riscv/rocket-chip
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1053 Commits

Author SHA1 Message Date
Andrew Waterman
fd5f419eb1 use getWidth instead of width 2014-05-09 19:30:57 -07:00
Andrew Waterman
0c13c00d08 Reduce node count by avoiding elsewhen :-( 2014-05-09 19:30:57 -07:00
Andrew Waterman
8dcc0cbb53 Fix bug with multiple DecodeLogics per module 2014-05-09 19:30:57 -07:00
Henry Cook
5bc6981414 fix metadata default, add bug TODO 2014-05-06 18:36:22 -07:00
Henry Cook
7d6a642c0c correct use of function value to initialize MetaDataArray 2014-05-06 13:00:00 -07:00
Henry Cook
7f690dd9c8 parameterize metadataarray 2014-05-01 01:45:45 -07:00
Henry Cook
519b2ea2b6 New metadata result trait 2014-04-26 19:08:56 -07:00
Henry Cook
1b156c6db9 TileLinkIO.GrantAck -> TileLinkIO.Finish 2014-04-26 15:18:21 -07:00
Henry Cook
fc825c7103 MetaData & friends moved to uncore/ 2014-04-23 16:23:51 -07:00
Henry Cook
f4d326b8d7 Prep in HellaCache for extracting MetaData to uncore 2014-04-23 15:43:31 -07:00
Henry Cook
5c62cff2ce put replacement policy in uncore and minor nbdcache cleanups 2014-04-22 16:53:20 -07:00
Andrew Waterman
09e2ec1f9e Fix sign of remainder when dividing by zero 
h/t chris
 2014-04-18 16:32:57 -07:00
Henry Cook
1fa505f9ff remove superfluous AVec object 2014-04-16 17:19:32 -07:00
Andrew Waterman
3520620fbd Remove D$ -> BTB path 2014-04-15 23:05:02 -07:00
Andrew Waterman
de492b3cf7 Fix critical path through integer scoreboard 2014-04-15 21:28:13 -07:00
Henry Cook
444d0449e3 io.cnt bug in serializer 2014-04-14 17:13:13 -07:00
Henry Cook
1da8ef2ddf Added serdes to decouple cache row size from tilelink data size 2014-04-10 12:34:12 -07:00
Henry Cook
910b3b203a removed AddressSpaceConstants, CacheConstants, and TileLinkSizeConstants 2014-04-10 12:32:44 -07:00
Henry Cook
ebdc0a2692 merge Aqcuire and AcquireData. cache line size coupled to tilelink data size 2014-04-10 12:09:52 -07:00
Stephen Twigg
e90f2484aa Sync with riscv-opcodes (csr register mapping) 2014-04-08 15:48:37 -07:00
Andrew Waterman
3ed8adf032 Add early out for MUL[W] (not MULH[[S]U]) 2014-04-07 23:48:02 -07:00
Andrew Waterman
927287da34 Bypass RAS push/pop 2014-04-07 23:47:53 -07:00
Andrew Waterman
f235fa0db6 Move branch resolution to M stage 2014-04-07 15:58:49 -07:00
Andrew Waterman
db59fc65ab Add return address stack 2014-04-01 15:01:27 -07:00
Andrew Waterman
e3b12e0b85 Make BTB more complexity-effective 
BTB entries reference a small number of unique pages, so we separate the
storage of pages from indices.  This makes much larger BTBs feasible.  It's
easy to exacerbate cycle time this way, so one-hot encoding is used as needed.
 2014-03-25 05:22:04 -07:00
Andrew Waterman
804b09c8c5 Frontend QoR tweaks 2014-03-25 05:20:24 -07:00
Andrew Waterman
6465e2df14 Make Int -> Bool conversions explicit 2014-03-24 04:36:53 -07:00
Andrew Waterman
1b030777ce Remove vestigial control signal 2014-03-24 04:36:12 -07:00
Andrew Waterman
5996418021 Fix exception behavior of fmin/fmax 2014-03-18 18:36:51 -07:00
Andrew Waterman
54cbf0c4f1 Add (unused) RV32 CSRs 2014-03-15 17:33:17 -07:00
Andrew Waterman
943d7ac80a Use LinkedHashSet/Map for simpler determinism 2014-03-15 17:31:48 -07:00
Donggyu Kim
53d62cb69d remove nondeterminism 2014-03-15 16:45:58 -07:00
Andrew Waterman
a0389645b7 New FP encoding; improved FP implementation 2014-03-11 18:58:24 -07:00
Andrew Waterman
00bc1a2293 Add fclass.{s|d} instructions 2014-03-10 16:59:24 -07:00
Yunsup Lee
ac4b3f9f22 print out core id 2014-03-04 23:38:49 -08:00
Andrew Waterman
9f2e16c58a Fix D$ arbiter for >2 inputs 2014-03-04 16:32:17 -08:00
Andrew Waterman
fa75f6e81e Fix null pointer exception when HAS_FPU=false 2014-03-04 16:32:09 -08:00
Andrew Waterman
c7110c8389 Make FPU pipeline depths configurable 2014-02-28 13:39:59 -08:00
Yunsup Lee
98b830201a add wen signal to dasm printf 2014-02-25 03:31:06 -08:00
Yunsup Lee
97b1841fcf change dcache tag bits to 7 2014-02-22 22:53:04 -08:00
Andrew Waterman
8e3ca609f7 Renumber uarch CSRs into custom CSR space 2014-02-14 17:40:00 -08:00
Andrew Waterman
a09ff9fdc7 Revert to old AUIPC definition 2014-02-10 19:04:42 -08:00
Andrew Waterman
1456170c6d Always stall decode on RoCC -> FENCE; never stall on RoCC -> deferred AMO.RL fence 2014-02-06 12:01:49 -08:00
Andrew Waterman
eca8c99f44 Ignore rocc interrupt line when no rocc is present 2014-02-06 03:06:55 -08:00
Andrew Waterman
e7a726fbac Make uarch counters read-only 2014-02-06 01:48:56 -08:00
Quan Nguyen
f021213b1d Merge remote-tracking branch 'origin/master' into hwacha-port 2014-02-06 00:21:28 -08:00
Andrew Waterman
62e9313aef Add 16 microarchitectural counters 2014-02-06 00:13:02 -08:00
Yunsup Lee
ff7cae29f7 hookup rocc interrupt and s bit 2014-02-06 00:09:42 -08:00
Yunsup Lee
ab4a3e937b don't share fma pipes 2014-02-05 14:21:43 -08:00
Stephen Twigg
6a02d15c21 Merge branch 'master' into hwacha-port 2014-02-04 17:05:03 -08:00
Henry Cook
2c2b3a7678 cleanups supporting uncore hierarchy 2014-01-31 12:07:26 -08:00
Andrew Waterman
febd26f505 Correct CSR privilege logic 2014-01-31 01:03:17 -08:00
Stephen Twigg
3c3c469725 Add exception signal to rocc interface 2014-01-28 22:13:16 -08:00
Andrew Waterman
0266c1f76a Support retirement width > 1 in CSR file 2014-01-24 16:37:40 -08:00
Andrew Waterman
267394d3cc Fix CSR interlocks 2014-01-24 16:37:40 -08:00
Andrew Waterman
1f986d1c96 Branches don't care about the ALU input/function 2014-01-24 16:37:40 -08:00
Andrew Waterman
a1b7774f5d Simplify handling of CAUSE register 2014-01-24 16:37:39 -08:00
Christopher Celio
a2be21361e Allow ICacheConfig to toggle fetch-width. 2014-01-22 16:19:57 -08:00
Andrew Waterman
a7489920ce Support CSR atomics on all CSRs, not just STATUS 2014-01-21 16:17:39 -08:00
Andrew Waterman
6ba2c1abe5 Use auto-generated CAUSE constants 2014-01-21 15:01:54 -08:00
Andrew Waterman
95de358a96 More of the same FPU fix 
some SP ops followed by DP stores were not working because they
were encoded as subnormals, not NaNs.
 2014-01-17 14:09:30 -08:00
Andrew Waterman
cf38001e98 Fix fmv.s.x -> fsd 2014-01-17 03:52:35 -08:00
Yunsup Lee
30b894c2c4 Merge remote-tracking branch 'origin/master' into hwacha-port 2014-01-16 16:04:48 -08:00
Yunsup Lee
6bbbf36979 push accel/rocket dmem port back to rocket 2014-01-16 16:01:41 -08:00
Andrew Waterman
57f4d89c90 Generate D$ replay_next signals correctly 2014-01-16 00:16:09 -08:00
Andrew Waterman
6ebdc4d94e Simplify store conditional failure code generation 2014-01-16 00:15:48 -08:00
Andrew Waterman
31060ea8ae Fix fubar long-latency writeback control logic 
Load miss writebacks happening at the same time as multiplication
wasn't working.  Hopefully this does it.
 2014-01-14 04:02:43 -08:00
Andrew Waterman
e8486817e6 Clean up formatting (i.e. remove tabs, semicolons) 2014-01-13 21:43:56 -08:00
Andrew Waterman
a50a1f7d50 Clean up multiplier/divider stuff 2014-01-13 21:37:16 -08:00
Andrew Waterman
4d236979bd Fix very far forward JALs 
We were sign-extending from the wrong bit, causing a backwards jump.
 2014-01-13 00:55:48 -08:00
Andrew Waterman
c546f66404 Swap JAL/JALR encodings (again) 2014-01-13 00:54:49 -08:00
Quan Nguyen
ebec444ad2 Increase tag width for configurable precision in Hwacha 2013-12-13 03:33:02 -08:00
Andrew Waterman
07a91bb99a Miscellaneous cleanup 2013-12-09 19:53:14 -08:00
Andrew Waterman
da3135ac9b Begin integer unit clean-up 
...to make it easier to generate the superscalar version of the core.
 2013-12-09 15:06:13 -08:00
Andrew Waterman
16d5250924 Correct FP trap behavior on FCSR 2013-12-05 04:18:04 -08:00
Andrew Waterman
5814a90472 Make DecodeLogic interface more flexible 2013-12-05 04:16:48 -08:00
Andrew Waterman
924261e2b2 Update to new privileged ISA... phew 2013-11-25 04:35:15 -08:00
Andrew Waterman
65b8340cea Mitigate D$ hit -> branch -> NPC critical path 2013-11-24 14:21:03 -08:00
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
Andrew Waterman
35349d227f update to new Mem style 2013-02-20 16:09:46 -08:00
Andrew Waterman
9f89c812b7 fix HTIF memory size reporting 2013-01-29 23:08:25 -08:00
Yunsup Lee
a0bd0adeb2 change write/read port ordering for vlsi_mem_gen script 2013-01-29 21:32:42 -08:00
Andrew Waterman
66eb3720a4 fix SRAM semantics bug in HellaFlowQueue 2013-01-29 21:16:42 -08:00
Yunsup Lee
60bd3a6413 Revert "shuffled FPU control logic around to make functional unit retiming work better" 
This reverts commit 20dd308067b143adff4913fc7ac710a393ca1d86.
 2013-01-29 19:34:55 -08:00
Andrew Waterman
6275e009f8 fix HellaQueue deq.valid signal 2013-01-28 20:57:43 -08:00
Andrew Waterman
45d8066f45 add HellaQueue, an SRAM-based queue 2013-01-28 20:54:25 -08:00
Andrew Waterman
37c67f1d87 pipeline reset to the vector unit 2013-01-28 17:56:32 -08:00
Rimas Avizienis
f2df6147df shuffled FPU control logic around to make functional unit retiming work better 2013-01-28 17:17:09 -08:00
Henry Cook
f5729c9f25 removed ack_required field from grant messages 2013-01-28 16:44:17 -08:00
Henry Cook
8cbd316b5e Merge branch 'ready-sig-fix' into pin-cleanup 2013-01-27 23:04:58 -08:00
Henry Cook
931cffa749 ready signal fix 2013-01-27 23:04:35 -08:00
Henry Cook
83c207c852 pin cleanup in htif 2013-01-27 12:00:28 -08:00
Henry Cook
409b549d3c actually cleared up tile ios 2013-01-27 11:27:09 -08:00
Henry Cook
696dd102eb cleans up unconnected tile io pins (networking headers overwritten at top level) 2013-01-27 10:59:41 -08:00
Andrew Waterman
c890099e09 add System Control Register space to HTIF 2013-01-24 23:41:24 -08:00
Andrew Waterman
575bd3445a re-generalize scoreboard 2013-01-24 18:00:39 -08:00
Andrew Waterman
1fbc20450e don't allow simultaneous reads and writes to the tag ram 2013-01-24 17:55:00 -08:00
Andrew Waterman
37ee843b2c don't use reset combinationally 2013-01-24 17:55:00 -08:00
Andrew Waterman
bb6fbddf1f don't probe the mshr file to inquire about refills 2013-01-24 17:54:59 -08:00
Andrew Waterman
5b9f938263 correctly sign-extend badvaddr, epc, and ebase 2013-01-24 17:54:59 -08:00
Rimas Avizienis
63060bc0a8 minor tweaks for eos18 tapeout (SRAM r/w port ordering, etc) 2013-01-23 19:27:53 -08:00
Henry Cook
6b00e7ff74 New TileLink bundle names 2013-01-21 17:18:23 -08:00
Henry Cook
a2fa3fd04d Refactored packet headers/payloads 2013-01-15 15:50:37 -08:00
Henry Cook
e1225c5114 standardize IO naming convention 2013-01-07 13:41:36 -08:00
Henry Cook
261e14f831 Refactored uncore conf 2013-01-07 13:41:36 -08:00
Andrew Waterman
78868f6075 add config option to trade mul/div area for speed 2013-01-06 03:47:17 -08:00
Andrew Waterman
ce9f4881d2 remove broken multiplier early out 2013-01-06 03:47:00 -08:00
Andrew Waterman
05f19b21d0 merge multiplier and divider 2012-12-12 02:22:47 -08:00
Andrew Waterman
c921fc34a9 merge ALU left and right shifters 2012-12-12 02:22:34 -08:00
Andrew Waterman
f5c53ce35d add ecc support to d$ data rams 
i haven't injected errors yet; it may well be incorrect.
 2012-12-11 15:58:53 -08:00
Andrew Waterman
3f59e439ef fix d$ tag raw hazard 2012-12-07 15:14:20 -08:00
Andrew Waterman
e9752f1d72 pipeline host pcr access 2012-12-06 14:22:07 -08:00
Andrew Waterman
4dda38204f fix d$ reset bug 2012-12-06 03:13:22 -08:00
Andrew Waterman
290d3d226c fix AMO and store bypass bugs 
thanks, torture tester
 2012-12-06 02:07:52 -08:00
Andrew Waterman
4608660f6e torture revealed a couple bugs 
FP loads/stores with certain negative offsets could cause illegal rounding
mode traps, and x's were cropping up in situations that are benign in HW.
 2012-12-04 05:57:53 -08:00
Andrew Waterman
90cae54ac4 fix D$ read/write concurrency bug 2012-11-27 02:42:27 -08:00
Andrew Waterman
9c857b83f0 refactor PCR file 2012-11-27 01:28:06 -08:00
Andrew Waterman
64674d4d39 clean up PTW and support PADDR_BITS < VADDR_BITS 2012-11-26 20:38:45 -08:00
Andrew Waterman
608f65e716 don't wastefully read 2x the bits from D$ RAMs 2012-11-26 20:34:30 -08:00
Andrew Waterman
352bb464b5 clock gate X/M and M/W store data registers 2012-11-26 20:33:41 -08:00
Andrew Waterman
8a6ff5f9aa fix D$ writeback bug 
I swear I did this last week... perhaps I am finally losing it!
 2012-11-25 19:46:48 -08:00
Andrew Waterman
de2f28193a get rid of more global constants 2012-11-25 04:24:25 -08:00
Andrew Waterman
c036cdc1ea add option for 2-cycle load-use delay 2012-11-24 22:01:08 -08:00
Andrew Waterman
b514c7b725 clean up I$ parity code 2012-11-24 22:00:43 -08:00
Andrew Waterman
55082e45c4 add AVec, which automatically infers element type 
should consider modifying Vec as such
 2012-11-24 18:19:28 -08:00
Andrew Waterman
2b26082132 use 1r1w ram for tags; merge tags & permissions 
setting the dirty bit now allocates an MSHR (to reuse the existing datapath)
 2012-11-20 04:09:26 -08:00
Andrew Waterman
72f94d1141 fix virtual address sign extension detection 2012-11-20 04:06:57 -08:00
Andrew Waterman
30038bda8a bypass stores to subsequent loads 
since we handle subword stores as RMW operations, this occurs frequently
 2012-11-20 01:33:32 -08:00
Yunsup Lee
395e4e3dd6 andrew'x fix for D$ corner case in writeback->abort->probe 2012-11-18 03:11:06 -08:00
Yunsup Lee
06eeb90e2a vector unit interfaces to the new D$ 2012-11-17 20:07:41 -08:00
Yunsup Lee
81d711e892 fix D$ bug; now D$ doesn't respond to prefetches 2012-11-17 20:06:13 -08:00
Andrew Waterman
29bc361d6c remove global constants; disentangle hwacha a bit 2012-11-17 17:24:08 -08:00
Andrew Waterman
5a7777fe4d clock gate integer datapath more aggressively 2012-11-17 06:48:44 -08:00
Andrew Waterman
cc067026a2 pipeline D$ response -> FPU regfile 2012-11-17 06:48:11 -08:00
Andrew Waterman
e68b039133 fix misc. D$ control bugs 2012-11-17 06:47:27 -08:00
Andrew Waterman
dad7b71062 provide cmd/addr with cache response 2012-11-16 21:26:12 -08:00
Andrew Waterman
cb8ac73045 provide store data with cache response 2012-11-16 21:15:13 -08:00
Andrew Waterman
9e010beffe fix D$ refill bug 2012-11-16 21:05:29 -08:00
Andrew Waterman
8dce89703a new D$ with better QoR and AMO pipelining 
Vector unit is disabled because nack handling needs to be fixed.
 2012-11-16 02:39:33 -08:00
Andrew Waterman
a90a1790a5 improve tlb qor 2012-11-16 01:59:38 -08:00
Andrew Waterman
ff8c736d94 move icache invalidate out of request bundle 2012-11-16 01:55:45 -08:00
Andrew Waterman
6d10115b19 fix D$ tag width 2012-11-15 16:46:39 -08:00
Yunsup Lee
be1980dd2d refactored vector queue interface 2012-11-07 01:15:33 -08:00
Yunsup Lee
8764fe786a refactored vector tlb 2012-11-06 23:53:52 -08:00
Yunsup Lee
9a02298f6f andrew's fix for tlb lockup 2012-11-06 23:52:58 -08:00
Andrew Waterman
4d1ca8ba3a remove more global consts; refactor DTLBs 
D$ now contains DTLB. provide full VAddr with initial request.
VU now has its own DTLBs.
 2012-11-06 08:13:44 -08:00
Andrew Waterman
e76892f758 remove more global constants 2012-11-06 02:55:45 -08:00
Andrew Waterman
c5b93798fb factor out more global constants 2012-11-05 23:52:32 -08:00
Yunsup Lee
ee081d1671 modify code to fix UFix := Bits error 2012-11-05 01:35:55 -08:00
Yunsup Lee
2a25307a8f revamp the vector unit with the new frontend 2012-11-05 01:35:55 -08:00
Andrew Waterman
5b20ed71be move rd=0 check into bypass logic 
before, the check was in the write enable logic, but moving it obviated
an awkward corner case for mtpcr with rd=0.
 2012-11-05 01:30:57 -08:00
Andrew Waterman
5e103054fd fix bug in quine mccluskey 2012-11-05 00:28:25 -08:00
Andrew Waterman
e9eca6a95d refactor I$ config; remove Top class 2012-11-04 16:59:36 -08:00
Andrew Waterman
7380c9fe60 aggressively clock gate int and fp datapaths 2012-11-04 16:40:14 -08:00
Andrew Waterman
bd2d61de03 use 8T SRAM for I$; gate clock more aggressively 2012-11-04 16:39:25 -08:00
Andrew Waterman
fedee6c67d add generic error correcting codes 2012-10-30 01:03:47 -07:00
Andrew Waterman
5773cbb68a rejigger htif to use UncoreConfiguration 2012-10-18 17:26:03 -07:00
Henry Cook
e2eb7ce8e9 Cleanup git incompetence 2012-10-16 16:54:58 -07:00
Henry Cook
88ac5af181 Merged consts-as-traits 2012-10-16 16:32:35 -07:00
Henry Cook
6cff1c13d8 Refer to traits moved to uncore, add UncoreConfiguration to top 2012-10-16 14:22:23 -07:00
Andrew Waterman
b9a2af697d turn off HAVE_VEC as it's currently broken 
the new I$/frontend needs to be integrated
 2012-10-16 07:38:19 -07:00
Andrew Waterman
0a640f2cc6 make DecodeLogic deterministic (hopefully) 2012-10-16 04:51:21 -07:00
Andrew Waterman
5821900329 don't refetch from I$ if on same 16B block 2012-10-16 02:24:38 -07:00
Andrew Waterman
b955985b38 improve divider QoR 2012-10-16 02:24:38 -07:00
Andrew Waterman
197154c485 use BTB for JALR 2012-10-16 02:24:37 -07:00
Andrew Waterman
fc648d13a1 remove old Mux1H; add implicit conversions 2012-10-16 02:24:37 -07:00
Andrew Waterman
661f8e635b merge I$, ITLB, BTB into Frontend 2012-10-16 02:24:37 -07:00
Andrew Waterman
fcd69dba98 add optional early-out to mul/div 2012-10-16 02:24:37 -07:00
Andrew Waterman
27ddff1adb simplify and improve multiplier 2012-10-16 02:24:37 -07:00
Henry Cook
8970b635b2 improvements to implicit RocketConfiguration parameter 2012-10-15 16:29:49 -07:00
Henry Cook
a7a4e65690 Initial verison of reading config from files 2012-10-15 16:05:50 -07:00
Henry Cook
5d2a470215 all rocket-specific arbiters in one file and refactored traits slightly 2012-10-15 16:05:32 -07:00
Huy Vo
1864e41361 memserdes + slowio out of rocket and into uncore 2012-10-10 15:25:24 -07:00
Huy Vo
fe21142972 fixed memdessert unpacking 2012-10-09 13:03:17 -07:00
Henry Cook
9025d0610c first pass at configuration object passed as implicit parameter 2012-10-07 22:37:29 -07:00
Henry Cook
dfdfddebe8 constants as traits 2012-10-07 22:20:03 -07:00
Henry Cook
b5ff436092 decode constant object split into multiple objects 2012-10-05 15:50:42 -07:00
Andrew Waterman
ed8cc4a1cf eliminate D$ probe->WB critical path 2012-10-04 09:05:14 -07:00
Huy Vo
e909093f37 factoring out uncore into separate uncore repo 2012-10-01 16:08:41 -07:00
Henry Cook
b9a9664de5 uncore and rocket changes for new xact types 2012-10-01 10:47:36 -07:00
Huy Vo
d9cb96c0ae factored out common stuff to ChiselUtil 2012-09-27 22:53:34 -07:00
Andrew Waterman
667b4ee858 remove Queue flush port (override reset instead) 2012-08-22 13:39:19 -07:00
Andrew Waterman
d4a001b867 add PriorityMux; use to implement PriorityEncoder 2012-08-22 13:38:25 -07:00
Andrew Waterman
743e032f06 generalize interface to DecodeLogic 2012-08-22 13:38:07 -07:00
Andrew Waterman
0f20771664 rename queue to Queue 
fixes build with case-insensitive file system
 2012-08-08 22:11:59 -07:00
Andrew Waterman
897a4e349b fix some LLC control bugs 2012-08-06 17:10:04 -07:00
Andrew Waterman
e9c35b4923 ameliorate DTLB kill->rdy critical path 2012-08-06 17:05:05 -07:00
Andrew Waterman
b94e6915ab refactor IPIs; use new tohost/fromhost protocol 2012-08-03 19:00:34 -07:00
Andrew Waterman
6510f020c7 fix deadlock in coherence hub 2012-08-03 19:00:03 -07:00
Andrew Waterman
e3726c4db0 fix control bug in LLC 
structural hazard on tag ram caused deadlock
 2012-08-03 18:59:37 -07:00
Andrew Waterman
def913096e pipeline LLC further 2012-07-31 17:45:14 -07:00
Andrew Waterman
3a8f3e0de5 further pipeline the LLC 2012-07-30 20:12:11 -07:00
Andrew Waterman
80c243469e add flow queues and skid buffers 
hopefully they work
 2012-07-30 18:47:12 -07:00
Andrew Waterman
be4fa936dd fix PriorityEncoderOH bug 2012-07-30 18:28:54 -07:00
Andrew Waterman
2ec76390e3 improve PriorityEncoderOH and add Counter util 2012-07-30 16:06:55 -07:00
Yunsup Lee
2af84f994a remove reset pin on llc 2012-07-28 21:14:51 -07:00
Yunsup Lee
0a1cd1175c add reset pin to llc 2012-07-27 18:44:39 -07:00
Huy Vo
db91c4cf6c hwacha 2012-07-27 18:13:20 -07:00
Huy Vo
32a16d183f consts file doesn't depend on WIDTH_PVFB if HAVE_PVFB == false 2012-07-27 18:13:20 -07:00
Andrew Waterman
130fa95ed6 expand HTIF's PCR register space 2012-07-27 14:52:39 -07:00
Andrew Waterman
7778802395 reduce number of outstanding transactions 2012-07-26 14:51:41 -07:00
Andrew Waterman
9c50621a19 remove chip-specific uncore gunk 2012-07-26 03:26:52 -07:00
Andrew Waterman
a5bea4364f memory system bug fixes 2012-07-26 00:05:21 -07:00
Yunsup Lee
3a2b305ddf change htif width to 16 2012-07-25 17:25:50 -07:00
Andrew Waterman
177dbdadd9 merge HTIF port and backup memory port 2012-07-25 00:18:02 -07:00
Yunsup Lee
309193dd07 change llc size 2012-07-24 14:10:29 -07:00
Yunsup Lee
6541cf22a4 fix bug in coherence hub, respect xact_rep.ready 2012-07-23 20:56:55 -07:00
Yunsup Lee
f4e3e72ad1 hoist HTIF_WIDTH out to consts 2012-07-23 17:30:04 -07:00
Andrew Waterman
a21c355114 fix htif split request/response 2012-07-23 17:15:16 -07:00
Andrew Waterman
938effc053 don't dequeue probe queue during reset 2012-07-22 21:05:52 -07:00
Yunsup Lee
379f021359 change ioHTIF interface between the tile/uncore boundary to cope with asynchrony 2012-07-22 18:26:02 -07:00
Yunsup Lee
c892950bf1 hoist out uncore as its own component 2012-07-22 17:48:17 -07:00
Huy Vo
0a97d6ab4d type casting 2012-07-18 13:03:35 -07:00
Andrew Waterman
f42c6afed2 decouple all interfaces between tile and top 
also, add an "incoherent" bit to tilelink to indicate no probes needed
 2012-07-17 22:55:40 -07:00
Andrew Waterman
4e44ed7400 allow back pressure on IPI requests 2012-07-17 22:55:40 -07:00
Yunsup Lee
f633a55722 fix dcache tag array size 2012-07-16 22:19:03 -07:00
Andrew Waterman
e496cd7584 use Mem to implement queues to speed things up 2012-07-13 21:48:05 -07:00
Huy Vo
fd95159837 INPUT/OUTPUT orderring swapped 2012-07-12 18:16:57 -07:00
Andrew Waterman
bac82762d3 use only one (wide) tag ram for set assoc. caches 2012-07-12 14:50:12 -07:00
Andrew Waterman
429fcbed8e fix some LLC bugs 2012-07-11 17:56:39 -07:00
Andrew Waterman
f645fb4dd7 add L2$ 
It still has performance bugs but no correctness bugs AFAIK.
 2012-07-10 05:23:29 -07:00
Andrew Waterman
5035374f36 update to new chisel 2012-07-08 17:59:41 -07:00
Andrew Waterman
39d198ecdc fix htif handling of large memory reads 2012-06-26 19:12:11 -07:00
Andrew Waterman
4e5f874266 update to new chisel/hwacha 2012-06-08 00:13:14 -07:00
Huy Vo
a99cebb483 ioDecoupled -> FIFOIO, ioPipe -> PipeIO 2012-06-06 18:22:56 -07:00
Huy Vo
04304fe788 moving util out into Chisel standard library 2012-06-06 12:51:26 -07:00
Huy Vo
c975c21e44 views removed 2012-06-06 12:51:26 -07:00
Andrew Waterman
943b6d0616 remove debug println 2012-06-06 02:48:48 -07:00
Andrew Waterman
7f6319047e update to new scala/chisel/Mem 2012-06-06 02:47:22 -07:00
Huy Vo
7408c9ab69 removing wires 2012-05-24 10:42:39 -07:00
Huy Vo
181b20d69c working vec unit with pvfb 2012-05-24 10:38:14 -07:00
Andrew Waterman
faee45bf4c fix setpcr/clearpcr not writing rd 2012-05-21 07:25:35 -07:00
Yunsup Lee
c9602a0d2e fix vector control decode bug 2012-05-15 10:26:37 -07:00
Gage W Eads
d0bc995c88 Fixed IRQ_IPI -> IRQ_TIMER typo 2012-05-14 22:25:12 -07:00
Andrew Waterman
a2f6d01c1b add programmable coreid register 2012-05-09 03:09:22 -07:00
Andrew Waterman
e0e1cd5d32 add IPIs and an IPI test 
IPIs are routed through the HTIF, which seems weird, but that makes it
so cores can bring each other out of reset with IPIs.
 2012-05-08 22:58:00 -07:00
Henry Cook
87cbae2c8a Removed defunct ioDmem 2012-05-07 17:31:39 -07:00
Andrew Waterman
b851f1b34c support maximum-MTU HTIF packets 2012-05-03 21:11:43 -07:00
Andrew Waterman
171c87002e reduce HTIF clock divider for now 2012-05-03 04:21:11 -07:00
Andrew Waterman
e1f9dc2c1f generalize page table walker 
also, don't instantiate vitlb when !HAVE_VEC
 2012-05-03 02:29:09 -07:00
Andrew Waterman
2d4e5d3813 fix pseudo-LRU verilog generation bug 2012-05-02 19:31:31 -07:00
Henry Cook
622a801bb1 Refactored cpu/cache interface to use nested bundles 2012-05-02 11:54:28 -07:00
Andrew Waterman
65ff397122 improved instruction decoding 
it now makes use of don't-cares by performing logic minimization
 2012-05-01 20:16:36 -07:00
Andrew Waterman
4cfa6cd9a8 force Top.main's return type to Unit 2012-05-01 19:55:16 -07:00
Andrew Waterman
5819beed64 use parameterized FP units 2012-05-01 01:25:43 -07:00
Andrew Waterman
eafdffe125 simplify page table walker; speed up emulator 2012-05-01 01:24:36 -07:00
Andrew Waterman
c13d3e6f88 fix probe tag read-modify-write atomicity violation 2012-04-26 02:29:31 -07:00
Andrew Waterman
66f86a2194 use pseudo-LRU replacement for TLBs 2012-04-26 02:29:30 -07:00
Andrew Waterman
a0378c5d2f remove faulting TLB entry after page fault 
this vastly reduces the frequency with which the TLB must be flushed
 2012-04-26 02:29:30 -07:00
Andrew Waterman
6d8fc74378 fix DTLB permissions bug 2012-04-26 02:29:30 -07:00
Henry Cook
1ed89f1cab Fixed abort bug: removed uneeded state, added mshr guard on xact_abort.valid and xact_init.ready on same cycle 2012-04-24 17:17:42 -07:00