Megan Wachs
103b6bc6d3
systemBus: allowing naming the TLBuffers which get inserted
2017-08-24 14:49:12 -07:00
Wesley W. Terpstra
17134125e1
SystemBus: remove misnamed functions ( #972 )
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These functions were actually for cross connecting chips.
2017-08-24 23:35:01 +02:00
Megan Wachs
6e689f55ed
Merge pull request #965 from freechipsproject/quash_x
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async_reset_reg: Squash X's the same as for synchronous reg
2017-08-21 16:48:25 -07:00
Megan Wachs
81890e3a42
async_reg: Clean up some funky indentation
2017-08-21 16:06:36 -07:00
Megan Wachs
4f45379863
async_reset_reg: Squash X's the same as for reset reg
2017-08-21 14:33:19 -07:00
Andrew Waterman
82df766f4a
Merge pull request #963 from freechipsproject/interrupt-order
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Respect ISA requirements on interrupt priority order
2017-08-18 00:10:19 -07:00
Andrew Waterman
8087a205cc
Remove redundant check in interrupt priority encoding
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chooseInterrupts already sorts M interrupts above S interrupts.
2017-08-17 22:23:42 -07:00
Andrew Waterman
cbe7c51b50
Respect ISA requirements on interrupt priority order
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a62e76cb16
2017-08-17 21:27:08 -07:00
Shreesha Srinath
b1719cfee0
Fixing requirements for PAddrBits ( #961 )
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Previously, the requirement for PAddrBits only checked to be equal or greater than the bundle bits. Changing it to check for these to match exactly as for cases when the PAddrBits greater than address bits we could run into scenarios which cause possible address wrap around issues.
2017-08-17 11:53:59 -07:00
Megan Wachs
1db4b3be9a
Merge pull request #957 from freechipsproject/param_jtag_vpi
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jtag_vpi: Use Parameterized Black Box
2017-08-14 18:37:30 -07:00
Megan Wachs
8783d51c97
jtag_vpi: Use Parameterized Black Box to allow TestHarnesses to override the clock speed
2017-08-14 17:25:47 -07:00
Wesley W. Terpstra
710a782145
HeterogenousBag: empty bags were being combined! ( #956 )
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This lead to strange firrtl errors when you had two empty
HeterogeneousBags in the same Bundle.
2017-08-14 15:48:42 -07:00
Andrew Waterman
e945f6e265
Merge pull request #955 from freechipsproject/fix-acquire-before-release
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Fix acquire before release
2017-08-13 18:29:58 -07:00
Megan Wachs
57a5965bf4
Merge pull request #954 from freechipsproject/max-core-cycles
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Add a +max-core-cycles PlusArg
2017-08-13 16:45:59 -07:00
Megan Wachs
88332bd885
max-core-cycles: Add a +max-core-cycles PlusArg
2017-08-13 15:47:14 -07:00
Andrew Waterman
3cbc5262ec
Don't permit new acquires until the release queue is drained
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If the queue is not empty before a dirty miss, C could block D.
I haven't seen this in the wild, but it could happen because of
dirty probe responses backed up in the queue.
2017-08-13 13:18:45 -07:00
Andrew Waterman
0190724492
Actually use the C-channel acquire-before-release queue
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oops...
2017-08-13 13:03:35 -07:00
Andrew Waterman
41a2a03f90
Merge pull request #953 from freechipsproject/fix-dcache-ecc
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Don't trigger ECC writebacks when a release is in flight
2017-08-12 16:47:19 -07:00
Andrew Waterman
7387f2a93a
Don't block D-channel when handling a probe
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This is an acquire-before-release regression.
2017-08-12 16:13:24 -07:00
Andrew Waterman
604abd5b07
Only report ECC errors when the RAM was actually read
2017-08-12 15:28:03 -07:00
Andrew Waterman
18fb052fc9
DRY
2017-08-12 15:27:30 -07:00
Andrew Waterman
176110b6d3
Don't trigger ECC writebacks when a release is in flight
2017-08-12 15:23:57 -07:00
Wesley W. Terpstra
f191bb994c
PatternPusher: can now expect a certain output ( #952 )
2017-08-11 18:10:27 -07:00
Wesley W. Terpstra
baf769f924
tilelink: add PatternPusher, a device to inject a fixed traffic pattern ( #950 )
2017-08-11 15:07:10 -07:00
Andrew Waterman
a3358f34a0
Fix priority inversion for two back-to-back divides ( #948 )
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If the first one is killed for some unrelated reason (e.g. write port
hazard), the second one will still issue to the div-sqrt unit. While
it will itself later be killed, the fact that the later instruction
acquires a resource needed by the former instruction leads to deadlock.
2017-08-10 17:12:09 -07:00
Wesley W. Terpstra
fa867bc478
plusarg_reader: make synthesis path a no brainer ( #947 )
2017-08-10 16:35:30 -07:00
Andrew Waterman
0a591c5b5b
Roll back use of UIntToOH1 ( #946 )
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These appear to be equivalent, but the old one seems to fail in Vivado and
this one seems to pass. This is not yet conclusive.
2017-08-09 18:39:47 -07:00
Yunsup Lee
0b8b136831
Merge pull request #943 from freechipsproject/fix-ibuf
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Fix IBuf bug
2017-08-09 10:38:35 -07:00
Andrew Waterman
721770244e
Fix IBuf bug
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Don't examine a packet's xcpt signal if it might be invalid. In this case,
the correct fix is to not examine xcpt at all; the deleted code was vestigial.
(Note, the other use of xcpt(j+1) in this code is indeed safe.)
2017-08-09 09:47:51 -07:00
Yunsup Lee
fb2c22ca80
Merge pull request #944 from freechipsproject/fix-vlsi-mem-gen
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memgen: also randomize ren and rand register
2017-08-08 23:18:08 -07:00
Andrew Waterman
31b75987ca
Avoid width warning
2017-08-08 20:57:31 -07:00
Yunsup Lee
8705b0e070
memgen: also randomize ren and rand register
2017-08-08 20:41:53 -07:00
Richard Xia
97ad528a32
Merge pull request #941 from freechipsproject/bump-riscv-tools
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Bump riscv-tools to bump riscv-tests for mi-csr test fix.
2017-08-08 18:50:29 -07:00
Wesley W. Terpstra
49ba31ac34
Merge pull request #942 from freechipsproject/bus-blocker-lock
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Bus blocker lock
2017-08-08 18:03:36 -07:00
Wesley W. Terpstra
a9b1410f01
BusBlocker: parameterize page granularity
2017-08-08 17:10:01 -07:00
Wesley W. Terpstra
010ba94474
BusBlocker: rename a variable
2017-08-08 17:00:22 -07:00
Wesley W. Terpstra
6d6fc38787
BusBlocker: lock bit should affect the prior PMP address, not next
2017-08-08 17:00:12 -07:00
Richard Xia
dd5934b6dc
Bump riscv-tools to bump riscv-tests for mi-csr test fix and pull in stable binutils.
2017-08-08 16:29:26 -07:00
Yunsup Lee
0a351f677d
Merge pull request #940 from freechipsproject/fix-ecc-way
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Don't merge stores that manifest WAW hazards
2017-08-08 16:05:21 -07:00
Yunsup Lee
8cc41ab46b
Merge pull request #936 from freechipsproject/vlsi-mem-gen
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Improve and use vlsi_mem_gen for verilator flow
2017-08-08 16:04:53 -07:00
Andrew Waterman
809c7e8551
Don't merge stores that manifest WAW hazards
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The following sequence would drop the first store when eccBytes=4:
sb x0, 0(t0)
nop
sb x0, 4(t0)
nop
sb x0, 1(t0)
Because the first and second store are to different ECC granules, the
hazard check correctly allowed the second one to proceed, but the third
was merged with the second, even though it conflicted with the first.
So, don't allow the third to be merged with the second, since the second
stored to a different ECC granule.
2017-08-08 15:19:05 -07:00
Wesley W. Terpstra
3ef6e4c9f2
Merge pull request #939 from freechipsproject/bus-blocker
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tilelink: PMP controlled BusBlocker prevents bus accesses
2017-08-08 15:06:55 -07:00
Andrew Waterman
82e13443b2
Merge pull request #937 from freechipsproject/critical-paths
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Perform tag error detectoin/correction in same cycle as RAM
2017-08-08 15:03:28 -07:00
Andrew Waterman
dd103ae7ec
Merge pull request #938 from freechipsproject/dtim-ignore-cacheable
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Don't report to the DTIM that data is cacheable
2017-08-08 15:00:13 -07:00
Wesley W. Terpstra
8f261adc6b
BusBlocker: change default policy to deny
2017-08-08 14:19:59 -07:00
Wesley W. Terpstra
0d76e96b88
tilelink: PMP controlled BusBlocker prevents bus accesses
2017-08-08 13:28:01 -07:00
Andrew Waterman
7935c61c19
Don't report to the DTIM that data is cacheable
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Otherwise, it will attempt to perform AMOs where they're unsupported!
2017-08-08 11:55:04 -07:00
Andrew Waterman
74d309c18e
Make I vs. D a static property of TLB, not an input pin
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The microarchitecture doesn't really support unified TLBs, so don't fake it.
2017-08-08 11:54:47 -07:00
Andrew Waterman
e92981b0bd
DRY
2017-08-08 11:46:38 -07:00
Andrew Waterman
62ccba304c
Perform tag error detectoin/correction in same cycle as RAM
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The tag RAMs tend to be fast, so take up some of the slack.
This makes s2_nack faster.
2017-08-08 10:21:30 -07:00
