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1634 Commits

Author SHA1 Message Date
Andrew Waterman d45fc0d670 Merge pull request #785 from freechipsproject/fmul-fix 
Fix FMUL sign of zero
 2017-06-06 00:46:03 -07:00
Andrew Waterman 07ad9203ff Fix FMUL sign of zero 2017-06-05 17:35:42 -07:00
Megan Wachs 8d2e9a8631 Merge remote-tracking branch 'origin/master' into plusarg_docstring 2017-06-05 17:23:44 -07:00
Wesley W. Terpstra 87a5665e43 axi4: only block writes if SAME master has outstanding reads (#782) 
* axi4: only block writes if SAME master has outstanding reads
* tilelink2: ToAXI4 rename variable
TL uses sources, not IDs like AXI. Keep it less confusing.
* tilelink2: ToAXI4 improve stall circuit delay
Don't bother decoding the AXI ID to compute stall.
 2017-06-05 16:54:00 -07:00
Megan Wachs 7afd5e6070 remove unnecessary whitespace. Fix grammar. 2017-06-05 16:18:57 -07:00
Megan Wachs 8440c4b1c4 plusarg_reader : Add the ability to add a documentation string. 2017-06-05 16:16:52 -07:00
solomatnikov 274d908d98 Changed TLXbar arbitration policy to roundRobin (#781) 2017-06-05 10:20:28 -07:00
Andrew Waterman 16ecbdd5b2 Reduce fanout on critical I$ miss signal 2017-06-02 20:45:50 -07:00
Andrew Waterman 27b143013f Improve ITLB QoR 
- No need to check cacheability
- Remove a gate delay from PMP path
 2017-06-02 20:45:50 -07:00
Andrew Waterman 0ffb2c8baf Simplify and improve QoR of ShiftQueue 2017-06-02 20:44:52 -07:00
Andrew Waterman 8229bdee03 Remove FP unboxing from FMA critical path 2017-06-02 20:44:52 -07:00
Andrew Waterman 7504b47bbe Improve code quality in FP->FP and Int->FP units 2017-06-02 20:44:52 -07:00
Andrew Waterman 84c4ae775f Improve QoR for FP->Int conversions 2017-06-02 20:44:52 -07:00
Andrew Waterman 07968df183 Refactor FP Classify 2017-06-02 20:44:52 -07:00
Andrew Waterman 6ecd58a977 Incorporate new div/sqrt unit 2017-06-02 20:44:15 -07:00
Wesley W. Terpstra b1917e7915 coreplex: add an ISPPort trait to add cross-connect points 2017-06-02 20:43:23 -07:00
Wesley W. Terpstra 81d372137a coreplex: unconditionally insert a Splitter between tiles and l1tol2 2017-06-02 20:43:21 -07:00
Wesley W. Terpstra d002cec6ac NodeNumberer: add an adapter to map inter-chip fabrics 2017-06-02 20:42:17 -07:00
Wesley W. Terpstra 5a2a6b0386 diplomacy: add a CustomNode type that allows direct overload of methods 2017-06-02 20:42:17 -07:00
Wesley W. Terpstra fed1f53afa tilelink2: add a TLSplitter to be used for the ISP port 2017-06-02 20:42:17 -07:00
Wesley W. Terpstra a4bf678954 tilelink2: fix latent Xbar truncation bug 
This was introduced when we switched to HeterogeneousBag for diplomatic IO.
It seems a lucky coincidence that nothing has run into this yet!
 2017-06-02 20:42:16 -07:00
Wesley W. Terpstra ce12a64f4b tilelink2: support SplitterNodes 2017-06-02 20:42:16 -07:00
Wesley W. Terpstra de39af7f65 tilelink2: make some Xbar methods reusable 2017-06-02 20:42:16 -07:00
Wesley W. Terpstra 0a2a93c27d diplomacy: add the new Splitter node type 2017-06-02 20:42:16 -07:00
Wesley W. Terpstra c695237050 diplomacy: make :=* and :*= resolution more flexible 2017-06-02 20:42:16 -07:00
edwardcwang cdbf67be68 Add a note to wire up jtag_mfr_id (#778) 
Close #774
 2017-06-02 18:53:14 -07:00
Wesley W. Terpstra e0741a2097 axi4: don't map unused masters into TL source ID space 2017-06-02 16:30:16 -07:00
Wesley W. Terpstra 80c63c0da6 rocket: include hartid in cache master names 2017-06-02 15:52:23 -07:00
Wesley W. Terpstra d25ad10592 diplomacy: require masters to have a name 2017-06-02 15:52:20 -07:00
Wesley W. Terpstra 475ac93cdf coreplex: print memory map using DTS, also write a JSON for it 2017-06-02 14:27:40 -07:00
Wesley W. Terpstra ae8734da05 diplomacy: report cacheability in ResourceAddress 2017-06-02 14:27:40 -07:00
Wesley W. Terpstra 985d9750e6 tilelink2: Xbar QoR improvement 2017-06-02 14:27:40 -07:00
Wesley W. Terpstra 9317a00896 tilelink2: ToAXI4, sort and print AXI IDs used 2017-06-02 14:27:37 -07:00
Wesley W. Terpstra eb14329c63 tilelink2: only combine managers of the same resources 2017-06-01 15:34:43 -07:00
Wesley W. Terpstra 1f531b1593 tilelink2: improve round robin arbiter QoR 2017-06-01 15:34:40 -07:00
Wesley W. Terpstra 5994714970 diplomacy: move manager unification to meta-data only 
Now that PMA circuits already perform address unification, there is
no QoR gained by throwing away the true and complete diplomatic
address+node information. Defer the unification to pretty printing
the DTS address map only.
 2017-06-01 15:30:20 -07:00
Wesley W. Terpstra 0fe625c52f diplomacy: improve PMA circuit QoR 2017-06-01 15:30:20 -07:00
Yunsup Lee 6124bf0cc2 sort entires in the printed address map (#773) 2017-05-31 07:45:46 -10:00
Jacob Chang e3e77d68e6 PTW now does not require atomic memory operations, so take out the requirement (#767) 
Bug fix in CSR which manifest itself when compiling a config with no extension
 2017-05-26 13:11:15 -07:00
Andrew Waterman dbc5e7c494 Add TLB miss performance counters (#762) 2017-05-23 12:52:25 -07:00
Andrew Waterman b2b4c1abcd Separate tag ECC and data ECC options (#761) 2017-05-23 12:51:48 -07:00
Henry Cook 940614625e TLCacheCork: unsafe flag now _really_ unsafe (#760) 2017-05-22 19:37:11 -07:00
Wesley W. Terpstra 7f1d3c445f Plusargs -- tilelink timeout detection from the command line (#752) 
* util: PlusArg gives Chisel access to the command-line

* tilelink2: add a progress watchdog to Monitors
 2017-05-18 22:49:59 -07:00
Wesley W. Terpstra 748a48f667 unittest: balance the run times of the tests 2017-05-17 14:02:59 -07:00
Wesley W. Terpstra bea2489507 unittest: make overall test duration configurable 2017-05-17 14:02:59 -07:00
Wesley W. Terpstra c8ba6b2feb unittests: accept a configurable number of transactions to run 2017-05-17 14:02:59 -07:00
Wesley W. Terpstra f6f40b1442 unit tests: all should accept timeout override 2017-05-17 14:02:59 -07:00
Wesley W. Terpstra 8c3736e0dc tilelink2: remove ready-valid fuzzer obsoleted by TLDelayer 2017-05-17 06:47:21 -07:00
Wesley W. Terpstra 1f2236cdb3 diplomacy: appease Jack by removing unused 1st bundles argument 2017-05-17 06:46:07 -07:00
Wesley W. Terpstra f2d16d49c2 tilelink2: don't widen TLMonitor interface unnecessarily 2017-05-17 06:29:03 -07:00
Wesley W. Terpstra 191dad7800 diplomacy: provide connect access to edges without bundles 
Forcing the bundles to exist early can mess up module ownership.
 2017-05-17 06:29:03 -07:00
Megan Wachs d8996ea85f Empty commit to force travis 2017-05-16 22:56:58 -07:00
Henry Cook 5f22e91a7f rocc: fix RoccExampleConfig 2017-05-16 16:44:53 -07:00
Henry Cook a19fc2549e tile: add tileBus xbar 2017-05-16 16:12:01 -07:00
Wesley W. Terpstra 3e2b477c0a rational: adjust comments and add a case for N:M 2017-05-14 15:16:33 -07:00
Wesley W. Terpstra 2119df5a60 vsrc: add ClockDivider3 used to simulate unaligned clocks 2017-05-14 15:05:55 -07:00
Wesley W. Terpstra 05e7501e7a build: include chiselName and give an example of using it (#738) 2017-05-12 06:25:58 -07:00
Wesley W. Terpstra 18725a05b0 DTS tweaks (#740) 
* rocket: do not report 's' in isa string

* rocket: report the micro-architecture of the core
 2017-05-12 05:32:57 -07:00
Henry Cook 5f3a4ada1b diplomacy: add legalize method to AddressSet 2017-05-10 12:54:24 -07:00
Henry Cook 3af40bff8b tilelink: better address masking for fuzzing 2017-05-10 12:54:24 -07:00
Wesley W. Terpstra 3eaa973da7 tilelink2: add earlyAck to regression 2017-05-09 17:35:26 -07:00
Wesley W. Terpstra 3e7bdcbf5e tilelink2: Fragmenter should ignore error when not valid 2017-05-09 17:35:26 -07:00
Wesley W. Terpstra 43c9f5fe7e tilelink2: keep earlyAck Fragmenter sources distinct 2017-05-09 17:35:22 -07:00
Andrew Waterman 3a9bbd7e58 Merge branch 'master' into vectored-stvec 2017-05-08 14:08:09 -07:00
Wesley W. Terpstra 2d8a49cc06 tilelink2: Fragmenter client must request global FIFO 2017-05-08 00:56:45 -07:00
Wesley W. Terpstra 36f4584bb1 axi4: Test AXI4-Lite in regression 2017-05-08 00:31:35 -07:00
Wesley W. Terpstra 3209e58845 axi4: SRAM support 0 userBits 2017-05-08 00:31:14 -07:00
Wesley W. Terpstra db76ff2d86 axi4: Deinterleaver must gather R also for single ID 
In order to guarantee that a complete R can be sent without
sinking B, the Deinterleaver must do its job even on AXI-Lite.
 2017-05-08 00:17:06 -07:00
Wesley W. Terpstra 8fc27b0bf2 axi4: IdIndexer; a single ID does NOT imply no response interleaving 
Some slaves may never send R until you process their B.
Thus, while there is no read response interleaving, there
is still interleaving between R and B, which breaks AXI4ToTL.
 2017-05-08 00:17:06 -07:00
Wesley W. Terpstra 4847c32599 tilelink: ToAXI4 - must interlock till last beat 
AXI4 makes no guarantee that bursts are handled atomicly.
Thus, you could be part-way through a read burst and suddenly
a write cuts ahead and is visible later, violating FIFO.
 2017-05-08 00:17:06 -07:00
Wesley W. Terpstra 8169ba6411 axi4: IdIndexer now handles 0-width IDs 2017-05-08 00:17:02 -07:00
Andrew Waterman 7eefc12705 Support vectored stvec interrupts, too 
137812654e
 2017-05-07 15:40:08 -07:00
Andrew Waterman c6135a02df Revert "rocket: hard-wire UXL/SXL fields to 0" 
This reverts commit ea0714bfcb.

We've waffled on this matter in the priv spec: 326bec83de
 2017-05-07 15:23:21 -07:00
Andrew Waterman dd1546fd69 Check PPN LSBs for superpage PTEs 
5a32fe8782
 2017-05-05 15:30:09 -07:00
Scott Johnson 1b3b228790 ITIM supports PutPartial 2017-05-04 00:57:52 -07:00
Andrew Waterman 398600d4da Interlock to prevent ITIM hazard when tl.a.valid & tl.d.valid & !tl.d.ready 2017-05-04 00:57:29 -07:00
Scott Johnson 1cc665717d Wes fix for AXI2TL timeout when writes backed up 2017-05-04 00:54:21 -07:00
Andrew Waterman fa6ecdf813 Fix RVC/uncacheable instruction memory performance bug 
9c1d126965 was an incomplete fix, so
sometimes we were requesting pipeline replays when they weren't
necessary.
 2017-05-03 17:52:06 -07:00
Henry Cook 1f1240baf1 fuzzer: allow fuzzing range to be overridden 2017-05-03 15:29:14 -07:00
Megan Wachs f8c92d2669 Merge branch 'master' into pipeline-mmio 2017-05-03 08:37:12 -07:00
Andrew Waterman 4efcb5a139 Increase frontend decoupling (#722) 
Reduce pathological RVC stalls
 2017-05-03 07:54:46 -07:00
Henry Cook 05ca88fb47 Merge branch 'master' into pipeline-mmio 2017-05-03 01:59:59 -07:00
Megan Wachs 922a8ef5e0 local_interrupts: Correct off-by-1 if there is no SEIP 2017-05-02 21:55:25 -07:00
Henry Cook 4dd3345db2 Merge branch 'master' into pipeline-mmio 2017-05-02 16:23:26 -07:00
Andrew Waterman 3a1a37d41b Support PutPartial in ScratchpadSlavePort 2017-05-02 03:07:02 -07:00
Andrew Waterman 938b089543 Remove legacy devices that use AMOALU 
I'm going to change the AMOALU API, and so I'm removing dependent dead code.
 2017-05-02 03:05:41 -07:00
Andrew Waterman f8151ce786 Remove subword load muxing in ScratchpadSlavePort 2017-05-02 00:14:46 -07:00
Andrew Waterman 044b6ed3f9 Improve logical ops in AMOALU 
As with integer ALU, shave off some muxing.
 2017-05-02 00:14:46 -07:00
Andrew Waterman f49172b5bc ScratchpadSlavePort doesn't support byte/halfword atomics 2017-05-02 00:14:46 -07:00
Wesley W. Terpstra fe280187a1 axi4: Fragmenter cuts all input channel readys 
AXI4 forbids any input to lead combinationally to an output.For the AXI4ToTL
direction, front-load the cuts for {AW, AR, W}.readyAXI4ToTL makes the R and
B channels irrevocable.
 2017-05-01 22:53:41 -07:00
Wesley W. Terpstra 3d06f01a2c rocket: turn on early ack for ITIM 2017-05-01 22:53:41 -07:00
Wesley W. Terpstra 58a4529cc5 axi4: the last missing piece for safe FIFO ordering 2017-05-01 22:53:41 -07:00
Wesley W. Terpstra b0b5601e8d axi4: ToTL correct error handling 
If there is an illegal AWADDR = 0x2 on a 32-bit bus, remapping it
to an aligned address on the error device may make the mask
inconsistent with the address + size.
 2017-05-01 22:53:41 -07:00
Wesley W. Terpstra 661015a78d axi4: switch arbiter to round robin 2017-05-01 22:53:41 -07:00
Wesley W. Terpstra 976af7a8c7 tilelink2: better width inference for {left,right}OR 2017-05-01 22:53:41 -07:00
Wesley W. Terpstra 40f18e6e43 diplomacy: optimize IdRange overlap detection 2017-05-01 22:53:41 -07:00
Wesley W. Terpstra 30f1f1e7c7 rocket: turn on early ack for DTIM 2017-05-01 22:53:41 -07:00
Wesley W. Terpstra 6ee69454c3 tilelink2: Fragmenter now supports early Ack 2017-05-01 22:53:41 -07:00
Wesley W. Terpstra e09fa866b7 tilelink2: FIFOFixer should NOT change client request status 
Just because some clients are not FIFO does not matter. Downstream
FIFOFixers will still present a legitimate single domain to those
client who care.
 2017-05-01 22:53:41 -07:00
Scott Johnson b040a462c9 Wes's change to remove user bits from external AXI interface, and add 1 cycle latency to make sure external AXI is compliant 2017-05-01 22:53:41 -07:00
Wesley W. Terpstra a71f708dc7 rocketchip: move the Error device to 0x3000 2017-05-01 22:53:41 -07:00
Wesley W. Terpstra d27e1928dd axi4: make maxFlight a per-master parameter 2017-05-01 22:53:40 -07:00
Wesley W. Terpstra e1a072a644 axi4: massage test cases into shape again 2017-05-01 22:53:40 -07:00
Wesley W. Terpstra 9f08c484bd tilelink2: ToAXI4 provide FIFO order semantics 2017-05-01 22:53:40 -07:00
Wesley W. Terpstra 61a6f94196 axi4: get unit tests legal again 2017-05-01 22:53:40 -07:00
Wesley W. Terpstra bf5cb396b9 rocketchip: relax mmio no-interleaving requirement 2017-05-01 22:53:40 -07:00
Wesley W. Terpstra 24f577c156 axi4: Deinterleaver ensures R channel ID does not change till last 2017-05-01 22:53:40 -07:00
Wesley W. Terpstra b4188ee625 axi4: ToTL supporting pipelined MMIO 2017-05-01 22:53:40 -07:00
Wesley W. Terpstra ca2cb033cd rocketchip: fix uses of AXI4 Fragmenter 2017-05-01 22:53:40 -07:00
Wesley W. Terpstra e100a943ea axi4: simplify Fragmenter by using user bits 2017-05-01 22:53:40 -07:00
Wesley W. Terpstra 7a1d107c9e rocketchip: include an ErrorSlave by default 2017-05-01 22:53:37 -07:00
Wesley W. Terpstra 641a4d577a tilelink2: Error device for returning errors on demand 2017-05-01 22:53:02 -07:00
Wesley W. Terpstra a580b17ece axi4: IdIndexer => reduce number of needed ids 2017-05-01 22:53:01 -07:00
Wesley W. Terpstra 06efc01d96 axi4: an adapter to remove user bits 2017-05-01 22:53:01 -07:00
Wesley W. Terpstra f1217519f1 axi4: RegisterRouter; concurrent response illegal in AXI 2017-05-01 22:53:01 -07:00
Wesley W. Terpstra 5163ccd11f axi4: RegisterRouter supports user bits 2017-05-01 22:53:01 -07:00
Wesley W. Terpstra de6ea9b442 axi4: support user bits in SRAM 2017-05-01 22:53:01 -07:00
Wesley W. Terpstra 396ecacda4 AXI4: add an optional user bundle field 2017-05-01 22:53:01 -07:00
Andrew Waterman d6e69066a5 Fix ITIM loads (#716) 
An incorrectly-set ready signal caused bad data to be read from the RAM.
 2017-05-01 17:41:25 -07:00
Andrew Waterman dd85d7e0a0 I$: Don't raise io.resp.valid if io.s1_kill was high previous cycle 
@solomatnikov found the bug.  It doesn't manifest in Rocket because the
Frontend masks io.resp.valid with s2_valid.
 2017-04-28 16:44:58 -07:00
Megan Wachs d67738204f Interrupts: Less Pessimistic Synchronization (#714) 
* interrupts: Less pessimistic synchronization for the different interrupt types. There are some issues with the interrupt number assignments.

* interrupts: Allow an option to NOT synchronize all the external interrupts coming into PLIC

* interrupts: ExampleRocketChipTop uses PeripheryAsyncExtInterrupts. Realized 'abstract' doesn't do what I thought in Scala.

* interrupts: use consistent async/periph/core ordering

* interrupts: Properly condition on 0 External interrupts

* interrupts: CLINT is also synchronous to periph clock
 2017-04-28 14:49:24 -07:00
Andrew Waterman 7416f2a17e Unbreak groundtest 2017-04-28 02:10:33 -07:00
Andrew Waterman 8fd5ecdff8 Set io.cpu.resp.bits.addr for MMIO loads without affecting QoR 2017-04-27 19:50:38 -07:00
Andrew Waterman 7c70aa593e Minor stylistic and QoR improvements to PLIC 2017-04-27 19:35:20 -07:00
Henry Cook 3d0ed80ef6 new parameters ResetVectorBits, MaxHartIdBits, and MaxPriorityLevels 2017-04-27 18:17:31 -07:00
Henry Cook bdb526a9f0 coreplex: DefaultCoreplex => RocketPlex 2017-04-27 18:17:09 -07:00
Andrew Waterman 99de42d34c Swap order of ITIM WidthWidget and Fragmenter 
e99fa057ac accidentally reversed them
 2017-04-27 15:30:02 -07:00
Andrew Waterman 8c10caeef9 Express PMP mask generation with incrementer, not adder 
DC apparently doesn't always pick up the ((x + 1) ^ x) idiom.
Use (x + ~(x + 1)) instead.
 2017-04-27 15:16:29 -07:00
Henry Cook e99fa057ac cleanup scratchpad nodes 2017-04-27 14:02:05 -07:00
Andrew Waterman b2b4725522 Fix zero-width wire issues when ITIM is disabled 2017-04-26 22:43:00 -07:00
Andrew Waterman e23ee274f6 Size hartid field with NTiles, not XLen 2017-04-26 20:11:43 -07:00
Andrew Waterman dc753bfa95 Fix I$ elaboration when ITIM is disabled 2017-04-26 19:35:35 -07:00
Andrew Waterman 80d826b94a Make DTIM deduplicatable 2017-04-26 19:35:35 -07:00
Andrew Waterman 418879a47f Add Instruction Tightly Integrated Memory 2017-04-26 19:35:35 -07:00
Andrew Waterman ee6702e5e0 Support indexing 1-entry Seqs 
It's a zero-width wire special case.

Closes #706.
 2017-04-26 19:35:35 -07:00
Andrew Waterman 2e23d46631 Use val instead of def in ECC calculations 
This allows nicer-looking code to avoid generating lots of redundant nodes.
 2017-04-26 19:35:35 -07:00
Megan Wachs 7ad4cc36f7 debug: Prevent writes to DATA/PROGBUF when busy 2017-04-26 11:11:21 -07:00
Henry Cook 7f5f1c7631 Merge branch 'master' into async_queue_option 2017-04-25 14:58:11 -07:00
Henry Cook 9bb0d92381 Merge branch 'master' into async_queue_option 2017-04-25 11:23:22 -07:00
Henry Cook 60d71efa36 ahb: make hreadyout fuzzing a sram parameter 2017-04-25 11:11:31 -07:00
Henry Cook ca435c2f40 uncore: more verbose requires 2017-04-25 11:11:31 -07:00
Wesley W. Terpstra f3ab23d068 dcache: fix stupidly wrong crossing comparison (#703) 2017-04-25 09:18:41 -07:00
Wesley W. Terpstra 4807ce7ced dcache: put a flow Q to absorb back-pressure without restarting pipeline (#701) 
* dcache: put a flow Q to absorb back-pressure without restarting pipeline

When used with a RationalCrossing, pipelined MMIO does not come out cleanly.
The first beat works, but if the second beat gets stalled, the pipeline is
restarted. This is a quick hacky test to absorb the beats. Perhaps a better
fix can be made to achieve the same effect.

* dcache: provision as few stages as possible
 2017-04-24 23:28:04 -07:00
Wesley W. Terpstra 9c1d126965 Allow speculative fetch to uncacheable memory if it hits in I$ (#700) 
@aswaterman it's in
 2017-04-24 19:12:37 -07:00
Wesley W. Terpstra 11ff4dfbb9 rocket: seip (int 9) is only present if VM is enabled (#699) 2017-04-24 15:58:33 -07:00
Wesley W. Terpstra d0f3004097 tilelink2: help tools save some registers in the WidthWidget (#691) 2017-04-24 15:13:58 -07:00
Andrew Waterman 65928dc6a0 Don't push RAS for "auipc ra, X; jalr ra, ra, Y" 2017-04-24 02:01:15 -07:00
Andrew Waterman 36a7971975 Bypass scoreboard to reduce MMIO latency 2017-04-24 02:01:15 -07:00
Andrew Waterman 845e6f7458 Filter out duplicate test suites 
I botched the refactoring in 5934c7b4b9
 2017-04-24 02:01:15 -07:00
Andrew Waterman f2d4cb8152 Update RAS speculatively from fetch stage 2017-04-24 02:01:15 -07:00