Henry Cook
9708d25dff
Restructure L2 state machine and utilize HeaderlessTileLinkIO
2015-04-06 12:19:51 -07:00
Andrew Waterman
9ade0e41cc
Integrate divide/sqrt unit
2015-04-04 16:39:17 -07:00
Andrew Waterman
fe27b9b1b2
Support writing sstatus.fs even without an FPU
2015-04-04 15:20:18 -07:00
Andrew Waterman
bce62d5774
Update PTE format to reflect reserved bits
2015-04-04 15:19:15 -07:00
Colin Schmidt
a369d8f17f
Add fpu port to the rocc interface
2015-04-02 01:30:11 -07:00
Henry Cook
ced627f00a
slight mod to pending_puts
...
cleaner state transition logic
2015-04-01 15:24:53 -07:00
Andrew Waterman
c941f0a68e
New virtual memory implementation (Sv39)
2015-03-27 16:21:29 -07:00
Andrew Waterman
d912ea265e
New virtual memory implementation (Sv39)
2015-03-27 16:20:59 -07:00
Henry Cook
8959b2e81a
TileLinkEnqueuer
2015-03-26 13:29:52 -07:00
Henry Cook
b7af610569
broadcast hub bugfix
2015-03-26 11:29:04 -07:00
Henry Cook
4176edaa34
clean up tracker allocation
2015-03-26 10:17:51 -07:00
Andrew Waterman
faada5f110
Mask off LSBs of sepc/mepc/stvec
...
Therefore, they cannot generate misaligned instruction exceptions.
When a misaligned instruction exception does occur, mbadaddr
retains the misaligned PC bits, so no information is actually lost.
2015-03-25 00:20:58 -07:00
Andrew Waterman
543ac91cf2
Misaligned fetches can't happen at the I$ anymore
...
They are caught before the I$ ever sees them, so leverage that fact.
2015-03-24 23:55:43 -07:00
Andrew Waterman
90b31586ff
Misc. CSR fixes/improvements
...
- Support RV32 mstatus register
- Don't ignore mstatus.stie bit
- Support custom M-mode R/W CSRs for Raven chip
2015-03-24 23:50:18 -07:00
Andrew Waterman
822698b567
support disabling supervisor mode (via UseVM parameter)
2015-03-24 19:32:45 -07:00
Andrew Waterman
0332c1e7fe
Reduce latency of page table walks
...
A small cache in the PTW caches non-leaf PTEs, reducing latency and D$ misses.
2015-03-24 18:58:38 -07:00
Andrew Waterman
31d17cbf86
Hard-wire LSB of JALR to 0, as sent to BTB
2015-03-21 00:16:34 -07:00
Henry Cook
db5511300d
Merge branch 'l2-subblock-merging'
2015-03-18 23:52:06 -07:00
Henry Cook
3cf033180f
pending read fix
2015-03-18 22:41:09 -07:00
Henry Cook
004ad11af6
cleanup pending signals
2015-03-18 22:14:41 -07:00
Henry Cook
002851f836
disentangle is_hit logic
2015-03-18 21:11:40 -07:00
Henry Cook
b92ea60891
you can 'hit' with putblocks even when the tag doesn't match but you still better writeback
2015-03-18 19:32:46 -07:00
Henry Cook
fb8071c12d
generous hit detection on PutBlocks
2015-03-18 18:49:32 -07:00
Henry Cook
19059bf0eb
put data can be used for ignts
2015-03-18 18:28:03 -07:00
Henry Cook
1ff184bf62
first cut at optimized state transitions
2015-03-18 17:55:05 -07:00
Henry Cook
e325399c87
Re-split mem resp tag and data queues
2015-03-18 12:49:53 -07:00
Henry Cook
42aa4aa8ca
Secondary miss param
2015-03-17 22:53:50 -07:00
Henry Cook
b364d387de
Merge branch 'l2-subblock-merging' of github.com:ucb-bar/uncore into l2-subblock-merging
2015-03-17 22:46:54 -07:00
Henry Cook
825c4b2850
make ignts more eager
2015-03-17 22:44:53 -07:00
Yunsup Lee
aa5435800d
fix get merging, and always turn it on
2015-03-17 22:43:00 -07:00
Yunsup Lee
53617d6df5
fix long-standing dcache bug
...
have to initialize register, if it is used the same cycle it is begin written
2015-03-17 21:45:17 -07:00
Yunsup Lee
f4f59464df
fix pending_puts initialization
2015-03-17 21:44:26 -07:00
Henry Cook
0e4cf74d8a
always merge Puts
2015-03-17 20:53:27 -07:00
Henry Cook
d48775eecb
cleanup outdated comments
2015-03-17 20:31:23 -07:00
Henry Cook
638bace858
avoid reading data when write mask is full
2015-03-17 20:28:21 -07:00
Henry Cook
b9591b297c
added s_wait_puts to L2AcquireTracker
2015-03-17 20:28:21 -07:00
Henry Cook
2d3f947a9c
cleaned up finish counter
2015-03-17 20:28:21 -07:00
Yunsup Lee
9de5161d7a
guard all writes to data ram with masks
2015-03-17 20:24:04 -07:00
Yunsup Lee
d14efce0b4
fix wmask_buffer initialization
2015-03-17 19:54:11 -07:00
Yunsup Lee
2d7375760d
set pending_writes for puts
2015-03-17 18:35:04 -07:00
Yunsup Lee
504eedbf89
fixes in in bit manipulation
2015-03-17 18:07:52 -07:00
Henry Cook
b08dced37c
first cut at pending scoreboarding
2015-03-17 17:51:00 -07:00
Yunsup Lee
4fd01d82b8
don't block finish messages when grant'ing
2015-03-17 17:48:02 -07:00
Yunsup Lee
a52a729ab9
bugfix wmask handling
2015-03-17 15:54:21 -07:00
Henry Cook
fc0ae81a97
added finish counter
2015-03-17 15:04:30 -07:00
Henry Cook
d774afaf73
Merge branch 'l2-subblock-merging' of github.com:ucb-bar/uncore into l2-subblock-merging
2015-03-17 13:10:42 -07:00
Henry Cook
5c2461c743
merge data wmask bugfix
2015-03-17 13:09:47 -07:00
Henry Cook
dc88614094
overlapping read/resps in l2 fix
2015-03-17 13:09:47 -07:00
Henry Cook
730a13abf2
pending read fix
2015-03-17 13:09:46 -07:00
Henry Cook
23f8033df5
turn off self probes again
2015-03-17 13:09:46 -07:00
