..." string context 
Enables hex address literals containing underscores.
Converts them to BigInts.
 2017-09-13 11:25:42 -07:00
Henry Cook
063ca0ed4a Merge pull request #983 from freechipsproject/kill-paddrbits 
Remove global fields PAddrBits and ResetVectorBits
 2017-09-11 12:51:10 -07:00
Andrew Waterman
1f606d924f Don't perform in-place correction if there was a recent store (#988) 
Since the correction updates the entire word, the WAW hazard detection
logic is not sufficient to prevent overwriting a recent store.  So,
re-read the word after all pending stores have drained.
 2017-09-08 16:26:54 -07:00
Henry Cook
9c0bfbd500 tile: remove global Field ResetVectorBits 
Reset vector width is determined by systemBus.busView.
Also move some defs from HasCoreParameters to HasTileParameters.
 2017-09-08 14:50:59 -07:00
Henry Cook
3133c321b7 scratchpad: remove dependency on HasCoreParameters 2017-09-08 13:55:40 -07:00
Henry Cook
e46aeb7342 tile: remove PAddrBits in favor of SharedMemoryTLEdge 2017-09-08 13:53:36 -07:00
Wesley W. Terpstra
e7de7f3e82 Merge pull request #985 from freechipsproject/flop-interrupts 
Add Parameters to diplomatic edges
 2017-09-08 13:16:11 -07:00
Andrew Waterman
53dfc5e9be Remove overzealous assertion (#987) 
This assertion made sure the D$ controller was able to write the tag RAM
when a cache line was refilled.  However, it is benign if it fails to do
so: the metadata is invalid at this point, so the miss will simply happen
a second time.

This happens when resolving a tag ECC error during hit-under-miss.
 2017-09-07 18:17:56 -07:00
Wesley W. Terpstra
e723a3f42b MemoryBus: fanout the A for performance 2017-09-07 16:03:35 -07:00
Wesley W. Terpstra
6879f5bfb1 tilelink: Xbar now allows for fanout control 2017-09-07 16:03:35 -07:00
Wesley W. Terpstra
e831acba9c adapters: support bulk connections 2017-09-07 16:03:35 -07:00
Wesley W. Terpstra
06a244f9f9 diplomacy: rename {Left,Right}Star to refer to {Source,Sink}Cardinality 2017-09-07 16:03:35 -07:00
Wesley W. Terpstra
bef593c21a diplomacy: edges now capture their Parameters 2017-09-07 16:03:35 -07:00
Wesley W. Terpstra
80ed27683e diplomacy: protect against API leakage 2017-09-07 16:03:35 -07:00
Wesley W. Terpstra
1365c5f90c diplomacy: implement DisableMonitors scope 2017-09-07 16:03:35 -07:00
Wesley W. Terpstra
a450357744 tilelink: Monitor construction method is unconditional 
Whether or not a Monitor should be placed is decided by diplomacy.
 2017-09-07 16:03:35 -07:00
Wesley W. Terpstra
7a8364ef08 diplomacy: leverage new Parameters defaults 2017-09-07 16:03:35 -07:00
Wesley W. Terpstra
655a08f12e config: support default values for Field[T] keys 2017-09-07 16:03:35 -07:00
Wesley W. Terpstra
09d8d476c5 config: require Parameters keys to be Field[T] 
This has been good practice for ages. Enforce it.
 2017-09-07 16:03:35 -07:00
Wesley W. Terpstra
42f1ae27fc Xbar: use the IdentityModule to encourage wider fanout 2017-09-07 16:03:35 -07:00
Wesley W. Terpstra
5626cdd18f util: add the IdentityModule, useful to dedup wires 2017-09-07 16:03:35 -07:00
Wesley W. Terpstra
1a87ed1193 coreplex: add externalSlaveBuffers configuration option 2017-09-07 16:03:35 -07:00
Wesley W. Terpstra
fd8a51a910 coreplex: rename externalBuffers to externalMasterBuffers 2017-09-07 16:03:35 -07:00
Wesley W. Terpstra
4911a7d44f tilelink Bus: toAsyncSlaves now supports BufferChains 2017-09-07 16:03:35 -07:00
Wesley W. Terpstra
040f7e1d49 tilelink: add Bus.toSyncSlaves for easy BufferChain attachment 2017-09-07 16:03:35 -07:00
Wesley W. Terpstra
d5c6494f59 tilelink: Bus.toRationalSlaves can have a BufferChain 2017-09-07 16:03:35 -07:00
Wesley W. Terpstra
80965e8230 tilelink Buffer: use new :=? adapter API 2017-09-07 16:03:35 -07:00
Wesley W. Terpstra
1b705f62f6 diplomacy: support :=? for unknown star inference 2017-09-07 16:03:35 -07:00
Wesley W. Terpstra
6bfea86dbf config: support p.lift(key) to optionally return a value 2017-09-07 16:03:34 -07:00
Wesley W. Terpstra
2d93262f71 RationalCrossing: use ShiftQueues 
These are faster and small don't cost much more.
 2017-09-07 16:03:34 -07:00
Wesley W. Terpstra
50d5d8c1fd ShiftQueue: added a helper object 2017-09-07 16:03:34 -07:00
Wesley W. Terpstra
3e3024c256 ShiftQueue: fix bug in !flow case 2017-09-07 16:03:34 -07:00
Wesley W. Terpstra
ed70b243bd plic: support a configurable number of interrupt register stages 2017-09-07 16:03:34 -07:00
Wesley W. Terpstra
9b55063de6 clint: support a configurable number of interrupt register stages 2017-09-07 16:03:34 -07:00
Megan Wachs
126d56b254 synchronizers: I learn how foldRight works 2017-09-07 10:48:27 -07:00
Megan Wachs
1da6cb85ab shiftReg: Make it so that register '0' is always closest to the q output, regardless of the type of shift register created. 2017-09-07 09:57:50 -07:00
Megan Wachs
dcafb5fea3 Merge remote-tracking branch 'origin/master' into async_reg 2017-09-06 11:07:19 -07:00
Megan Wachs
3c4b472f66 shift regs: remove some unnecessary primitives, and add some that actually are necessary 2017-09-06 10:37:59 -07:00
Jim Lawson
f1b7666d21 Jtagresettobool - add explicit toBool cast now required on reset. (#984) 
Add explicit toBool cast on reset, for chisel3 compatability
 2017-09-06 09:49:47 -07:00
Megan Wachs
777f052f95 regs: Add named/initial value ShiftRegister primitives so they are all in one place 2017-09-05 17:32:53 -07:00
Wesley W. Terpstra
b1cacc56ad SystemBus: restore correct order of FIFOFixer and Buffer 2017-09-05 16:41:39 -07:00
Wesley W. Terpstra
b74a419bfb FrontBus: FIFOFixer should not have a buffer between it and Xbar 2017-09-05 16:27:57 -07:00
Megan Wachs
e9e46db600 sync reg: Rename the file to reflect the more generic shift registers also in the file. 2017-09-05 15:54:25 -07:00
Megan Wachs
5df23c5514 Synchronizers: remove some newlines and unncessary gen's 2017-09-05 15:17:21 -07:00
Wesley W. Terpstra
e65f49b89a FrontBus: attach to splitter for cross-chip visibility 2017-09-05 15:03:41 -07:00
Wesley W. Terpstra
5886025b1a sbus => pbus: 2 buffers should already be enough 
There is a buffer on the sbus backside.
There is a buffer on the pbus frontside.

Between them is only an AtomicAutomata.
That should be enough for most designs.
 2017-09-05 15:03:38 -07:00
Henry Cook
a902e15987 pbus: clarify that we are adding buffers when attaching to sbus 2017-09-05 15:03:38 -07:00
Henry Cook
8fc4d78c84 frontbus: provide fifofixer on the side of the front bus where masters connect 2017-09-05 15:03:38 -07:00
Megan Wachs
667d966410 TLBuffer: Create a wrapper module for TLBufferChain, to allow for more stable naming 2017-09-05 15:03:38 -07:00
Megan Wachs
94f06dc85c pbus: turn down overkill buffering between PBus and SBus 2017-09-05 15:03:38 -07:00
Megan Wachs
c353f68dc0 buses: name dummy buffers too 2017-09-05 15:03:38 -07:00
Henry Cook
3bde9506c6 coreplex: allow buffer chains on certain bus ports 2017-09-05 15:03:36 -07:00
Megan Wachs
57d0360c35 frontbus: Name the connection. 2017-08-30 18:07:34 -07:00
Megan Wachs
c99afe4c66 buses: Name all the things. 2017-08-30 17:31:42 -07:00
Henry Cook
32cb358c81 coreplex: include optional tile name for downstream name stabilization 2017-08-30 15:48:55 -07:00
Megan Wachs
183fefb2b9 Front/SystemBus: allow naming the intermediate TLNodes that get sprinkled in 2017-08-30 15:27:56 -07:00
Wesley W. Terpstra
d5b62dffda SystemBus: add stupidly many (4 more) buffers from sbus=>pbus 
This should probably be reverted.
 2017-08-30 14:22:49 -07:00
Henry Styles
f7330028cc Add optional frontbus for peripherals mastering into SBus. Switch FF and Buffer order on non-tile masters into SBus. Buffer non-L2 side of splitter 2017-08-30 14:22:49 -07:00
Wesley W. Terpstra
173f185b17 Merge pull request #976 from freechipsproject/system-buffer 
SystemBus: add output buffering
 2017-08-30 23:22:13 +02:00
Wesley W. Terpstra
656609d610 SystemBus: split FIFOFixers along bus boundaries 
If you have a system with a lot of periphery slaves, you wan to FIFO fix
them on the periphery bus rather than paying the circuit cost at the sbus.
 2017-08-30 13:28:11 -07:00
Megan Wachs
a3bc5f2e33 synchronizers: Add a generic shift register and then extend from it, since an asynchronously resettable shift register is also a useful primitive 2017-08-30 12:59:16 -07:00
Megan Wachs
8139014c9e syncrhonizers: Remove unused sync from superclass 2017-08-30 12:33:03 -07:00
Megan Wachs
9dd6c4c32d synchronizers: New chisel ways of cloning type and use simpler lambda function 2017-08-30 12:11:14 -07:00
Megan Wachs
bd32f0c122 synchronizers: properly pass parameters up to the superclass 2017-08-30 11:58:25 -07:00
Megan Wachs
483e63da19 synchronizers: Correctly pass the width through 2017-08-30 11:50:25 -07:00
Megan Wachs
a62ce0afe6 TLBuffer: Add a nodedebugstring for quick browsing of the properties of the buffer. 2017-08-29 10:36:46 -07:00
Megan Wachs
c473538e36 Merge remote-tracking branch 'origin/master' into async_reg 2017-08-28 17:19:03 -07:00
Megan Wachs
451334ac73 Add 1-deep synchronizer register for output of AsyncQueue 2017-08-28 17:18:54 -07:00
Wesley W. Terpstra
bf19440db5 SystemBus: use a full buffer on slaves 2017-08-26 02:47:04 -07:00
Megan Wachs
85c39b2f97 syncregs: Not sure the use case for SynchronizerShiftRegInit, so remove it YAGNI 2017-08-24 17:47:04 -07:00
Megan Wachs
4e773f4738 syncregs: Use synchronizer primivites for LevelSyncCrossing 2017-08-24 17:42:31 -07:00
Megan Wachs
130b24355f syncregs: Use synchronizer primitives for IntXing 2017-08-24 17:39:07 -07:00
Megan Wachs
8b462d1595 syncregs: Use common primitives for AsyncQueue grey code synchronizers 2017-08-24 17:34:07 -07:00
Megan Wachs
3461cb47cc syncregs: Make Reset catcher use the synchronizer primitive 2017-08-24 17:26:38 -07:00
Megan Wachs
c78ee9f0e4 syncreg: Refactor common code 2017-08-24 17:18:04 -07:00
Megan Wachs
d83a6dc6af syncregs: Add utilities for Synchronizing Shift Registers 2017-08-24 16:55:17 -07:00
Megan Wachs
7f683eeb24 async_regs: Make modules have predictable names 2017-08-24 15:33:53 -07:00
Megan Wachs
0f75ebee92 async_reg: Rename the file to match scalastyle 2017-08-24 15:31:29 -07:00
Megan Wachs
103b6bc6d3 systemBus: allowing naming the TLBuffers which get inserted 2017-08-24 14:49:12 -07:00
Wesley W. Terpstra
17134125e1 SystemBus: remove misnamed functions (#972) 
These functions were actually for cross connecting chips.
 2017-08-24 23:35:01 +02:00
Andrew Waterman
82df766f4a Merge pull request #963 from freechipsproject/interrupt-order 
Respect ISA requirements on interrupt priority order
 2017-08-18 00:10:19 -07:00
Andrew Waterman
8087a205cc Remove redundant check in interrupt priority encoding 
chooseInterrupts already sorts M interrupts above S interrupts.
 2017-08-17 22:23:42 -07:00
Andrew Waterman
cbe7c51b50 Respect ISA requirements on interrupt priority order 
a62e76cb16
 2017-08-17 21:27:08 -07:00
Shreesha Srinath
b1719cfee0 Fixing requirements for PAddrBits (#961) 
Previously, the requirement for PAddrBits only checked to be equal or greater than the bundle bits. Changing it to check for these to match exactly as for cases when the PAddrBits greater than address bits we could run into scenarios which cause possible address wrap around issues.
 2017-08-17 11:53:59 -07:00