riscv/rocket-chip
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Author SHA1 Message Date
Andrew Waterman
51e0870e23 Separate I$ and D$ interface signals that span clock cycles 
For example, Decopuled[HellaCacheReq].bits.kill doesn't make sense,
since it doesn't come the same cycle as ready/valid.
 2016-04-01 19:30:39 -07:00
Andrew Waterman
dc662f28a0 Specify width on s1_pc to avoid width inference problem 2016-04-01 17:28:42 -07:00
Andrew Waterman
72f7f71eb5 No need to allow finishes to be sent in s_refill_resp state 
This is a hold-over from when writebacks needed finish messages.
 2016-04-01 16:19:57 -07:00
Henry Cook
78bc18736e LRSC startvation fix: HellaCache generates its own Finish messages again. 2016-04-01 16:04:25 -07:00
Andrew Waterman
37b9051762 No need to validate npc if BTB is disabled 2016-04-01 15:54:57 -07:00
Andrew Waterman
4480d1e817 Don't compile BTB when nEntries=0 2016-04-01 15:14:45 -07:00
Andrew Waterman
d406dc1231 Remove vestigial BTB enable option 2016-04-01 15:14:34 -07:00
Henry Cook
54dd82ff76 bugfix for WB data buffer 2016-03-31 17:53:49 -07:00
Christopher Celio
1792d01ce1 fix leaky assert in nbdcache 
Squash of #33.
 2016-03-31 15:56:14 -07:00
Andrew Waterman
adb7eacf6e Fix Chisel3 build for XLen=32 2016-03-30 22:48:51 -07:00
Andrew Waterman
70664bbca0 Fix Chisel3 build for UseVM=false 2016-03-30 22:48:31 -07:00
Andrew Waterman
8ad8e8a691 Add partial Sv48/Sv57 support 
Right now, we don't support Sv39 and Sv48 at the same time, which needs
to change.
 2016-03-30 11:02:22 -07:00
Andrew Waterman
e652821962 Use correct kind of TileLink arbiter 
It was "correct" before, but broke Chisel3 build.
 2016-03-28 22:53:47 -07:00
Andrew Waterman
5ce3527b88 Merge pull request #32 from ucb-bar/pr-btb-masking 
separate btb response mask from the frontend mask
 2016-03-26 18:15:14 -07:00
Christopher Celio
f526d380fd separate btb response mask from the frontend mask 
It is now the job of the pipeline to monitor the frontend's valid mask (of
instructions) and the BTB's suggested valid mask (based on the prediction it
makes). Some processors may want to ignore or override the BTB's prediction and
thus can supply their own instruction mask.
 2016-03-26 05:37:26 -07:00
Andrew Waterman
ed280fb3de Remove empty when statement (???) 2016-03-25 15:52:18 -07:00
Andrew Waterman
1ae6d09751 Slightly ameliorate D$->I$ critical path via scoreboard 2016-03-25 15:29:32 -07:00
Andrew Waterman
a4685a073f Don't instantiate PTW when UseVM=false 2016-03-25 14:17:25 -07:00
Andrew Waterman
27b3cca046 Discover D$, PTW port counts dynamically 
This is a generator, after all...
 2016-03-25 14:16:56 -07:00
Andrew Waterman
8d1ba4d1ec Remove hard-coded XLEN values from D$ 2016-03-24 14:52:12 -07:00
Andrew Waterman
7ae44d4905 Add RV32 support 2016-03-10 17:32:00 -08:00
Andrew Waterman
82c595d11a Fix no-FPU elaboration of CSR file 2016-03-10 17:30:56 -08:00
Andrew Waterman
bc15e8649e WIP on priv spec v1.9 2016-03-02 23:29:58 -08:00
Andrew Waterman
091782ad27 Merge pull request #29 from ucb-bar/rocc-ptw-refactoring 
RoCC PTW refactoring
 2016-02-25 17:57:22 -08:00
Yunsup Lee
15ac4d317f RoCC PTW refactoring 2016-02-25 17:15:38 -08:00
Christopher Celio
b96343a4e5 [btb] fix mix type error for fetch-width > 1 
closes #24
 2016-02-08 17:41:38 -08:00
Christopher Celio
31dd311aff [fpu] fix rounding mode bug in fdivfsqrt 2016-02-08 17:38:31 -08:00
Howard Mao
5abfd1a4ab make sure to check for region violations in DMA frontend 2016-02-03 15:40:44 -08:00
Howard Mao
78579672d3 make mtvec configurable and writeable 2016-01-29 14:51:56 -08:00
Howard Mao
7937fbf074 fix number of IOMSHRs at 1 2016-01-29 14:51:56 -08:00
Howard Mao
305185c034 send DMA requests through MMIO and get responses through CSRs 2016-01-29 14:51:56 -08:00
Andrew Waterman
58fcc6b7c6 Get rid of useless mux 2016-01-28 11:44:59 -08:00
Howard Mao
d170fcd913 DecoupledHelper is now imported from junctions 2016-01-21 15:38:43 -08:00
Andrew Waterman
52d6b0b1a5 Improve ALU QoR 
Rejigger muxes; share XOR gates between ADD/SUB, XOR, and BEQ.
 2016-01-20 17:42:31 -08:00
Howard Mao
77e068c153 fix Chisel3 compat issue in SimpleHellaCacheIF 2016-01-14 22:42:44 -08:00
Howard Mao
120361226d fix more Chisel3 deprecations 2016-01-14 14:46:31 -08:00
Howard Mao
d51c127646 fix deprecation warnings in rocket.scala 2016-01-13 22:08:06 -08:00
Andrew Waterman
ae98af7077 don't mix SInt/UInt 2016-01-12 16:27:36 -08:00
Andrew Waterman
00d17abd78 Don't ignore data value when writing MIPI 2016-01-12 16:23:06 -08:00
Andrew Waterman
7bf503a275 Remove four integer/FP converters 2016-01-12 16:06:23 -08:00
Andrew Waterman
31d537c405 Add missing cloneType 2016-01-12 15:45:11 -08:00
Howard Mao
13ce91e453 fix Chisel3 compat warnings in ICache and FPU 2016-01-12 12:43:48 -08:00
Howard Mao
05b359d357 support streaming DMA in DMA frontend 2016-01-06 18:17:41 -08:00
Howard Mao
dbe68056d9 Merge pull request #21 from ucb-bar/dma 
Implement client-side DMA controller
 2015-12-22 10:33:28 -05:00
Howard Mao
304d8b814a Implement client-side DMA controller 2015-12-16 21:24:24 -08:00
Albert Magyar
01a3447989 Remove duplicate PseudoLRU class from rocket TLB 2015-12-16 16:12:47 -08:00
Howard Mao
7690de07e1 allow icache to configure which side of the way mux gets buffered 2015-12-02 17:17:49 -08:00
Howard Mao
369ee74a2c change names of RoCC tilelink interfaces to be more sensible 2015-12-02 16:28:23 -08:00
Howard Mao
f67b02fadb Merge branch 'rocc-fpu-port' 2015-12-02 08:52:15 -08:00
Howard Mao
73b0263663 disconnect fpu port if no fpu-using RoCC accelerators 2015-12-01 20:41:58 -08:00