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82 Commits

Author SHA1 Message Date
Ross Thompson
be8e0eee1b Removed TrapM from the LSU and IFU. TrapM is replaced with FlushW for both. (Don't like this for the IFU). 
FlushW prevents writting the cache, dtim, and bus state.  FlushW still gates HTRANS.
FlushW does not impact the mealy outputs of the cache and bus FSMs and hazard is updated to
not stall W if we get a trap.
 2022-11-07 15:50:55 -06:00
Ross Thompson
44171c342d Reduced complexity of logic supressing cache operations. 2022-11-01 15:23:24 -05:00
Ross Thompson
2c5847b01f Moving interlockfsm changes to a temporary branch. 
reduced complexity of cache mux controls.
 2022-10-19 15:08:23 -05:00
Ross Thompson
18e739befc Modified cache lru to not have the delayed write. 2022-10-04 15:14:58 -05:00
Ross Thompson
38edbde966 Renamed RW signals through the caches, bus interfaces, and IFU/LSU. 
CPU to $ is called LSURWM or IFURWF.
CPU to Bus is called BusRW
$ to Bus is called CacheBusRW.
 2022-09-23 11:46:53 -05:00
Ross Thompson
7f1ae039b0 Optimization. Able to remove hptw address muxes from the E stage. 2022-09-08 15:51:18 -05:00
David Harris
bc0c7d0cd8 Cleaned up SelBusWord 2022-08-25 11:18:13 -07:00
David Harris
3ba961d1a8 renamed BusBuffer to FetchBuffer 2022-08-25 10:44:39 -07:00
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
413a9bf58b Merge branch 'main' of github.com:davidharrishmc/riscv-wally into main 2022-08-01 22:09:11 -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
Katherine Parry
1bd6351e1f re-added FStore2 in Cache 2022-07-29 22:54:49 +00:00
Ross Thompson
40e7cda84a Don't use this commit yet. Untested. 2022-07-24 15:40:52 -05:00
Ross Thompson
05484c4c05 signal name cleanup. 2022-07-22 23:36:27 -05:00
Ross Thompson
27e32980ad cache cleanup after removing replay on cpubusy. 2022-07-22 23:30:25 -05:00
Ross Thompson
abc79c6c8e Possible improvement to cache which removes the cpu_busy states. 2022-07-22 23:20:37 -05:00
Ross Thompson
a79e5e11f6 Merged together the cache speed updates with the cache sram changes. The fstore2 changes still need to be added. 2022-07-18 23:37:18 -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
Ross Thompson
d716c25275 Fixed an issue with direct map cache's nextway logic. 
Also found a small error in the replacement policy.
 2022-07-06 18:34:30 -05:00
Madeleine Masser-Frye
d8ea12c6f4 fixed concatenation syntax 2022-07-05 22:36:54 +00:00
Katherine Parry
8f98f3bfab added rv32 double precision stores - untested 2022-06-28 21:33:31 +00:00
David Harris
7e3f75a35d Formatting cache.sv 2022-05-03 10:53:20 +00:00
Ross Thompson
ab9738d3be Hacky fix to prevent ITLBMissF and TrapM bug. 2022-04-12 17:56:23 -05:00
Ross Thompson
3dbf6790e1 Towards allowing dtim + bus. 2022-03-11 14:58:21 -06:00
Ross Thompson
81a2fbb6d2 mild cleanup. 2022-03-11 13:05:47 -06:00
Ross Thompson
11e5aad38a Moved subcachelineread inside the cache. There is some ugliness to still resolve. 2022-03-11 12:44:04 -06:00
Ross Thompson
a12016e69b Moved subcacheline read inside the cache. 2022-03-11 11:03:36 -06:00
Ross Thompson
326ecda060 removed unused parameter. 2022-03-11 10:43:54 -06:00
Ross Thompson
bdfca503fa Name cleanup. 2022-03-10 18:44:50 -06:00
Ross Thompson
d77adbd673 Signal name cleanup. 2022-03-10 18:26:58 -06:00
Ross Thompson
d5f524a15e Added byte write enables to cache SRAMs. 2022-03-10 15:48:31 -06:00
Ross Thompson
60e6c1ffa7 Moved cacheable signal into cache. 2022-03-08 16:34:02 -06:00
David Harris
48705457d5 LSU/Cache code review notes 2022-03-04 00:07:31 +00:00
Ross Thompson
fcbb577f31 Cache mods to be consistant with diagrams. 2022-02-14 12:40:51 -06:00
Ross Thompson
6e1a0af5d0 Eliminated more ports in cacheway. 2022-02-13 15:53:46 -06:00
Ross Thompson
a440bc2ac5 More cache cleanup. 2022-02-13 15:47:27 -06:00
Ross Thompson
1e7e59bdbd Changed names of signals in cache. 2022-02-13 15:06:18 -06:00
Ross Thompson
f87a6f2c63 More cache cleanup. 2022-02-13 12:38:39 -06:00
Ross Thompson
f5c4bca47e Formating improvements to cache. 2022-02-11 23:10:58 -06:00
Ross Thompson
ae2011eb07 Reduced seladr to 1 bit as second bit is same as selflush. 2022-02-11 22:41:36 -06:00
Ross Thompson
cb3d71a63d Reduced complexity of the address selection during flush. 2022-02-11 22:27:27 -06:00
Ross Thompson
a0ee2f3d99 Removed redundant signals from cache. 2022-02-11 22:23:47 -06:00
Ross Thompson
411997010b Replacement policy cleanup. 2022-02-10 11:40:10 -06:00
Ross Thompson
3a0af5d9e9 Cleanup + critical path optimizations. 2022-02-10 11:11:16 -06:00
Ross Thompson
fc68c2f09a Cache name clarifications. 2022-02-10 10:50:17 -06:00