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180 Commits

Author SHA1 Message Date
Ross Thompson
b9fadc11c3 Replaced LSU data replication with 0 extention. 2022-08-23 10:43:47 -05:00
Ross Thompson
cd0da2e3b3 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
David Harris
7c91ed38a3 LSU minor edits 2022-08-23 07:35:47 -07:00
David Harris
34eece10b8 Finished FPU-LSU interface cleanup 2022-08-22 13:43:04 -07:00
David Harris
bf54c1c868 Simplified FPU-LSU interface to skip IEU 2022-08-22 13:29:20 -07:00
Ross Thompson
21526957cf Updated fpga test bench. 
Solved read delay cache bug.  Introduced during cache optimizations.
 2022-08-21 15:59:54 -05:00
Ross Thompson
96d6218078 Possible reduction of ignorerequest. 2022-08-19 18:07:44 -05:00
Ross Thompson
5301444a61 Changed signal names. 2022-08-17 16:12:04 -05:00
Ross Thompson
970a90dd72 Better name for LSUBusWriteCrit. Changed to SelLSUBusWord. 2022-08-17 16:09:20 -05:00
Ross Thompson
f7e64fcd69 Fixed fstore2 in cache? 2022-08-01 22:04:44 -05:00
Ross Thompson
b8356c7449 Replaced swbytemask with swbytemaskword (1 liner). Credit to David Harris. 2022-08-01 21:12:25 -05:00
Ross Thompson
171cf7413b 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
5d9dab6149 pulled swbbytemask out of subword write. 2022-08-01 20:48:45 -05:00
Ross Thompson
5cd6c8069d signal name cleanup. 2022-07-22 23:36:27 -05:00
Katherine Parry
452b017f9a found the bug in the store modification 2022-07-12 22:42:19 +00:00
Katherine Parry
ca4fe08fd9 renamed FLoad2 to FStore2 2022-07-09 00:26:45 +00:00
Katherine Parry
cd53ae67d9 moved fpu ieu write data mux to lsu 2022-07-08 23:56:57 +00:00
David Harris
d73645944f APB CLINT passing regression 2022-07-05 15:51:35 +00:00
Katherine Parry
6baded9121 added rv32 double precision stores - untested 2022-06-28 21:33:31 +00:00
Katherine Parry
254ebf478e added fld in rv32 - needs testing 2022-06-20 22:53:13 +00:00
slmnemo
054cf5f7b0 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
284e0395a0 Merge branch 'main' into cacheburstmode 2022-06-08 02:21:33 +00:00
slmnemo
2d76953d42 Added lock signal to ensure AHB speaks with the right bus 2022-06-08 02:19:21 +00:00
slmnemo
73e0c1c07f Reworked bus to handle burst interfacing 2022-06-07 11:22:53 +00:00
David Harris
c7ec9282fe 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
slmnemo
847c7930c4 added LSUBurstDone signal to signal when a burst has finished 2022-05-26 16:29:13 -07:00
slmnemo
08430a1e85 added burst size signals to the IFU, EBU, LSU, and busdp 2022-05-25 18:02:50 -07:00
David Harris
5670f77de2 More unused signal cleanup 2022-05-12 15:21:09 +00:00
David Harris
e2e63ca9a8 Clean up unused signals 2022-05-12 14:49:58 +00:00
David Harris
4f1b0fdc64 Preliminary support for big endian modes. Regression passes but no big endian tests written yet. 2022-05-08 06:46:35 +00:00
David Harris
22842816a8 LSU name cleanup 2022-04-18 03:18:38 +00:00
David Harris
c07b9d1722 Renamed FinalAMOWriteDataM to AMOWriteDataM 2022-04-18 01:30:03 +00:00
Ross Thompson
bfc68bef69 Fixed possible bugs in LRSC. 2022-04-16 14:45:31 -05:00
Ross Thompson
396f697d2f Hacky fix to prevent ITLBMissF and TrapM bug. 2022-04-12 17:56:23 -05:00
Ross Thompson
fe896bff8e Found a way to remove a bus input into MMU. PAdr can be made into VAdr by selecting the faulting virtual address when writing the DTLB. 2022-03-24 23:47:28 -05:00
Ross Thompson
71aad2d213 Moved WriteDataM register into LSU. 2022-03-23 14:17:59 -05:00
Ross Thompson
8f74fd2a50 Merge branch 'main' of github.com:davidharrishmc/riscv-wally into main 2022-03-23 14:10:38 -05:00
Ross Thompson
b2487f4b72 Merge branch 'main' of github.com:davidharrishmc/riscv-wally into main 2022-03-22 21:28:50 -05:00
Ross Thompson
ca8fb45367 Added comment about needed fix to misaligned fault. 2022-03-22 16:52:07 -05:00
Ross Thompson
ee4b38dce3 dtim writes are supressed on non cacheable operation. 2022-03-12 00:46:11 -06:00
Ross Thompson
86cc758354 cleanup of ram.sv 2022-03-11 18:09:22 -06:00
Ross Thompson
67ff8f27f4 Can now support the following memory and bus configurations. 
1. dtim/irom only
2. bus only
3. dtim/irom + bus
4. caches + bus
 2022-03-11 15:18:56 -06:00
Ross Thompson
9dce2a0679 Towards allowing dtim + bus. 2022-03-11 14:58:21 -06:00
Ross Thompson
b7a680ec2a Moved subcachelineread inside the cache. There is some ugliness to still resolve. 2022-03-11 12:44:04 -06:00
Ross Thompson
a18f06c20b Moved subcacheline read inside the cache. 2022-03-11 11:03:36 -06:00
Ross Thompson
52cc852600 removed unused parameter. 2022-03-11 10:43:54 -06:00
Ross Thompson
7f0c5cc847 atomic cleanup. 2022-03-10 18:56:37 -06:00
Ross Thompson
257015a2df Name changes. 2022-03-10 18:50:03 -06:00
Ross Thompson
6d914def08 Name cleanup. 2022-03-10 18:44:50 -06:00
Ross Thompson
63b1ea88c9 Signal name cleanup. 2022-03-10 18:26:58 -06:00
Ross Thompson
396c97fc36 Byte write enables are passing all configs now. 2022-03-10 17:26:32 -06:00
Ross Thompson
d8e71e8e35 Progress on the path to getting all configs working with byte write enables. 2022-03-10 17:02:52 -06:00
Ross Thompson
67ef46ea92 Partially working byte write enables. Works for cache, but not dtim or bus only. 2022-03-10 16:11:39 -06:00
Ross Thompson
7a129c75cd Added byte write enables to cache SRAMs. 2022-03-10 15:48:31 -06:00
Ross Thompson
0310fe858f Comments. 2022-03-08 18:05:25 -06:00
Ross Thompson
3ec32d7ce8 Removed unused signal. 2022-03-08 16:58:26 -06:00
Ross Thompson
7b96b3f73c Moved cacheable signal into cache. 2022-03-08 16:34:02 -06:00
David Harris
2cea3349ad LSU/Cache code review notes 2022-03-04 00:07:31 +00:00
Ross Thompson
59f04f2518 Minor busdp cleanup. 2022-02-22 17:28:26 -06:00
Ross Thompson
456a54166a Minor cleanup of lsu. 2022-02-21 12:46:06 -06:00
Ross Thompson
5d9ad011d2 Moved mux into lsuvirtmem. 2022-02-21 09:31:29 -06:00
Ross Thompson
a60332b455 Minor changes to LSU. 2022-02-19 14:38:17 -06:00
Ross Thompson
d152733a17 Rough implementation passing regression test with hptw atomic writes to memory. 2022-02-17 14:46:11 -06:00
Ross Thompson
565ca4e4a3 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
beac362364 Moved a few muxes around after sww changes. 2022-02-16 15:43:03 -06:00
Ross Thompson
6a2bcfcd01 cleanup of signal names. 2022-02-16 15:29:08 -06:00
Ross Thompson
bd7343b791 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
Ross Thompson
7ffbc6b2ab Changed names of signals in cache. 2022-02-13 15:06:18 -06:00
Ross Thompson
1c83914662 Fixed bug. 
It was possible for DTLBMissM to prevent a dcache flush.
 2022-02-11 14:00:01 -06:00
Ross Thompson
f716cce832 Replacement policy cleanup. 2022-02-10 11:40:10 -06:00
Ross Thompson
104a9acf81 Cleanup. 2022-02-10 11:27:15 -06:00
Ross Thompson
fdb4f909fc Cleanup + critical path optimizations. 2022-02-10 11:11:16 -06:00
Ross Thompson
36ab78ef3b Removed all possilbe paths to PreSelAdr from TrapM. 2022-02-09 19:20:10 -06:00
Ross Thompson
8a2ee22395 Finished merge. 2022-02-08 11:36:24 -06:00
Ross Thompson
ea84211ff9 Removed unused ports from caches and buses. 2022-02-04 22:52:51 -06:00
Ross Thompson
011ad09341 Cleanup. 2022-02-04 22:40:51 -06:00
Ross Thompson
4074f695e0 Moved the hwdata mux back into the busdp. 2022-02-04 22:39:13 -06:00
Ross Thompson
40eb055861 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
Ross Thompson
290430cda8 Moved the sub cache line read logic to lsu/ifu. 2022-02-04 20:42:53 -06:00
David Harris
a6708ed887 cache cleanup 2022-02-03 15:36:11 +00:00
David Harris
38bbe23d14 More config file cleanup; 32ic tests broken 2022-02-03 01:08:34 +00:00
David Harris
da8819d64b changed DMEM and IMEM configurations to support BUS/TIM/CACHE 2022-02-03 00:41:09 +00:00
Ross Thompson
e4ee630a3e cleanup. 2022-01-31 13:29:04 -06:00
Ross Thompson
c9a163b8fd Repaired linux-wave.do 2022-01-31 12:54:18 -06:00
Ross Thompson
f4e62bcb54 Cleanup busdp. 2022-01-31 12:17:07 -06:00
Ross Thompson
31da37dd0f Moved lsu virtual memory logic into separate module. 2022-01-31 11:56:03 -06:00
Ross Thompson
9cd502d0af Encapsulated dtim. 2022-01-31 11:23:55 -06:00
Ross Thompson
c939eb20eb Removed unused signals in the LSU. 2022-01-31 10:35:35 -06:00
Ross Thompson
5fe30ff8a9 Moved atomic logic to own module. 2022-01-31 10:28:12 -06:00
Ross Thompson
a4f6653cd8 Encapsulated the bus data path into a separate module. 2022-01-31 10:15:48 -06:00
Ross Thompson
ac50a36aac LSU and IFU cleanup. 2022-01-28 15:26:06 -06:00
Ross Thompson
42d60235f0 Clean up of mmu instances in IFU and LSU. 2022-01-28 14:02:05 -06:00
Ross Thompson
862bf2faae 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
d15cb64bdf Relocated the misalignment faults. 2022-01-27 16:03:00 -06:00
David Harris
7f91170bab Comments in LSU code about restructuring 2022-01-27 15:53:59 +00:00
Ross Thompson
42ef1e22e5 1. Modified the cache so it can handle the reset delay internally. This removes the mux from the IFU. 
2. Removed the write address delay from simpleram.sv
3. Fixed rv32tim and rv32ic mode to handle missalignment correctly.
4. Added imperas32i and imperas32c to rv32tim mode.
 2022-01-26 18:23:39 -06:00
David Harris
8d04e83c9f simpleram simplification 2022-01-25 19:46:13 +00:00
David Harris
a86a9f5c2a simpleram simplification 2022-01-25 18:26:31 +00:00
David Harris
7ad2eb009a simpleram address simplification 2022-01-25 18:00:50 +00:00
David Harris
6a555032eb simpleram clk and reset simplification 2022-01-25 17:34:15 +00:00