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Commit Graph

3830 Commits

Author SHA1 Message Date
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
aae7a67781 fix llc refill/writeback bugs 2012-12-06 02:07:03 -08:00
Andrew Waterman
d911e635d6 simplify c++ memory models; support +dramsim flag
works for both vlsi and emulator
2012-12-04 07:04:26 -08:00
Andrew Waterman
50e9d952e8 don't initiate llc refill until writeback drains 2012-12-04 06:57:53 -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
5dfb388f03 update to newest rocket 2012-11-27 02:43:31 -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
ea7029484e update to latest rocket 2012-11-26 20:57:12 -08:00
Andrew Waterman
8103676b37 reduce physical address space to 4GB 2012-11-26 20:54:56 -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
e12af07722 update to newest rocket 2012-11-25 04:40:46 -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
9372912a9c update to newest rocket 2012-11-20 05:42:44 -08:00
Andrew Waterman
6d47d18c2b catch sigterm to gracefully exit (fixes vcd) 2012-11-20 05:40:44 -08:00
Andrew Waterman
7330deb13a print stack trace if elaboration fails 2012-11-20 05:39:48 -08:00
Andrew Waterman
56f9b9721d treat prefetches as read requests 2012-11-20 05:38:49 -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
4d73e6e38a revamp vector yet again with new D$ 2012-11-18 03:14:22 -08:00
Yunsup Lee
6bd4f93f8c pull out prefetch commands from isRead 2012-11-18 03:13:17 -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
7bcf59a18f support continous compilation via "make test"
for c++ emulator only, for now
2012-11-17 19:58:18 -08:00
Andrew Waterman
b58214d7e3 remove more global constants 2012-11-17 17:25:43 -08:00
Andrew Waterman
29bc361d6c remove global constants; disentangle hwacha a bit 2012-11-17 17:24:08 -08:00
Andrew Waterman
cf05b604b3 upgrade to new rocket; improve vlsi makefiles 2012-11-17 07:21:29 -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
672e904c86 update to new rocket/uncore 2012-11-16 02:41:50 -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
3e6dc35809 issue self-probes for uncached read transactions
this facilitates I$ coherence.  but it seems like a hack and perhaps
the mechanism should be rethought.
2012-11-16 02:37:56 -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
1a91637673 refactored vector queue interface 2012-11-07 01:16:02 -08:00
Yunsup Lee
be1980dd2d refactored vector queue interface 2012-11-07 01:15:33 -08:00