riscv/rocket-chip
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1357 Commits

Author SHA1 Message Date
Andrew Waterman
380c10f7bd Zap conflicting TLB entries, preparing for superpage support 
Superpages create the possibility that two entries in the TLB may match.
This corresponds to a software bug, but we can't return complete garbage;
we must return either the old translation or the new translation.  This
isn't compatible with the Mux1H approach.  So, flush the TLB and report
a miss on duplicate entries.
 2017-03-10 15:58:23 -08:00
Andrew Waterman
b24c43badb Don't double-count release traffic in perfctrs 2017-03-09 16:49:02 -08:00
Andrew Waterman
63f8ce36f6 Avoid VM exceptions in groundtest by setting Accessed bit 2017-03-09 16:48:28 -08:00
Andrew Waterman
4f8f05d635 Add performance counter facility 2017-03-09 13:58:50 -08:00
Andrew Waterman
33b6d48376 Fix haltnot reporting (previously always returned 0) 2017-03-09 13:58:40 -08:00
Andrew Waterman
24a2278fc4 Perform all illegal-instruction detection in ID stage 
This is simpler, reduces what would have become a critical path in
the commit stage, and will make it easier to support the mbadinst
CSR if it is implemented.
 2017-03-09 11:29:51 -08:00
Andrew Waterman
7668827741 Support unrolling the integer divider 2017-03-09 11:29:51 -08:00
Andrew Waterman
74d8d672bf Improve BTB critical path at slight accuracy cost 
Make entries fully associative on lower 14 bits only, not full address.
 2017-03-09 11:29:51 -08:00
Andrew Waterman
11c8857b5d Don't re-read I$ RAMs on stall 2017-03-09 11:29:51 -08:00
Andrew Waterman
db0a02b78e WIP on priv-1.10 2017-03-09 11:29:51 -08:00
Wesley W. Terpstra
43dea38ee9 dcache: we need the bits within the beat so select the right word (#575) 
We now have confirmation that it fixed the problem.
 2017-03-08 00:19:09 -08:00
Andrew Waterman
603b8af2eb Don't canonicalize 32-bit FP results in the various pipelines 
It's redundant with the new scheme, so just adds HW for no reason.
 2017-03-07 20:51:32 -08:00
Andrew Waterman
f505aba1ac Use sNaN value for flw, like other single-precision ops 2017-03-07 20:51:32 -08:00
Andrew Waterman
cc389bea90 Fix in-register representation of fdiv.s/fsqrt.s result 
We were zero-extending it, which is a double-precision zero in the recoded
format.  So, when spilled and reloaded with fsd/fld, the original value
was destroyed.  Instead, set the MSBs so that it represents sNaN.  When
spilled, the single-precision number will be preserved as the NaN payload.
 2017-03-07 20:51:32 -08:00
Henry Cook
d0ae087587 rocket: allow scratchpad address to be configurable (#570) 2017-03-06 21:35:45 -08:00
Henry Cook
229fb2251d coreplex: hack to fix tile dedup (#569) 2017-03-06 16:36:03 -08:00
Wesley W. Terpstra
676974281a rocket: describe dcache scratchpad as memory 2017-03-03 02:54:48 -08:00
Wesley W. Terpstra
1eeaa390c6 diplomacy: output JSON formatted version of DTS 2017-03-03 02:45:11 -08:00
Wesley W. Terpstra
0178248551 diplomacy: evaluate ResourceBindings only once 2017-03-03 02:04:17 -08:00
Wesley W. Terpstra
8e4f348dda rocket: if no MMU, don't print it in DTS 2017-03-03 00:48:26 -08:00
Wesley W. Terpstra
7660be039c rocketchip: add WithTimebase to set RTC frequency 2017-03-03 00:47:50 -08:00
Wesley W. Terpstra
57a329408c PeripheryExtInterrupts: elide node if NExtTopInterrupts = 0 2017-03-03 00:28:55 -08:00
Wesley W. Terpstra
4535de2669 rocket: use diplomatic interrupts 
This makes it possible for the PLIC to work with heterogenous cores.
 2017-03-02 21:19:23 -08:00
Wesley W. Terpstra
d3c5318714 build: remove the now obsolete config string 2017-03-02 21:19:23 -08:00
Wesley W. Terpstra
93ca555c20 IntXing: support configurable sync depth 2017-03-02 21:19:23 -08:00
Wesley W. Terpstra
637bc6c3a7 coreplex: pretty print discontiguous ranges properly 2017-03-02 21:19:23 -08:00
Wesley W. Terpstra
7ff9f88ad7 rocket: connect interrupt map for Plic+Clint 2017-03-02 21:19:22 -08:00
Wesley W. Terpstra
38489ad9b0 tilelink2: bring IntNode parameters up to the current standard 2017-03-02 21:19:22 -08:00
Wesley W. Terpstra
5bd9f18e5b rocket: add dts cpu description 2017-03-02 21:19:22 -08:00
Wesley W. Terpstra
cfd367248f rocketchip: add blind ports to DTS 2017-03-02 21:19:22 -08:00
Wesley W. Terpstra
9a5e2e038b uncore: add DTS meta-data for devices 2017-03-02 21:19:22 -08:00
Wesley W. Terpstra
0b950b5938 coreplex: bind assigned resources 2017-03-02 21:19:19 -08:00
Wesley W. Terpstra
7f6a250dbf tilelink2: add hooks for Resources 2017-03-02 21:19:19 -08:00
Wesley W. Terpstra
e322692d16 diplomacy: add DeviceTree renderer 2017-03-02 21:19:14 -08:00
Wesley W. Terpstra
c01a74f4a0 diplomacy: add AddressRange conversion to/from AddressSet 2017-03-02 11:14:28 -08:00
Wesley W. Terpstra
bb70b1a3c3 diplomacy: add resource tracking 2017-03-02 11:14:28 -08:00
Henry Cook
9bfcb40cb4 util: Majority on sets of bools 2017-02-27 20:18:28 -08:00
Henry Cook
6958f05a85 Merge remote-tracking branch 'origin/master' into periphery-adjustments 2017-02-27 19:40:55 -08:00
Henry Cook
62f5727bc6 periphery: peripheryBusBytes and socBusBytes 2017-02-27 19:19:41 -08:00
Andrew Waterman
dfa61bc487 Standardize Data.holdUnless and SeqMem.readAndHold 
- Make API more idiomatic (x holdUnless y, instead of holdUnless(x, y))
- Add new SeqMem API, readAndHold, which corresponds to most common
  use of holdUnless
 2017-02-25 03:07:49 -08:00
Wesley W. Terpstra
fd972f5c67 icache: back-pressure is unnecessary (#564) 
* icache: back-pressure is unnecessary
* icache: require that the response arrives after the request
 2017-02-24 21:01:56 -08:00
Henry Cook
35877e6ec1 Merge branch 'master' into periphery-adjustments 2017-02-24 10:37:41 -08:00
Leway Colin
87d909e996 Fix HastiTestSRAM can't R/W byte when HSIZE is 0 (#563) 2017-02-24 10:37:26 -08:00
Henry Cook
a281ad8ad2 rocketchip: rename some periphery ports 2017-02-23 18:28:04 -08:00
Henry Cook
6c3011d513 periphery: make external interrupts a UInt rather than a Vec[Bool] 2017-02-23 18:27:44 -08:00
Wesley W. Terpstra
c01aec9259 tilelink2: support unused IntXing 2017-02-22 18:41:06 -08:00
Wesley W. Terpstra
735e4f8ed6 diplomacy: use HeterogeneousBag instead of Vec 
This makes it possible for the bundles to have different widths.

Previously, we had to widen all the bundles passing through a node
to the widest of all the possibilities.  This would mean that if
you had two source[] fields, they end up the same.
 2017-02-22 17:05:22 -08:00
Henry Cook
027d6247b6 diplomacy: silence a warning (#560) 2017-02-22 11:28:04 -08:00
Wesley W. Terpstra
9153a9a733 ClockDivider: add docs to appease the reviewer 
... even though this means a delay of 1:30 hours :(
 2017-02-17 19:35:08 +01:00
Wesley W. Terpstra
3931b0faff coreplex: assume L1 runs no slower than L2 2017-02-17 15:15:41 +01:00