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Author SHA1 Message Date
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. TerpstraandGitHub ee66fd28eb Merge pull request #400 from ucb-bar/better-crossing-asserts 
Better crossing reset handling
 2016-10-14 19:19:37 -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. TerpstraandHenry Cook 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. TerpstraandGitHub 9655621aa8 Merge pull request #396 from ucb-bar/decoupled 
TL2 Decoupled
 2016-10-13 19:09:58 -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. TerpstraandGitHub 980bb3fbfd Merge pull request #395 from ucb-bar/axi4-fragmenter 
AXI4 fragmenter
 2016-10-13 17:01:53 -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. TerpstraandGitHub 73e9508c09 Merge pull request #387 from ucb-bar/safer-crossings 
Safer crossings
 2016-10-10 14:44:33 -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. TerpstraandGitHub b6bc6b7a4d Merge pull request #382 from ucb-bar/axi4 
axi4: diplomacy capable AXI4 with TL2 bridge
 2016-10-10 13:11:12 -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
Wesley W. TerpstraandMegan Wachs e5ac0f717f tilelink2: split isolation gates by direction 2016-10-07 12:03:43 -07:00
Wesley W. TerpstraandGitHub 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. TerpstraandGitHub 72e8c6f589 Merge pull request #379 from ucb-bar/axi-prefactor 
Axi prefactor
 2016-10-03 16:49:37 -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. TerpstraandYunsup Lee f2ca2178bf graphML: CTO's like colour 2016-10-03 15:05:45 -07:00
Wesley W. TerpstraandYunsup Lee fe0875b084 LazyModule: output final verilog Module name 2016-10-03 15:05:45 -07:00
Wesley W. TerpstraandYunsup Lee 0a4ef66894 BaseTop: record top module; more general than GraphML 2016-10-03 15:05:45 -07:00
Wesley W. TerpstraandAndrew Waterman 52c1a053ff tilelink2 RegisterRouter: test fully Decoupled behaviour 2016-10-02 02:24:02 -07:00
Wesley W. TerpstraandAndrew Waterman 422e6357a4 tilelink2 RegisterCrossing: Queues go from RV to Irrevocable 
AsyncQueue is still a Queue.
 2016-10-02 02:24:02 -07:00
Wesley W. TerpstraandAndrew Waterman 02f89fb530 RegMapper: clarify interface is DecoupledIO 2016-10-02 02:24:02 -07:00
Wesley W. TerpstraandAndrew Waterman 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. TerpstraandAndrew Waterman 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
Wesley W. TerpstraandGitHub 0ebab0976a tilelink2 Isolation: add enable signal (#368) 2016-09-30 04:54:40 -07:00
Wesley W. TerpstraandGitHub 891a253bee Merge pull request #367 from ucb-bar/tl2-isolation 
Tl2 isolation
 2016-09-30 02:19:44 -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
Wesley W. TerpstraandGitHub 8730887baa Merge pull request #364 from ucb-bar/tl2-async-nodes 
Tl2 async nodes
 2016-09-29 18:18:31 -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