Ross Thompson
57c366c1b2
Removed NonIROM and NonDTIM select signals from IFU and LSU.
2022-09-17 22:01:03 -05:00
Ross Thompson
cb34b7c98f
Found the ahb burst bug.
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We had instruction fetches fixed HSIZE = 2 (4 bytes) for all requests. It should be HSIZE = 3 (8 bytes) for cache fetches and 4 for uncached reads. The reason this worked for non burst is the DDR4 memory controller returns the full double word even for 4 byte reads. In burst mode the second beat ending up pointing to the next 4 bytes rather than the next 8 bytes.
2022-09-17 20:30:01 -05:00
Ross Thompson
7f1ae039b0
Optimization. Able to remove hptw address muxes from the E stage.
2022-09-08 15:51:18 -05:00
Ross Thompson
eae56a890c
marked possible improvement to ahb bus fsms.
2022-08-31 23:57:08 -05:00
Ross Thompson
0f2315e8a1
more renaming.
2022-08-31 14:52:06 -05:00
Ross Thompson
12d1ef2144
More renaming.
2022-08-31 14:49:08 -05:00
Ross Thompson
f2f1169a04
Renamed AHBCachebusdp to abhcacheinterface.
2022-08-31 14:12:19 -05:00
Ross Thompson
a0f681944c
More Cleanup.
2022-08-31 11:21:02 -05:00
Ross Thompson
8156109add
More cleanup.
2022-08-31 11:12:38 -05:00
Ross Thompson
89f13370e2
Removed old signals.
2022-08-31 09:50:39 -05:00
Ross Thompson
637d60b64c
Progress.
2022-08-30 14:17:00 -05:00
Ross Thompson
f5584bb41c
Modified rv32e configuration to use a true ahb bus interface in the lsu and ifu.
2022-08-29 17:04:53 -05:00
Ross Thompson
233777f744
Part way through the updated bus fsm for direct AHB in lsu/ifu + multi-manager.
2022-08-29 13:01:24 -05:00
Ross Thompson
7b76fbaa9a
Removed ignore request from busfsm.
2022-08-28 21:12:27 -05:00
Ross Thompson
122c88ee46
Created two new pma regions for dtim and irom.
2022-08-28 13:50:50 -05:00
Ross Thompson
dd7736cb93
Possible fix.
2022-08-28 13:10:47 -05:00
David Harris
f2517f8290
Preliminary work to make DTIM and Bus compatible. Not yet working because accesses to bus are causing illegal address faults on the bus.
2022-08-27 20:31:09 -07:00
David Harris
812158aeee
Replaced DTIM and IROM with DTIM_SUPPORTED, IROM_SUPPORTED, and base and range for each
2022-08-26 20:26:12 -07:00
David Harris
5f37e16b62
Fixed rv32e LSU and IFU issues
2022-08-25 20:02:38 -07:00
Ross Thompson
8c8b95ecf5
Finally resolved the issues with the rv32ic and rv64ic configurations.
2022-08-25 16:00:55 -05:00
Ross Thompson
5c2bc20dbd
Almost fixed issues with irom and dtim address selection.
2022-08-25 15:52:25 -05:00
Ross Thompson
f67010c688
Merge branch 'main' of github.com:davidharrishmc/riscv-wally into main
2022-08-25 14:40:52 -05:00
David Harris
bc0c7d0cd8
Cleaned up SelBusWord
2022-08-25 11:18:13 -07:00
David Harris
c442dea173
Removed M sufix from busdp signals
2022-08-25 11:13:01 -07:00
David Harris
48f346baf8
Renamed LSUFunct3M to Funct3 in busdp
2022-08-25 11:08:12 -07:00
David Harris
9bada9c14a
Renaming LSU signals from busdp
2022-08-25 11:05:10 -07:00
David Harris
3ba961d1a8
renamed BusBuffer to FetchBuffer
2022-08-25 10:44:39 -07:00
David Harris
dda3b441d7
Continued busdp/ebu simplification
2022-08-25 10:20:02 -07:00
David Harris
aba914ea5e
Renamed AHB signals coming out of LSU to LSH_<AHBNAME>
2022-08-25 09:52:08 -07:00
Ross Thompson
e605ef57dc
BROKEN. Don't use this commit.
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Issue running cacheless with bus.
2022-08-25 11:02:46 -05:00
David Harris
ae0702d129
Renamed DCache to Cache in busdp/busfsm signal interface
2022-08-25 06:21:22 -07:00
David Harris
1206b388c7
Replaced dtim with rom-based IROM in IFU. Moved cache control signals out of DTIM and IROM
2022-08-25 04:06:27 -07:00
Ross Thompson
51adf6cba9
Modified the lsu/ifu memory configurations.
2022-08-24 12:35:15 -05:00
Ross Thompson
3b07584403
Updated the names of the *WriteDataM inside the LSU to more meaningful names.
...
Moved the FWriteDataMux so that the bus and dtim both get fpu stores.
Modified the PMA to disallow double sized reads when XLEN=32.
2022-08-23 10:34:39 -05:00
Ross Thompson
ebe4339953
Updated fpga test bench.
...
Solved read delay cache bug. Introduced during cache optimizations.
2022-08-21 15:59:54 -05:00
Ross Thompson
2ba390adf4
Possible reduction of ignorerequest.
2022-08-19 18:07:44 -05:00
Ross Thompson
517c0f6c35
Changed signal names.
2022-08-17 16:12:04 -05:00
Ross Thompson
f6e5746e59
Better name for LSUBusWriteCrit. Changed to SelLSUBusWord.
2022-08-17 16:09:20 -05:00
Ross Thompson
57fcf0ef79
Fixed fstore2 in cache?
2022-08-01 22:04:44 -05:00
Ross Thompson
3cd8404917
Replaced LOGWPL with LOGBWPL (Bus words per line) and LOGCWPL (cache words per line). Replaced with wordlen/8 bytemask.
2022-08-01 21:08:14 -05:00
Ross Thompson
05484c4c05
signal name cleanup.
2022-07-22 23:36:27 -05:00
Katherine Parry
62205ebb3b
renamed FLoad2 to FStore2
2022-07-09 00:26:45 +00:00
Katherine Parry
97e7e619d9
moved fpu ieu write data mux to lsu
2022-07-08 23:56:57 +00:00
Madeleine Masser-Frye
ad29e19a27
fixed width mismatch for rv64 ieuadrM and readdatawordM
2022-07-06 22:39:35 +00:00
Katherine Parry
8f98f3bfab
added rv32 double precision stores - untested
2022-06-28 21:33:31 +00:00
slmnemo
be658d3933
Reworked AHB fsm to support one cycle latency read and writes, renamed key signals to better reflect their use, and fixed HTRANS errors
2022-06-08 15:03:15 -07:00
slmnemo
a5aa75e5de
Merge branch 'main' into cacheburstmode
2022-06-08 02:21:33 +00:00
slmnemo
1d22fc707a
Added lock signal to ensure AHB speaks with the right bus
2022-06-08 02:19:21 +00:00
slmnemo
90c5e5d319
Reworked bus to handle burst interfacing
2022-06-07 11:22:53 +00:00
David Harris
129fab3794
Provided sfencevmaM to hazard unit and renamed TLBFlush signals to sfencevma going into LSU/IFU. Preparing for SFENCE.VMA to flush the pipeline, but that is not yet working.
2022-06-02 14:18:55 +00:00
