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Commit Graph

114 Commits

Author SHA1 Message Date
Wesley W. Terpstra
eeae74e3fc nasti: include convenient clock crossing helpers 2016-07-13 14:20:25 -07:00
Wesley W. Terpstra
c33c0944be crossing: first clock crossing, the handshaker 2016-07-13 14:20:25 -07:00
Howard Mao
37fd11870c fix up ReorderQueue CAM 2016-07-13 12:11:43 -07:00
Howard Mao
c0dc09b3a1 don't use CAM in ReorderQueue if not necessary 2016-07-13 11:08:15 -07:00
Palmer Dabbelt
2f70136f90 Fix the Nasti to Smi Converter for single-word Nasti busses
There's a register that tracks what word within a Nasti transaction a
Smi response cooresponds to, since Smi itself doesn't have any
multi-word stuff.  This breaks the single-word Nasti to Smi converter
due to what's essentially a 0-width wire bug: it ends up doing something
like

  word_offset_into_nasti := nasti_address(3, 3)

when "word_offset_into_nasti" should really be a 0-bit register, but due
to some log2Up block size calculation logic it's actually a 1-bit
register.  Thus, this expression ends up grabbing a bit of the address,
which causes odd addresses to get buffered incorrectly.

My fix is to just special-case the "Nasti bus width is the same as Smi
bus width" case.
2016-07-12 09:31:21 -07:00
Howard Mao
6055482513 make sure write channel id is actually set 2016-07-07 12:12:39 -07:00
Howard Mao
bbf780725f add NastiReadIO and NastiWriteIO bundles 2016-07-06 15:13:04 -07:00
Howard Mao
96f09003f2 use options for NastiWriteDataChannel write mask 2016-07-05 16:03:25 -07:00
Wesley W. Terpstra
ed9fcea7f8 hasti: correct fix to locking 2016-06-08 16:28:30 -07:00
Wesley W. Terpstra
ad4e4f19be Revert "Don't rely on Mux1H output when no inputs are hot"
This reverts commit b912b7cd1263d7f3b63e6fcb052d9d7493d1b970.
2016-06-08 16:28:30 -07:00
Wesley W. Terpstra
3393d4362b hasti: fix test SRAM depth 2016-06-08 16:28:30 -07:00
Howard Mao
0969be8804 Revert "make sure SlowIO clock divider is initialized on reset"
This reverts commit 546aaad8cfb03e45e068733c2b694232bcf9dcdb.
2016-06-08 13:45:30 -07:00
Howard Mao
636a46c052 make sure SlowIO clock divider is initialized on reset 2016-06-08 10:02:21 -07:00
Andrew Waterman
28161cab45 Merge AddrHashMap and AddrMap 2016-06-03 13:46:53 -07:00
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
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