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Commit Graph

470 Commits

Author SHA1 Message Date
Andrew Waterman
656aa78f7d Pipeline FMAs more deeply by default
Rocket's QoR has improved enough that the FMAs are on the critical
path.  This change seems to keep the integer pipeline's logic
paths balanced with the FPU.
2016-09-09 11:06:42 -07:00
Andrew Waterman
eaa4b04ee5 Check D$ store->load collisions more precisely
Tolerate, for example, a half-word store and a half-word load to
different halves of the same word.
2016-09-09 11:06:42 -07:00
Andrew Waterman
a7f47f3c23 Reduce default BTB size
The old value 62 seems to have been a typo introduced over 2 years ago
in commit 63bd0b9d2a.  The intent was to
fit the dhrystone working set (rofl) which the new value of 40 does.
2016-09-07 01:51:27 -07:00
Andrew Waterman
9fea4c83da Add RV32F support 2016-09-07 00:05:39 -07:00
Andrew Waterman
66e9f027e0 Add MuxT to mux on Tuple2 and Tuple3 2016-09-07 00:05:38 -07:00
Andrew Waterman
511cc6c5c5 Evaluate arg to Boolean.option lazily 2016-09-07 00:05:38 -07:00
Andrew Waterman
a0dcd42e80 avoid erroneously setting tags valid during flush 2016-09-07 00:05:38 -07:00
Andrew Waterman
63679bb019 Add support for L1 data scratchpads instead of caches
They fit in the same part of the address space as DRAM would be, and
are coherent (because they are not cacheable).

They are currently limited to single cores without DRAM.  We intend
to lift both restrictions, probably when we add support for
heterogeneous tiles.
2016-09-02 16:22:07 -07:00
Andrew Waterman
c05ba1e864 Add TileId parameter, generalizing GroundTestId
This usually shouldn't be used in Tiles that are meant to be P&R'd once
and multiply instantiated, as their RTL would no longer be homogeneous.
However, it is useful for conditionalizing RTL generation for
heterogeneous tiles.
2016-09-02 00:10:50 -07:00
Howard Mao
c66318307c no longer need to set invalidate_lr in RoCC examples 2016-08-31 22:05:35 -07:00
Howard Mao
27c674972c tie off invalidate_lr in RoCC 2016-08-31 22:00:27 -07:00
Howard Mao
bb578494d8 don't override req.bits.phys in SimpleHellaCacheIF 2016-08-31 22:00:27 -07:00
Howard Mao
403cc1c5c4 fix DecoupledTLB to handle misses appropriately 2016-08-31 22:00:27 -07:00
Andrew Waterman
f4524e4c91 Add PML for Boolean.option; use it 2016-08-31 13:43:04 -07:00
Andrew Waterman
07d48df88a Get rid of FPU RoCC port logic when RoCC not present
The previous approach used ex_reg_valid to determine whether to
source data from the FPU or RoCC.  Thus, when the RoCC was not
present, it was still creating muxes.  Using ex_cp_valid instead
gets rid of them.
2016-08-29 12:59:17 -07:00
Andrew Waterman
f91552a650 Add performance counter support 2016-08-29 12:31:52 -07:00
Andrew Waterman
1e3339e97c Update breakpoints to match @timsifive's debug spec 2016-08-29 12:31:52 -07:00
Andrew Waterman
33eaf08b60 set missing port direction
Ideally, chisel should flag this as an error.
2016-08-29 12:31:52 -07:00
Ben Keller
79293f4fa2 Use a better iterator inside the DCache 2016-08-25 20:41:39 -07:00
Howard Mao
7b20609d4d reorganize moving non-submodule packages into src/main/scala 2016-08-19 13:45:23 -07:00