riscv/rocket-chip
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725 Commits

Author SHA1 Message Date
Andrew Waterman
53f726008b Use Mem instead of Vec[Reg] for TLB 
QoR-neutral, improves simulation speed
 2013-11-24 14:21:02 -08:00
Yunsup Lee
d450b85483 Merge branch 'master', remote-tracking branch 'origin' into hwacha 2013-11-21 14:57:38 -08:00
Yunsup Lee
68e270eeb2 fix slli/slliw encoding bug 2013-11-21 14:44:58 -08:00
Quan Nguyen
3b109763ad Connect FMA to Hwacha pipes 2013-11-19 20:54:47 -08:00
Stephen Twigg
a662e85f2a Merge branch 'master' into hwacha 2013-11-14 16:02:44 -08:00
Yunsup Lee
c1966e2b0a forgot to put htif into uncore package 2013-11-07 15:42:03 -08:00
Yunsup Lee
da033af0b0 move htif to uncore 2013-11-07 13:18:46 -08:00
Yunsup Lee
4c56323f6f hookup all memory ports 2013-11-05 17:12:09 -08:00
Stephen Twigg
eae571e371 Remove rocc memory simplifye module (Hwacha has its own) 2013-11-05 15:31:03 -08:00
Andrew Waterman
12f0369e6e Simplify divide early out circuitry 2013-10-29 13:20:40 -07:00
Andrew Waterman
b44dafbdca Simplify branch offset mux 2013-10-29 13:20:40 -07:00
Andrew Waterman
23f7bab4f3 Reduce FMA pipeline depths 
FMA QoR has improved enough to allow this change.
 2013-10-29 13:20:40 -07:00
Yunsup Lee
1583560757 fix replay bug, don't respond when cmd is a NOP 2013-10-28 22:35:18 -07:00
Stephen Twigg
36b85b8ee2 Fix issue where the MSB of D$ req tag was getting lost for all agents when an accelerator was attached. 2013-09-25 11:51:10 -07:00
Stephen Twigg
891e459625 Export stats pcr register (#28 currently) to the top-level 2013-09-25 01:16:32 -07:00
Stephen Twigg
730a6ec76b AccumulatorExample now properly sets its busy bit. Also, pepper some helpful comments into AccumulatorExample 2013-09-24 16:32:49 -07:00
Andrew Waterman
81c752de84 Support disabling virtual memory 2013-09-24 13:58:47 -07:00
Andrew Waterman
adc386f889 Turn off virtual memory inside RoCC base class 2013-09-24 13:58:47 -07:00
Stephen Twigg
3532ae0b79 From Andrew, actually mark scoreboard when rocc instruction with a writeback is issued. Also, fix an issue with AccumulatorExample not properly tagging its memory requests. Finally, reverted changes from f27429c to more properly follow the spike model (always return previous value of accumulator). 2013-09-24 10:54:09 -07:00
Stephen Twigg
db1e09f0d0 Fix issues with RoCC AccumulatorExample stalls on memory interface 2013-09-23 00:21:43 -07:00
Stephen Twigg
158cee08af Adjust ordering of RoCCInstruction to reflect new ISA encoding. (Note: Fixes register op issues with AccumulatorExample but still slight issue with executing memory loads) 2013-09-22 03:18:06 -07:00
Andrew Waterman
1d2f4f8437 New ISA encoding, AUIPC semantics 2013-09-21 06:32:40 -07:00
Andrew Waterman
25ab402932 swap JAL, JALR encodings 2013-09-15 04:29:06 -07:00
Andrew Waterman
110e53cb48 Revert "Add early out to multiplier" 
This broke recently and I don't have time to figure out why.
 2013-09-15 04:15:32 -07:00
Andrew Waterman
88d1c47665 don't disassemble within chisel 2013-09-15 04:14:45 -07:00
Andrew Waterman
f12bbc1e43 working RoCC AccumulatorExample 2013-09-14 22:34:53 -07:00
Andrew Waterman
18968dfbc7 Move store data generation into cache 2013-09-14 16:15:07 -07:00
Andrew Waterman
a0cb711451 Start adding RoCC 2013-09-14 15:31:50 -07:00
Andrew Waterman
d053bdc89f Remove Hwacha from Rocket 
Soon it will use the coprocessor interface.
 2013-09-12 22:34:38 -07:00
Andrew Waterman
1edb1e2a0a Ignore LSB of PC 2013-09-12 17:55:58 -07:00
Andrew Waterman
59f5358435 Implement AQ/RL; move fence logic out of cache 2013-09-12 16:07:30 -07:00
Andrew Waterman
243c4ae342 sync up rocket with new isa 2013-09-12 03:44:38 -07:00
Andrew Waterman
95dd0d8be1 Remove DebugIO/error mode 2013-09-11 20:15:21 -07:00
Henry Cook
f9b85d8158 NetworkIOs no longer use thunks 2013-09-10 16:15:19 -07:00
Henry Cook
d06e24ac24 new enum syntax 2013-09-10 10:51:35 -07:00
Stephen Twigg
cfbfa6b895 Add errors due to merge issues. Note, DebugIO re-introduced here but slated for possible removal in later commits. 2013-09-05 19:22:34 -07:00
Stephen Twigg
d896ccbd43 Merge branch 'master' into chisel-v2 
Conflicts:
	src/main/scala/htif.scala
 2013-09-05 16:11:53 -07:00
Andrew Waterman
b9f6e1a7ec Don't update BTB when garbage was fetched 2013-08-26 14:53:04 -07:00
Yunsup Lee
44e92edf92 fix scr parameterization bug 2013-08-24 22:42:51 -07:00
Andrew Waterman
3895b75a56 Support non-power-of-2 BTBs; prefer invalid entries 2013-08-24 17:33:11 -07:00
Yunsup Lee
2ca5127785 parameterize number of SCRs 2013-08-24 15:47:14 -07:00
Andrew Waterman
daf23b8f79 Add early out to multiplier 2013-08-24 14:44:23 -07:00
Andrew Waterman
67f80ba4b2 Stall div/mul writeback until WB slot is free 2013-08-24 14:44:17 -07:00
Andrew Waterman
d1b5076fee Don't update BTB when garbage was fetched 2013-08-24 14:44:11 -07:00
Andrew Waterman
52e31f3298 Bypass scoreboard updates 
This reduces div/mul/D$ miss latency by 1 cycle.
 2013-08-24 14:44:04 -07:00
Andrew Waterman
d4a0db4575 Reflect ISA changes 2013-08-24 14:43:55 -07:00
Henry Cook
ff7b486006 standardized sbt build 2013-08-15 18:13:19 -07:00
Henry Cook
ae02ebd153 Merge branch 'chisel-v2' of github.com:ucb-bar/riscv-rocket into chisel-v2 
Conflicts:
	src/core.scala
	src/ctrl.scala
	src/dpath_util.scala
	src/fpu.scala
	src/nbdcache.scala
	src/tile.scala
 2013-08-15 16:35:27 -07:00
Henry Cook
3a266cbbfa final Reg changes 2013-08-15 15:28:15 -07:00
Henry Cook
b570435847 Reg standardization 2013-08-13 17:50:02 -07:00
Henry Cook
858169917e removed dummy DNCs handled by pruning 2013-08-12 22:34:46 -07:00
Henry Cook
d9b3c7cfc8 Moved RenEn to ChiselUtil 2013-08-12 22:18:25 -07:00
Huy Vo
387cf0ebe0 reset -> resetVal, getReset -> reset 2013-08-12 20:51:54 -07:00
Henry Cook
1a9e43aa11 initial attempt at upgrade 2013-08-12 10:39:11 -07:00
Henry Cook
de313d97de Merge branch 'master' of github.com:ucb-bar/riscv-rocket 2013-08-02 16:30:09 -07:00
Henry Cook
4eaab214d2 Fold uncore constants into TileLinkConfiguration, update coherence API 2013-08-02 16:29:51 -07:00
Henry Cook
bef6c1db35 minor nbdcache cleanup 2013-08-02 16:29:37 -07:00
Stephen Twigg
3132db4f90 Add stats PCR (cr28) to be used to flag whether a core is doing 'interesting' activity. 2013-07-30 16:36:28 -07:00
Henry Cook
9abdf4e154 Make compatible with scala 2.10. List.sort deprecated. Refactor constants into package object. 2013-07-23 20:27:58 -07:00
Henry Cook
5c00d0a030 new tilelink arbiter type 2013-07-09 15:31:46 -07:00
Andrew Waterman
7cc53c7725 clean up Str 2013-06-15 00:45:53 -07:00
Andrew Waterman
95c5147dc5 Add RISC-V instruction disassembler 2013-06-13 10:31:04 -07:00
Henry Cook
569d8fd796 Merge branch 'tilelink-data' 2013-05-23 14:14:40 -07:00
Henry Cook
12205b9684 remove obsolete config file reader prototype 2013-05-23 14:09:03 -07:00
Andrew Waterman
fe9adfe71b Simplify and correct integer multiplier 2013-05-22 17:27:50 -07:00
Yunsup Lee
11133d6d4c clock gate s2 registers in the frontend 2013-05-21 18:59:21 -07:00
Yunsup Lee
c837c1d800 fix bug in previous JALR commit 
on commit tag 9a122c06d1bf11237d7fb0769d454a67bbb7400e
 2013-05-21 18:28:44 -07:00
Henry Cook
69b508ff39 ported caches and htif to use new tilelink 2013-05-21 17:21:04 -07:00
Andrew Waterman
28f914c3f2 don't JALR to speculatively-bypassed addresses 
Technically not necessary, but probably improves performance.
 2013-05-21 16:56:58 -07:00
Yunsup Lee
dcde377303 Fix DM I$ deadlock 
BTB predictions were causing infinite miss loops
 2013-05-20 15:22:58 -07:00
Andrew Waterman
3a1b5f01b2 don't take interrupts while they're disabled! 
a control bug allowed an interrupt to be taken on the instruction immediately
following an interrupt-disabling instruction (but not thereafter).
 2013-05-19 23:27:47 -07:00
Andrew Waterman
6eb4c2542a comment out I$ assert for now 2013-05-18 18:09:23 -07:00
Andrew Waterman
1dab984231 use UFix instead of Bits for arithmetic 2013-05-18 00:45:29 -07:00
Andrew Waterman
dfa7a03f73 use assert, not Assert 2013-05-18 00:45:13 -07:00
Andrew Waterman
d405ffa949 assume all I$ grants bear data 2013-05-01 21:01:20 -07:00
Andrew Waterman
474d321cc7 fix meta hazard counter to reset on new meta writes 2013-05-01 16:35:24 -07:00
Andrew Waterman
a6a88fce19 Revert "broaden scope of s1_nack to include new probes accepted by the probe unit on that cycle" 
This reverts commit b41e6bc50519631ba097ac1196737be7107295f9.
 2013-05-01 16:34:45 -07:00
Andrew Waterman
63a38e7982 Revert "temp" 
This reverts commit 73705e6ed8f98d08ce6b30fbe760de694c6563ae.
 2013-05-01 16:34:33 -07:00
Henry Cook
b6945408cb temp 2013-05-01 10:24:36 -07:00
Henry Cook
722bc917d3 broaden scope of s1_nack to include new probes accepted by the probe unit on that cycle 2013-05-01 10:05:54 -07:00
Andrew Waterman
1501e90c1f interlock probe unit on tag RAW hazards 2013-04-30 00:38:22 -07:00
Henry Cook
e8b20f3d38 clear meta state of silently-dropped, clean evictee, so as to prevent a write race on meta array between probes on evictee and refill grant 2013-04-25 17:41:04 -07:00
Andrew Waterman
50ccc20bf3 replace RDNPC with AUIPC 2013-04-22 04:20:15 -07:00
Henry Cook
db5a060c7d fix io dir 2013-04-10 13:47:30 -07:00
Andrew Waterman
ae7720e284 guarantee LR/SC forward progress 
the mechanism is to block new probes for several cycles after a successful LR.

this also cleans up the MSHR <-> ProbeUnit interface slightly.
 2013-04-07 19:27:21 -07:00
Andrew Waterman
e74e032c87 simplify MSHR memory response logic 2013-04-06 01:03:37 -07:00
Andrew Waterman
1abb9277db fix LR/SC atomicity violation 
note, it's still not starvation-free.
 2013-04-05 19:13:38 -07:00
Andrew Waterman
8cbdeb2abf add LR/SC support 2013-04-04 17:07:09 -07:00
Andrew Waterman
fc46daecf6 don't flush pipeline on writes to side-effect-free PCRs 
notably, K0, K1, and EPC
 2013-04-04 17:07:09 -07:00
Andrew Waterman
8b439ef20d only support setpcr/clearpcr of SR 
the full PCR RMW support was wasted area/power
 2013-04-04 17:07:08 -07:00
Andrew Waterman
d43f484feb take interrupts on nonzero fromhost values 2013-04-04 17:07:08 -07:00
Andrew Waterman
d4a3351cfc expose pending interrupts in status register 2013-04-04 17:07:08 -07:00
Henry Cook
f8aebcbf8c fix for cache controller bug: failing to mux correct metadata into mshr.io.old_meta on tag match 2013-04-04 15:50:29 -07:00
Henry Cook
16113a96ba fixes after merge 2013-03-25 19:09:08 -07:00
Henry Cook
95f0a688e9 Merge branch 'release-xacts' 
Conflicts:
	src/htif.scala
	src/icache.scala
	src/nbdcache.scala
	src/tile.scala
 2013-03-20 17:37:50 -07:00
Henry Cook
273bd34091 Generalized mem arbiter, moved to uncore. Support for multiple banks when acking grants. 2013-03-20 15:53:36 -07:00
Henry Cook
6d2541aced nTiles -> nClients in LogicalNetworkConfig 2013-03-20 14:12:36 -07:00
Andrew Waterman
ea9d0b771e remove aborts; simplify probes 2013-03-19 15:29:40 -07:00
Yunsup Lee
0f50970913 move HellaQueue to uncore 2013-03-19 00:43:20 -07:00
Henry Cook
e0361840bd writebacks on release network pass asm tests and bmarks 2013-02-28 18:11:40 -08:00