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Commit Graph

4776 Commits

Author SHA1 Message Date
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.
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
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)
* diplomacy: add more verbose requirements
* bump firrtl
2017-04-20 13:18:39 -07:00
Henry Cook
ef8a819763 Miscellaneous periphery improvements (#689)
* 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.
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
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
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
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
- 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
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
Yunsup Lee
aad4f350bf bump tools 2017-04-17 10:28:33 -07:00
Andrew Waterman
a454edaaf7 Treat exceptions as steps for the purposes of single-stepping 2017-04-17 10:28:33 -07:00
Megan Wachs
9cf86fa105 debug: checkpoint pointing to riscv-tools that picks up some tweaks in the debug riscv-tests 2017-04-17 10:28:33 -07:00
Megan Wachs
9a6e7afc93 debug: bump OpenOCD to latest version of newprogram (with Examined RISC-V core message) 2017-04-17 10:28:33 -07:00
Megan Wachs
af6b2d8051 debug: DATA Region has to be aligned for ld/sd to correctly detect 64-bit cores. 2017-04-17 10:28:33 -07:00
Megan Wachs
b44d5f9386 debug: correctly consider .transfer bit in COMMAND 2017-04-17 10:28:33 -07:00
Megan Wachs
79477fbea6 debug: Properly consider 'transfer' bit 2017-04-17 10:28:33 -07:00
Megan Wachs
2dc4be6294 debug: remove preexec. Simplify the state machine since you can always just 'execute' once. 2017-04-17 10:28:33 -07:00
Megan Wachs
c5cb8b714f debug: Bump version and location of OpenOCD to pick up fix for off-by-1 in hartsel 2017-04-17 10:28:33 -07:00
Wesley W. Terpstra
db5d0737f0 Merge pull request #682 from ucb-bar/jchang
Add hooks to print debug information into the graphml file
2017-04-14 19:35:17 -07:00
Wesley W. Terpstra
7b8af96fc2 diplomacy: use circles for nodes again 2017-04-14 18:09:14 -07:00
Wesley W. Terpstra
2f22fca615 rocket: reverse input edge for better output 2017-04-14 18:09:14 -07:00
Wesley W. Terpstra
ae8fd0c60f graphML: don't draw unconnected LazyModules 2017-04-14 18:09:14 -07:00
Wesley W. Terpstra
fcf774f125 graphML: reverse interrupt arrows 2017-04-14 18:09:14 -07:00
Jacob Chang
d3925f0998 Add hooks to print debug information into the graphml file 2017-04-14 18:09:14 -07:00
Wesley W. Terpstra
153178ac4f Merge pull request #678 from ucb-bar/rammodel-atomics
RAMModel atomics
2017-04-14 18:08:33 -07:00
Wesley W. Terpstra
ba8be17c9a tilelink2: RAMModel, use CRC16 to check AMO response 2017-04-14 15:13:40 -07:00