Henry Cook
1bdb247002
Merge pull request #697 from ucb-bar/async_queue_option
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Add narrowData option to AsyncQueue.
2017-04-25 17:43:28 -07:00
Henry Cook
7f5f1c7631
Merge branch 'master' into async_queue_option
2017-04-25 14:58:11 -07:00
Henry Cook
95591cc608
Merge pull request #704 from ucb-bar/verbose-require
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Miscellaneous uncore cleanups
2017-04-25 14:57:58 -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 )
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* 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 )
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@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
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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
Andrew Waterman
3b2c15b648
Use tininess-after-rounding in FPU
2017-04-24 02:01:15 -07:00
Andrew Waterman
c36c171202
Use correct interrupt priority order
2017-04-24 02:01:15 -07:00
Andrew Waterman
bf861293d9
Add ShiftQueue; use it
2017-04-24 02:01:15 -07:00
Andrew Waterman
d24d8ff84b
Don't stall the frontend, making it easier to add more features later
2017-04-24 02:01:15 -07:00
Andrew Waterman
061a0adceb
Fetch smaller parcels from the I$
2017-04-24 02:01:15 -07:00
Ben Keller
0aa8f7d61d
Add narrowData option to AsyncQueue.
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This option reduces the number of wires that cross the clock boundary.
This can be a useful feature if the clock boundary coincides with
a voltage boundary, in which case the number of level shifters is reduced.
However, this introduces a path that crosses from sink->source->sink domain,
so the option is disabled by default.
2017-04-21 16:31:17 -07:00
Megan Wachs
c72b15f2a0
Down with any require() statement that makes me RTFC
2017-04-21 15:44:42 -07:00
Andrew Waterman
458d80cb18
For Verilator, rename +start to +dump-start to match VCS
2017-04-20 17:00:46 -07:00
Andrew Waterman
2faf8ea239
Add +dump-start=N option to VCS
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Starts dumping waveform on cycle N.
Can control stop cycle with +max-cycles.
2017-04-20 17:00:46 -07:00
Henry Cook
54820e094d
Make more require statements in diplomacy verbose ( #693 )
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* diplomacy: add more verbose requirements
* bump firrtl
2017-04-20 13:18:39 -07:00
Henry Cook
ef8a819763
Miscellaneous periphery improvements ( #689 )
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* fifofixer: work around zero-width wires for single source id
* periphery: sourceshrinker takes maxInFlight parameter
2017-04-20 11:28:00 -07:00
Megan Wachs
9002e7e532
debug: Debug Module needs to handle DMI NOPs even if DTM won't send them.
2017-04-20 10:19:50 -07:00
Megan Wachs
cc7f0a5b7a
debug: whitespace cleanup
2017-04-20 10:19:50 -07:00
Megan Wachs
5934779082
debug: Clean up ValidReg assertion.
2017-04-20 10:19:50 -07:00
Megan Wachs
0c013a56c0
debug: Make DMI NOPs really NOPs.
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This simplifies SW design and CDC issues.
2017-04-20 10:19:50 -07:00
Andrew Waterman
67404a665b
When not using a cache, LR/SC isn't legal even on cacheable memory
2017-04-20 08:47:03 -07:00
Megan Wachs
1be13d6b4c
PLIC: To avoid hazard between enable -> claim, enforce concurrency=1
2017-04-19 21:37:37 -07:00
Megan Wachs
3dfd584075
regmapper: remove the Pipe in the RegMapper Queue
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With this pipe here, devices which declare concurrency > 0
actually accept transactions on the same cycle they complete
the previous one. This is unexpected behavior.
2017-04-19 21:37:37 -07:00
Wesley W. Terpstra
b4d17c76d1
coreplex: make rational+synchronous crossing configurable ( #688 )
2017-04-19 16:16:05 -07:00
Megan Wachs
408107447c
debug: DMI response should be busy, not zero, when there is an error. ( #685 )
2017-04-18 21:41:52 -07:00
Andrew Waterman
d82a0dc231
Mitigate D$ exception critical path, yet again
2017-04-18 00:47:58 -07:00
Andrew Waterman
c99ce7ce5d
Only report D$ exceptions on not-nacked accesses
2017-04-18 00:47:58 -07:00
Andrew Waterman
5934c7b4b9
Fix description of LR/SC test suites
2017-04-18 00:47:58 -07:00
Andrew Waterman
a956b78dd2
In TLBPermissions, merge across some region types
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We only care whether they have side effects or not.
2017-04-18 00:47:58 -07:00
Andrew Waterman
6de6f38894
Pipeline D$ exception response into s2
2017-04-18 00:47:58 -07:00
Andrew Waterman
657f4d4e0c
Permit early grant acks to broadcast hub
2017-04-18 00:47:58 -07:00
Andrew Waterman
cc9ec1d51a
Send D$ grant acks early; accept release acks early
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We now need to block the B-channel for a few cycles after a grant to
allow the processor to get at least one request through, preventing
livelock.
2017-04-18 00:47:58 -07:00
Andrew Waterman
728569c717
Reduce access-exception generation critical path
2017-04-18 00:47:58 -07:00
Andrew Waterman
a59a3f15e4
Disable LR/SC tests for scratchpad configs
2017-04-18 00:47:58 -07:00
Andrew Waterman
c366007a0d
Tighten PMAs for LR/SC and misaligned accesses
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- LR/SC on cacheable memory only (not even scratchpad)
- No misaligned accesses on regions with get/put-effects
2017-04-18 00:47:58 -07:00
Andrew Waterman
74a7838de0
In TLBPermissions, don't merge regions of different types
2017-04-18 00:47:58 -07:00
Andrew Waterman
7871ec82c4
Guarantee probe forward progress during LR storm
2017-04-18 00:47:58 -07:00
Yunsup Lee
71eaed7d60
Merge pull request #675 from ucb-bar/debug_no_preexec
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More Debug Updates to bring in line with spec
2017-04-18 03:10:27 +09:00
Yunsup Lee
1ad5ef7aa2
bump chisel
2017-04-17 10:28:33 -07:00
Andrew Waterman
debcbca7de
Make PMP tolerant to PA size << VA size
2017-04-17 10:28:33 -07:00
