riscv/rocket-chip
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Author SHA1 Message Date
Wesley W. Terpstra
695be2f0ae hasti: work-around unsupported 0-width signals 2016-06-01 16:38:49 -07:00
Howard Mao
8983b0e865 hopefully the last fix for AXI -> AHB converter 2016-06-01 15:01:52 -07:00
Howard Mao
53a0e6cb9c another fix for AXI -> AHB converter 2016-06-01 11:35:36 -07:00
Howard Mao
d0988902f2 fix NASTI -> HASTI bridge 2016-05-31 19:47:50 -07:00
Andrew Waterman
56897f707a Don't rely on Mux1H output when no inputs are hot 2016-05-27 13:38:01 -07:00
Andrew Waterman
056d7ec93a Drive hmastlock low in Nasti-Hasti converter 2016-05-27 12:23:18 -07:00
Andrew Waterman
e036d3a04a Chisel3: gender issue 2016-05-26 15:59:08 -07:00
Andrew Waterman
a2b9d337b6 No need for full-throughput queues in NastiErrorSlave 2016-05-26 01:03:40 -07:00
Andrew Waterman
2ece3e6102 Use Mem for ReorderQueue data 
This might improve FPGA QoR.
 2016-05-26 01:02:56 -07:00
Wesley W. Terpstra
1c8745dfd2 ahb: backport to chisel2 
Merges #16
 2016-05-25 12:11:26 -07:00
Donggyu
a9599302bd fix cloneType in nasti.scala (#14) 2016-05-24 17:10:17 -07:00
Andrew Waterman
5bc78aba99 Merge pull request #15 from terpstra/ahb 
Ahb
 2016-05-24 17:06:03 -07:00
Wesley W. Terpstra
b921bae107 ahb: eliminate trait abused for constants 2016-05-24 14:20:45 -07:00
Wesley W. Terpstra
200c69c106 ahb: support hmastlock acquistion of crossbar 2016-05-24 14:20:45 -07:00
Wesley W. Terpstra
e1e8eda419 ahb: add a test SRAM 2016-05-24 14:20:42 -07:00
Wesley W. Terpstra
1db40687c6 ahb: eliminate now-unnecesary non-standard hreadyin 2016-05-24 14:14:22 -07:00
Wesley W. Terpstra
15cad8414d ahb: put signals in the order they appear in signal traces in the spec 2016-05-24 14:14:22 -07:00
Wesley W. Terpstra
f30f8d9f79 ahb: reduce obsolete degenerate cases of a crossbar 2016-05-24 14:14:22 -07:00
Wesley W. Terpstra
0368b6db6b ahb: replace defective crossbar with a functional one 
The previous crossbar had the following bugs:
  1. a bursting master could be preempted
     the AHB-lite spec requires a slave receive the entire burst

  2. a waited master could be replaced
     the AHB-lite spec requires haddr/etc to remain unchanged

  3. hmastlock did no ensure exclusive access
     atomic operations could be pre-empted
 2016-05-24 14:14:22 -07:00
Wesley W. Terpstra
2b37f37335 ahb: helper methods 2016-05-24 14:14:21 -07:00
Wesley W. Terpstra
ef2aae26a8 ahb: rename hreadyout to standard hready, mark hreadyin for death 2016-05-24 14:14:21 -07:00
Wesley W. Terpstra
2f8a77f27a ahb: include all AHB-lite constants 2016-05-24 14:14:21 -07:00
Wesley W. Terpstra
7896c4157e ahb: parameterize poci 2016-05-24 14:14:21 -07:00
Wesley W. Terpstra
93447eb274 ahb: make hasti parameters location sensitive 2016-05-24 14:14:17 -07:00
Howard Mao
44740cb6b2 parameterize Hasti address and data bits 2016-05-06 11:30:50 -07:00
Howard Mao
64991d3947 add AXI to AHB converter 2016-05-06 11:30:50 -07:00
Howard Mao
be21f6962b make GlobalAddrHashMap a config variable 2016-05-02 18:22:43 -07:00
Andrew Waterman
e4ace55d77 Address Map refactoring 2016-04-28 16:12:35 -07:00
Andrew Waterman
c8b1f0801b Remove start address option from AddrMapEntries 
It appears to never be used, and clutters things.  The new invariant is
that AddrMaps are relative and AddrHashMaps are absolute.
 2016-04-27 14:52:05 -07:00
Andrew Waterman
d3dee2c6c6 support countSlaves on empty address maps 2016-04-27 14:51:52 -07:00
Howard Mao
6260ad56e8 stop using MMIOBase and encode cacheability in address map 2016-04-21 15:33:53 -07:00
Howard Mao
1967186a96 add id field to NastiWriteDataChannel 2016-04-19 09:39:45 -07:00
Howard Mao
42c4d1e51f add NastiMemoryDemux 2016-04-19 09:39:15 -07:00
Howard Mao
0bf8d07aba make AtosSerializedIO clock divisible 2016-04-19 09:39:15 -07:00
Howard Mao
1dc8af894e fix serializer/deserializer and add Atos serdes/desser 2016-04-19 09:39:15 -07:00
Howard Mao
d66d8f0cd4 fix SMI converter 2016-04-01 18:32:15 -07:00
Howard Mao
015992bc9e no longer need MIFMasterTagBits 2016-03-28 12:24:11 -07:00
Howard Mao
34852e406d fix bug in NastiRouter 2016-03-28 12:22:43 -07:00
Eric Love
db09f310a1 Define MIFMasterTagBits as # bits a master can *use* in tag 2016-03-11 16:48:13 -08:00
Howard Mao
4f5b1da58b add a resp_len helper to AtosRequest 2016-02-23 16:24:32 -08:00
Howard Mao
db3b2c264c Add constructors, converters, and serdes for AXI tunneled over SERDES (AtoS) 2016-02-23 16:24:32 -08:00
Howard Mao
fbd66ac87b expose a count in MultiWidthFifo 2016-02-19 11:20:43 -08:00
Howard Mao
5241ee6442 add multi-width FIFO 2016-02-19 11:20:43 -08:00
Palmer Dabbelt
770f2742de Make NastiMemorySelector a subtype of NastiInterconnect 
When RocketChip has a single memory configuration I want to ensure no extra
hardware is being generated by only instantiating a NastiMemoryInterconnect
rather than a NastiMemorySelector, which I believe will insert a Mux with 0
when there is only one config (because there aren't any 0-width wires allowed).
 2016-02-17 10:41:01 -08:00
Palmer Dabbelt
6b39db8ce6 Add "NastiMemorySelector", a memory interconnect 
On Hurricane we want to be able to support multiple memory channels but have a
fallback to fewer, since the full configuration is going to require a
complicated FPGA setup.  This adds another sort of interconnect that can switch
between having different numbers of top-level memory channels active at chip
boot time.

This interconnect is a bit funny: changing the select input when there is
memory traffic is a bad idea.  This is fine for this use case, since we really
only care about changing the memory configuration at boot time -- since it'll
scramble the memory of the machine it's not so useful, anyway.

The advantage is that we don't have to have a full 8x8 Nasti crossbar in our
chip, which would be fairly expensive.  Changing the crossbar would garble
memory as well, so it's not like it would add any extra functionality.
 2016-02-16 23:59:01 -08:00
Howard Mao
fef8a2d862 make sure NastiIOStreamIOConverter does not depend on external last signal 2016-02-15 09:48:35 -08:00
Andrew Waterman
b4856da819 Merge pull request #6 from ucb-bar/chisel3 
Chisel 3 Support
 2016-02-05 17:15:49 -08:00
Palmer Dabbelt
62257e0b04 Uncomment MemSerializedIO.cloneType() 
Not sure why this was commented, but when I build this against Chisel3 it fails
without this override.
 2016-02-04 15:28:46 -08:00
Palmer Dabbelt
be424633c1 Improve ParamaterizedBundle.cloneType()'s error messages 
Without this it's really hard to read the IllegalArgumentException that you get
if you subclass ParamaterizedBundle and don't define a matching cloneType().
 2016-02-04 15:26:42 -08:00
Howard Mao
60d9291cb5 rename external to nastiExternal to avoid name conflicts 2016-02-02 13:14:04 -08:00