riscv/rocket-chip
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Author SHA1 Message Date
Wesley W. Terpstra
fd76f45f65 Merge pull request #731 from ucb-bar/axi-zero-width 
axi4: Support AXI4-Lite properly
 2017-05-08 10:48:32 -07:00
Wesley W. Terpstra
2d8a49cc06 tilelink2: Fragmenter client must request global FIFO 2017-05-08 00:56:45 -07:00
Wesley W. Terpstra
36f4584bb1 axi4: Test AXI4-Lite in regression 2017-05-08 00:31:35 -07:00
Wesley W. Terpstra
3209e58845 axi4: SRAM support 0 userBits 2017-05-08 00:31:14 -07:00
Wesley W. Terpstra
db76ff2d86 axi4: Deinterleaver must gather R also for single ID 
In order to guarantee that a complete R can be sent without
sinking B, the Deinterleaver must do its job even on AXI-Lite.
 2017-05-08 00:17:06 -07:00
Wesley W. Terpstra
8fc27b0bf2 axi4: IdIndexer; a single ID does NOT imply no response interleaving 
Some slaves may never send R until you process their B.
Thus, while there is no read response interleaving, there
is still interleaving between R and B, which breaks AXI4ToTL.
 2017-05-08 00:17:06 -07:00
Wesley W. Terpstra
4847c32599 tilelink: ToAXI4 - must interlock till last beat 
AXI4 makes no guarantee that bursts are handled atomicly.
Thus, you could be part-way through a read burst and suddenly
a write cuts ahead and is visible later, violating FIFO.
 2017-05-08 00:17:06 -07:00
Wesley W. Terpstra
8169ba6411 axi4: IdIndexer now handles 0-width IDs 2017-05-08 00:17:02 -07:00
Andrew Waterman
7eefc12705 Support vectored stvec interrupts, too 
137812654e
 2017-05-07 15:40:08 -07:00
Andrew Waterman
c6135a02df Revert "rocket: hard-wire UXL/SXL fields to 0" 
This reverts commit ea0714bfcb.

We've waffled on this matter in the priv spec: 326bec83de
 2017-05-07 15:23:21 -07:00
Andrew Waterman
dd1546fd69 Check PPN LSBs for superpage PTEs 
5a32fe8782
 2017-05-05 15:30:09 -07:00
Yunsup Lee
431e726c29 Merge pull request #727 from ucb-bar/fix-axi2tl-timeout 
Wes's fix for AXI2TL timeout when writes backed up
 2017-05-04 01:42:48 -07:00
Scott Johnson
1b3b228790 ITIM supports PutPartial 2017-05-04 00:57:52 -07:00
Andrew Waterman
398600d4da Interlock to prevent ITIM hazard when tl.a.valid & tl.d.valid & !tl.d.ready 2017-05-04 00:57:29 -07:00
Scott Johnson
1cc665717d Wes fix for AXI2TL timeout when writes backed up 2017-05-04 00:54:21 -07:00
Andrew Waterman
e21b74c232 Merge pull request #724 from ucb-bar/rvc-speculative 
Fix RVC/uncacheable instruction memory performance bug
 2017-05-03 18:48:49 -07:00
Andrew Waterman
fa6ecdf813 Fix RVC/uncacheable instruction memory performance bug 
9c1d126965 was an incomplete fix, so
sometimes we were requesting pipeline replays when they weren't
necessary.
 2017-05-03 17:52:06 -07:00
Henry Cook
7b3d87a2e6 Merge pull request #723 from ucb-bar/fuzz-ranges 
Allow TL fuzzing range to be overridden
 2017-05-03 16:30:10 -07:00
Henry Cook
1f1240baf1 fuzzer: allow fuzzing range to be overridden 2017-05-03 15:29:14 -07:00
Henry Cook
cd547fabbd Merge pull request #695 from ucb-bar/pipeline-mmio 
Pipeline AXI4 MMIO
 2017-05-03 11:25:24 -07:00
Megan Wachs
f8c92d2669 Merge branch 'master' into pipeline-mmio 2017-05-03 08:37:12 -07:00
Andrew Waterman
4efcb5a139 Increase frontend decoupling (#722) 
Reduce pathological RVC stalls
 2017-05-03 07:54:46 -07:00
Henry Cook
05ca88fb47 Merge branch 'master' into pipeline-mmio 2017-05-03 01:59:59 -07:00
Megan Wachs
922a8ef5e0 local_interrupts: Correct off-by-1 if there is no SEIP 2017-05-02 21:55:25 -07:00
Henry Cook
4dd3345db2 Merge branch 'master' into pipeline-mmio 2017-05-02 16:23:26 -07:00
Yunsup Lee
1ecd63611f Merge pull request #718 from ucb-bar/dtim-putpartial 
Add PutPartial support to DTIM
 2017-05-02 15:42:28 -07:00
Andrew Waterman
3a1a37d41b Support PutPartial in ScratchpadSlavePort 2017-05-02 03:07:02 -07:00
Andrew Waterman
938b089543 Remove legacy devices that use AMOALU 
I'm going to change the AMOALU API, and so I'm removing dependent dead code.
 2017-05-02 03:05:41 -07:00
Andrew Waterman
f8151ce786 Remove subword load muxing in ScratchpadSlavePort 2017-05-02 00:14:46 -07:00
Andrew Waterman
044b6ed3f9 Improve logical ops in AMOALU 
As with integer ALU, shave off some muxing.
 2017-05-02 00:14:46 -07:00
Andrew Waterman
f49172b5bc ScratchpadSlavePort doesn't support byte/halfword atomics 2017-05-02 00:14:46 -07:00
Wesley W. Terpstra
fe280187a1 axi4: Fragmenter cuts all input channel readys 
AXI4 forbids any input to lead combinationally to an output.For the AXI4ToTL
direction, front-load the cuts for {AW, AR, W}.readyAXI4ToTL makes the R and
B channels irrevocable.
 2017-05-01 22:53:41 -07:00
Wesley W. Terpstra
3d06f01a2c rocket: turn on early ack for ITIM 2017-05-01 22:53:41 -07:00
Wesley W. Terpstra
58a4529cc5 axi4: the last missing piece for safe FIFO ordering 2017-05-01 22:53:41 -07:00
Wesley W. Terpstra
b0b5601e8d axi4: ToTL correct error handling 
If there is an illegal AWADDR = 0x2 on a 32-bit bus, remapping it
to an aligned address on the error device may make the mask
inconsistent with the address + size.
 2017-05-01 22:53:41 -07:00
Wesley W. Terpstra
661015a78d axi4: switch arbiter to round robin 2017-05-01 22:53:41 -07:00
Wesley W. Terpstra
976af7a8c7 tilelink2: better width inference for {left,right}OR 2017-05-01 22:53:41 -07:00
Wesley W. Terpstra
40f18e6e43 diplomacy: optimize IdRange overlap detection 2017-05-01 22:53:41 -07:00
Wesley W. Terpstra
30f1f1e7c7 rocket: turn on early ack for DTIM 2017-05-01 22:53:41 -07:00
Wesley W. Terpstra
6ee69454c3 tilelink2: Fragmenter now supports early Ack 2017-05-01 22:53:41 -07:00
Wesley W. Terpstra
e09fa866b7 tilelink2: FIFOFixer should NOT change client request status 
Just because some clients are not FIFO does not matter. Downstream
FIFOFixers will still present a legitimate single domain to those
client who care.
 2017-05-01 22:53:41 -07:00
Scott Johnson
b040a462c9 Wes's change to remove user bits from external AXI interface, and add 1 cycle latency to make sure external AXI is compliant 2017-05-01 22:53:41 -07:00
Wesley W. Terpstra
a71f708dc7 rocketchip: move the Error device to 0x3000 2017-05-01 22:53:41 -07:00
Wesley W. Terpstra
d27e1928dd axi4: make maxFlight a per-master parameter 2017-05-01 22:53:40 -07:00
Wesley W. Terpstra
e1a072a644 axi4: massage test cases into shape again 2017-05-01 22:53:40 -07:00
Wesley W. Terpstra
9f08c484bd tilelink2: ToAXI4 provide FIFO order semantics 2017-05-01 22:53:40 -07:00
Wesley W. Terpstra
61a6f94196 axi4: get unit tests legal again 2017-05-01 22:53:40 -07:00
Wesley W. Terpstra
bf5cb396b9 rocketchip: relax mmio no-interleaving requirement 2017-05-01 22:53:40 -07:00
Wesley W. Terpstra
24f577c156 axi4: Deinterleaver ensures R channel ID does not change till last 2017-05-01 22:53:40 -07:00
Wesley W. Terpstra
b4188ee625 axi4: ToTL supporting pipelined MMIO 2017-05-01 22:53:40 -07:00