Wesley W. Terpstra
5886025b1a
sbus => pbus: 2 buffers should already be enough
...
There is a buffer on the sbus backside.
There is a buffer on the pbus frontside.
Between them is only an AtomicAutomata.
That should be enough for most designs.
2017-09-05 15:03:38 -07:00
Henry Cook
a902e15987
pbus: clarify that we are adding buffers when attaching to sbus
2017-09-05 15:03:38 -07:00
Henry Cook
8fc4d78c84
frontbus: provide fifofixer on the side of the front bus where masters connect
2017-09-05 15:03:38 -07:00
Megan Wachs
667d966410
TLBuffer: Create a wrapper module for TLBufferChain, to allow for more stable naming
2017-09-05 15:03:38 -07:00
Megan Wachs
94f06dc85c
pbus: turn down overkill buffering between PBus and SBus
2017-09-05 15:03:38 -07:00
Megan Wachs
c353f68dc0
buses: name dummy buffers too
2017-09-05 15:03:38 -07:00
Henry Cook
3bde9506c6
coreplex: allow buffer chains on certain bus ports
2017-09-05 15:03:36 -07:00
Megan Wachs
57d0360c35
frontbus: Name the connection.
2017-08-30 18:07:34 -07:00
Megan Wachs
c99afe4c66
buses: Name all the things.
2017-08-30 17:31:42 -07:00
Henry Cook
32cb358c81
coreplex: include optional tile name for downstream name stabilization
2017-08-30 15:48:55 -07:00
Megan Wachs
183fefb2b9
Front/SystemBus: allow naming the intermediate TLNodes that get sprinkled in
2017-08-30 15:27:56 -07:00
Wesley W. Terpstra
d5b62dffda
SystemBus: add stupidly many (4 more) buffers from sbus=>pbus
...
This should probably be reverted.
2017-08-30 14:22:49 -07:00
Henry Styles
f7330028cc
Add optional frontbus for peripherals mastering into SBus. Switch FF and Buffer order on non-tile masters into SBus. Buffer non-L2 side of splitter
2017-08-30 14:22:49 -07:00
Wesley W. Terpstra
173f185b17
Merge pull request #976 from freechipsproject/system-buffer
...
SystemBus: add output buffering
2017-08-30 23:22:13 +02:00
Wesley W. Terpstra
656609d610
SystemBus: split FIFOFixers along bus boundaries
...
If you have a system with a lot of periphery slaves, you wan to FIFO fix
them on the periphery bus rather than paying the circuit cost at the sbus.
2017-08-30 13:28:11 -07:00
Megan Wachs
91c3fa2865
Merge pull request #979 from freechipsproject/buffer_params_debuginfo
...
TLBuffer: Add a nodedebugstring
2017-08-29 17:52:50 -07:00
Megan Wachs
a62ce0afe6
TLBuffer: Add a nodedebugstring for quick browsing of the properties of the buffer.
2017-08-29 10:36:46 -07:00
Wesley W. Terpstra
bf19440db5
SystemBus: use a full buffer on slaves
2017-08-26 02:47:04 -07:00
Megan Wachs
bdaae40035
Merge pull request #973 from freechipsproject/named_buffers
...
systemBus: allowing naming the TLBuffers which get inserted
2017-08-24 16:31:14 -07:00
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 )
...
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
...
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
...
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
...
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
...
a62e76cb16
2017-08-17 21:27:08 -07:00
Shreesha Srinath
b1719cfee0
Fixing requirements for PAddrBits ( #961 )
...
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
...
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 )
...
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
...
Fix acquire before release
2017-08-13 18:29:58 -07:00
Megan Wachs
57a5965bf4
Merge pull request #954 from freechipsproject/max-core-cycles
...
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
...
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
...
oops...
2017-08-13 13:03:35 -07:00
Andrew Waterman
41a2a03f90
Merge pull request #953 from freechipsproject/fix-dcache-ecc
...
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
...
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 )
...
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 )
...
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
...
Fix IBuf bug
2017-08-09 10:38:35 -07:00
Andrew Waterman
721770244e
Fix IBuf bug
...
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
...
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
