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345 Commits

Author SHA1 Message Date
Ross Thompson
97d64201f7 Fixed bug with DAPageFault being wrong when HPTW writes not supported. 2022-02-23 10:54:34 -06:00
Ross Thompson
53f13d4cbc More spillsupport more structual. 2022-02-23 10:27:14 -06:00
Ross Thompson
c23f6c7d90 Fixed bug with spill support and Instruction DA Page Faults. 2022-02-23 10:16:12 -06:00
Ross Thompson
62e1a97287 Added generates to pcnextf muxes for privileged and caches. 2022-02-22 22:45:00 -06:00
Ross Thompson
6a52f95cc8 Minor busdp cleanup. 2022-02-22 17:28:26 -06:00
Ross Thompson
59a2c09c5e Merge branch 'main' of github.com:davidharrishmc/riscv-wally into main 2022-02-22 14:45:53 -06:00
Ross Thompson
90be3d4360 Clarified interlockfsm. 2022-02-22 11:31:28 -06:00
bbracker
b8fd06576c fix lint bugs in PLIC and UART 2022-02-22 05:04:18 +00:00
bbracker
a6047697c3 Merge branch 'main' of https://github.com/davidharrishmc/riscv-wally into main 2022-02-22 04:27:50 +00:00
bbracker
e7934c585a change RX side of UART to aslo be LSB-first 2022-02-22 03:34:08 +00:00
Ross Thompson
3a29504279 Added some clearity to lsuvirtmem.sv. 2022-02-21 17:20:58 -06:00
Ross Thompson
ca59778c5a Annotated IFU for mux changes. 2022-02-21 17:20:34 -06:00
Ross Thompson
2f711fb642 Changed HPTWRead/HPTWWrite to be HPTWRW to be similar to MemRW. 2022-02-21 16:54:38 -06:00
Ross Thompson
0c65ea96d8 Cleaned up names in lsuvirtmem. 2022-02-21 16:44:30 -06:00
Ross Thompson
56fc6d0d7c Minor cleanup of lsu. 2022-02-21 12:46:06 -06:00
Ross Thompson
f48b12b089 Moved mux into lsuvirtmem. 2022-02-21 09:31:29 -06:00
Ross Thompson
cbf4395457 Merge branch 'main' of github.com:davidharrishmc/riscv-wally into main 2022-02-21 09:06:09 -06:00
Ross Thompson
ae06785b9f Minor changes to LSU. 2022-02-19 14:38:17 -06:00
David Harris
20a5798f43 Merge branch 'main' of https://github.com/davidharrishmc/riscv-wally into main 2022-02-18 23:08:47 +00:00
David Harris
6a0ffff05d Removed problematic warning about reaching default state in HPTW 2022-02-18 23:08:40 +00:00
Ross Thompson
6cd9d84e7f New config option to enable hptw writes to PTE in memory to update Access and Dirty bits. 2022-02-17 17:19:41 -06:00
Ross Thompson
ad237b3ce5 Accidentally cleared dirty bit when setting access bit in hptw. 2022-02-17 16:20:20 -06:00
Ross Thompson
cbac34943c Merge branch 'main' of github.com:davidharrishmc/riscv-wally into main 2022-02-17 14:49:37 -06:00
Ross Thompson
0eec096474 Rough implementation passing regression test with hptw atomic writes to memory. 2022-02-17 14:46:11 -06:00
David Harris
f3c7025ade Started make allsynth to try many experiments 2022-02-17 17:57:02 +00:00
Ross Thompson
2fc7dc3e57 Fixed a bunch of the virtual memory changes. Now supports atomic update of PTE in memory concurrent with TLB. 2022-02-17 10:04:18 -06:00
Ross Thompson
62f5f1e622 Broken state. address translation not working after changes to hptw to support atomic updates to PT. 2022-02-16 23:37:36 -06:00
Ross Thompson
c9e33208e3 Moved a few muxes around after sww changes. 2022-02-16 15:43:03 -06:00
Ross Thompson
71ed49bf2b cleanup of signal names. 2022-02-16 15:29:08 -06:00
Ross Thompson
6dc12b4968 Merge branch 'main' of github.com:davidharrishmc/riscv-wally into main 2022-02-16 15:22:35 -06:00
Ross Thompson
27042f028e Modified lsu and uncore so only 1 sww is present. The sww is in the LSU if there is a cache or dtim. uncore.sv contains the sww if there is no local memory in the LSU. This is necessary as the subword write needs the read data to be valid and that read data is not aviable in the correct cycle in the LSU if there is no dtim or cache. Muxing could be done to provide the correct read data, but it adds muxes to the critical path. 2022-02-16 15:22:19 -06:00
David Harris
c23db6a31e Cleaned warning on HPTW default state 2022-02-16 17:40:13 +00:00
David Harris
01fa5c94bd Register file comments about reset 2022-02-16 17:21:05 +00:00
Ross Thompson
c56c4db47f Merge branch 'main' of github.com:davidharrishmc/riscv-wally into main 2022-02-16 09:48:16 -06:00
David Harris
aa990be959 removed csrn and all of its outputs because depricated 2022-02-15 19:59:29 +00:00
David Harris
d8170e9dd3 Mostly removed N_SUPPORTED 2022-02-15 19:50:44 +00:00
David Harris
ed8ac3d881 Just needed to recompile - all good. Now removed uretM because N-mode is depricated 2022-02-15 19:48:49 +00:00
David Harris
5ef8f6bc7e Removed depricated N-mode support and SI/EDELEG registers. rv64gc_wally64priv tests are failing, but seem to be failing before this change. 2022-02-15 19:20:41 +00:00
Ross Thompson
fcbb577f31 Cache mods to be consistant with diagrams. 2022-02-14 12:40:51 -06:00
David Harris
caa4d83e57 t push 
Merge branch 'main' of https://github.com/davidharrishmc/riscv-wally into main
 2022-02-14 01:22:22 +00:00
Ross Thompson
86e117ea77 Merge branch 'main' of github.com:davidharrishmc/riscv-wally into main 2022-02-13 18:21:15 -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
David Harris
f5678e25db Synthesis cleanup 2022-02-12 06:25:12 +00:00
David Harris
b537df2651 Synthesis script cleanup, eliminated privileged instructiosn from controller when ZICSR_SUPPORTED = 0 2022-02-12 05:50:34 +00:00
Ross Thompson
f5c4bca47e Formating improvements to cache. 2022-02-11 23:10:58 -06:00
Ross Thompson
6fa9490d0b More cache simplifications. 2022-02-11 22:54:05 -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
aa04778d0b Cache fsm simplifications. 2022-02-11 15:16:45 -06:00
Ross Thompson
e6c8cfd49b Removed STATE_CPU_BUSY_FINISH_AMO from cache. This is redundant with STATE_CPU_BUSY. 2022-02-11 15:09:00 -06:00
Ross Thompson
83adacbee3 Simplified cache fsm. 2022-02-11 14:54:57 -06:00
Ross Thompson
c8e6884926 Fixed bug. 
It was possible for DTLBMissM to prevent a dcache flush.
 2022-02-11 14:00:01 -06:00
Ross Thompson
20456097cd Merge branch 'main' of github.com:davidharrishmc/riscv-wally into main 2022-02-11 10:47:21 -06:00
Ross Thompson
2f2a4f4500 Fixed subtle and infrequenct bug. 
Loading buildroot at 483M instructions started with a spill + ITLBMiss.  The spillsupport logic allowed transition to the second access only after the bus/cache completed the first operation.  However the BusStall was suppressed if ITLBMissF occurs resulting in the spillfsm advancing to the second operation.  Now the spill logic also takes in ITLBMissF and prevents the early transition to the second access.
 2022-02-11 10:46:06 -06:00
David Harris
15fb7fee60 Cleaned up synthesis warnings 2022-02-11 01:15:16 +00:00
Ross Thompson
fc6dc52618 Fixed bugs in ifu spills and missing reset on bus data register. 2022-02-10 18:11:57 -06:00
Ross Thompson
f23817bf69 Replacement policy cleanup. 2022-02-10 11:42:40 -06:00
Ross Thompson
411997010b Replacement policy cleanup. 2022-02-10 11:40:10 -06:00
Ross Thompson
382d5fab0f Cleanup. 2022-02-10 11:27:15 -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
Ross Thompson
e00d404154 More cache cleanup. 2022-02-10 10:43:37 -06:00
Ross Thompson
65803ebe98 structural muxes. 2022-02-09 19:36:21 -06:00
Ross Thompson
2a989e6d05 More cache cleanup. 2022-02-09 19:29:15 -06:00
Ross Thompson
3b8ad3f7c7 Cleaned up comments. 2022-02-09 19:21:35 -06:00
Ross Thompson
911ee36b22 Removed all possilbe paths to PreSelAdr from TrapM. 2022-02-09 19:20:10 -06:00
Ross Thompson
01126535db Annotated the final changes required to move sram address off the critial path. 2022-02-08 18:17:31 -06:00
Ross Thompson
7133e790ea Merge branch 'main' of github.com:davidharrishmc/riscv-wally into main 2022-02-08 17:52:15 -06:00
Ross Thompson
498388c636 Cache cleanup write enables. 2022-02-08 17:52:09 -06:00
Ross Thompson
8a49ec90d0 Merge branch 'main' of github.com:davidharrishmc/riscv-wally into main 2022-02-08 15:43:18 -06:00
Ross Thompson
e0a605e95d Cleanup IFU. 2022-02-08 14:54:53 -06:00
Ross Thompson
d1d014bf1d Merge branch 'main' of github.com:davidharrishmc/riscv-wally into main 2022-02-08 14:47:15 -06:00
Ross Thompson
13561c67bd Merge branch 'main' of github.com:davidharrishmc/riscv-wally into main 2022-02-08 14:22:19 -06:00
Ross Thompson
cecbb3362d rv32e works for now. Still need to optimize. 2022-02-08 14:21:55 -06:00
Ross Thompson
39149c618f Moved some muxes back into the bp. 2022-02-08 14:17:44 -06:00
David Harris
3e16730226 RAM simplification 2022-02-08 20:15:23 +00:00
Ross Thompson
d5d9bb9d4d Temporary commit which gets the no branch predictor implementation working. 2022-02-08 14:13:55 -06:00
Ross Thompson
3cd067ac6a Finished merge. 2022-02-08 11:36:24 -06:00
Ross Thompson
492c1473f3 Preparing to make a major change to the cache's write enables. 2022-02-08 09:47:01 -06:00
David Harris
096242a6d8 Merged TIM and regular testbenches. RV32e now working and back in regression. 2022-02-08 12:18:13 +00:00
Ross Thompson
190d619940 cachefsm cleanup. 2022-02-07 22:09:56 -06:00
Ross Thompson
ca459a5915 Removed VDWriteEnable. 2022-02-07 21:59:18 -06:00
Ross Thompson
494802b2e1 more partial cleanup of fsm and write enables. 2022-02-07 17:41:56 -06:00
Ross Thompson
23a60d9875 Progress towards simplifying the cache's write enables. 2022-02-07 17:23:09 -06:00
Ross Thompson
fcd43ea004 more cleanup. 2022-02-07 13:29:19 -06:00
Ross Thompson
e72d54ea98 More cachefsm cleanup. 2022-02-07 13:19:37 -06:00
Ross Thompson
a6a7779ec0 More cachefsm cleanup. 2022-02-07 12:30:27 -06:00
Ross Thompson
7f732eb571 More cachefsm cleanup. 2022-02-07 11:16:20 -06:00
Ross Thompson
be67c4d559 More cachefsm cleanup. 2022-02-07 11:12:28 -06:00
Ross Thompson
f1781c6bc8 More cachefsm cleanup. 2022-02-07 10:54:22 -06:00
Ross Thompson
b89ce18473 Cache cleanup. 2022-02-07 10:43:58 -06:00
Ross Thompson
6f4a321d31 More cachfsm cleanup. 2022-02-07 10:33:50 -06:00
David Harris
60c3cdad3a Reverted cache change 2022-02-07 14:47:20 +00:00
David Harris
c21eb67a07 Cache syntax cleanup 2022-02-07 14:43:24 +00:00
Ross Thompson
8bcaadda6b More cachefsm cleanup. 2022-02-06 21:50:44 -06:00
Ross Thompson
347e9228f8 started cachefsm cleanup. 2022-02-06 21:39:38 -06:00
David Harris
0feb624bab Added E tests to wally-riscv-arch-test rv32i_m/I and fixed cyclic path in rv32e configuration 2022-02-06 01:22:40 +00:00
Ross Thompson
308cc34d6f Added config to allow using the save/restore or replay implementation to handle sram clocked read delay. 2022-02-04 23:49:07 -06:00
Ross Thompson
1766c0f5ba Removed unused ports from caches and buses. 2022-02-04 22:52:51 -06:00
Ross Thompson
dce4f8a0e5 Cleanup. 2022-02-04 22:40:51 -06:00
Ross Thompson
53551ab533 Moved the hwdata mux back into the busdp. 2022-02-04 22:39:13 -06:00
Ross Thompson
34cf77797a Merged together the two sub cache line read muxes. 
One mux was used for loads and the other for eviction.
 2022-02-04 22:30:04 -06:00
David Harris
23868a33bc Temporarily changed rv32e config to use TIM, but it still fails. Added rv32e tests. 2022-02-05 04:16:18 +00:00
Ross Thompson
c846368537 Moved the sub cache line read logic to lsu/ifu. 2022-02-04 20:42:53 -06:00
Ross Thompson
f6f0539e10 Got separate module for the sub cache line read. 2022-02-04 20:23:09 -06:00
Ross Thompson
ceb2cc30b9 Second optimization of save/restore. 2022-02-04 14:35:12 -06:00
Ross Thompson
498c2b589a Optimization of cache save/restore. 2022-02-04 14:21:04 -06:00
Ross Thompson
83fdedcec6 Working first cut of the cache changes moving the replay to a save/restore. 
The current implementation is too expensive costing (tag+linelen)*numway flip flops and muxes.
 2022-02-04 13:31:32 -06:00
David Harris
c3122ce214 sram1rw cleanup 2022-02-03 18:03:22 +00:00
David Harris
0e1d784b60 sram1rw cleanup 2022-02-03 17:50:23 +00:00
David Harris
eb8dd5e7d7 cachereplacementpolicy cleanup 2022-02-03 17:19:14 +00:00
David Harris
5f7326368e cachereplacementpolicy cleanup 2022-02-03 17:18:48 +00:00
David Harris
9b6a4d1d52 cacheway cleanup 2022-02-03 16:52:22 +00:00
David Harris
7a8cc5ef21 cacheway cleanup 2022-02-03 16:33:01 +00:00
David Harris
0fbc32204c cacheway cleanup 2022-02-03 16:07:55 +00:00
David Harris
c22f7eb11c cacheway cleanup 2022-02-03 16:00:57 +00:00
David Harris
e92461159d cache cleanup 2022-02-03 15:36:11 +00:00
David Harris
9e0055cbb9 More config file cleanup; 32ic tests broken 2022-02-03 01:08:34 +00:00
David Harris
bdf1a8ba73 changed DMEM and IMEM configurations to support BUS/TIM/CACHE 2022-02-03 00:41:09 +00:00
David Harris
c12407ba6a Removed Busybear dependencies 2022-02-02 20:28:21 +00:00
Ross Thompson
910d16b642 More cleanup of IFU. 2022-02-01 14:32:27 -06:00
Ross Thompson
a9b4f9b1e7 Merge branch 'main' of github.com:davidharrishmc/riscv-wally into main 2022-02-01 10:50:38 -06:00
Ross Thompson
99bb281944 Updated fpga's bootloader to reflect the changes to the gpio address change. 2022-02-01 10:43:24 -06:00
Ross Thompson
dce9ee12b4 IFU and LSU now share the same busdp module. 2022-01-31 16:25:41 -06:00
Ross Thompson
a04aa283cb partial ifu cleanup. 2022-01-31 16:08:53 -06:00
Ross Thompson
b05abc1795 cleanup. 2022-01-31 13:29:04 -06:00
Ross Thompson
d2ab17e1af Repaired linux-wave.do 2022-01-31 12:54:18 -06:00
Ross Thompson
3475e142a5 Repaired wavefile and fixed modelsim warning. 2022-01-31 12:34:17 -06:00
Ross Thompson
1476a79ea2 Merge branch 'main' of github.com:davidharrishmc/riscv-wally into main 2022-01-31 12:17:37 -06:00
Ross Thompson
fa8914a830 Cleanup busdp. 2022-01-31 12:17:07 -06:00
Ross Thompson
7c3d6bbdb4 Moved lsu virtual memory logic into separate module. 2022-01-31 11:56:03 -06:00
Ross Thompson
e35a8299ec Encapsulated dtim. 2022-01-31 11:23:55 -06:00
Ross Thompson
dbe40856a2 Removed unused signals in the LSU. 2022-01-31 10:35:35 -06:00
Ross Thompson
bfbc31d184 Moved atomic logic to own module. 2022-01-31 10:28:12 -06:00
Ross Thompson
ef770fd183 Encapsulated the bus data path into a separate module. 2022-01-31 10:15:48 -06:00
David Harris
2d112698b7 Replaced || and && with | and & 2022-01-31 01:07:35 +00:00
Ross Thompson
d52c5b0393 LSU and IFU cleanup. 2022-01-28 15:26:06 -06:00
Ross Thompson
de0bef4f5b Updated wave.do to match the ifu/lsu changes. 2022-01-28 14:37:15 -06:00
Ross Thompson
147d71fd46 Clean up of mmu instances in IFU and LSU. 2022-01-28 14:02:05 -06:00
Ross Thompson
4a8d0cb981 Moved spills to own module. 2022-01-28 13:40:35 -06:00
Ross Thompson
7fedc6b878 Cleaned up the InstrMisalignedFault. 2022-01-28 13:19:24 -06:00
Ross Thompson
1bb8d36308 Moved all instr/load/storeamo faults to mmu with the exception of instr misaligned fault. 2022-01-27 17:11:27 -06:00
Ross Thompson
d7d7c1cb7d Relocated the misalignment faults. 2022-01-27 16:03:00 -06:00
David Harris
87aa0724a2 IFU cleanup 2022-01-27 17:18:55 +00:00
David Harris
218ff3e25d IFU cleanup 2022-01-27 16:41:57 +00:00
David Harris
1c22077841 Optimized out second adder from IFU for PC+2 2022-01-27 16:06:24 +00:00