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1047 Commits

Author SHA1 Message Date
James E. Stine
71b48048da Added pipelined version of fpdivsqrt as well as analysis of fpdivsqrt to cut multiplier down to 60bits. 2021-10-20 12:00:41 -05:00
James E. Stine
41010aa418 Some more sanitization but will pass to legal to determine if okay on version - it is substantially different in some ways but not a legal expert on this 2021-10-19 12:09:43 -05:00
James E. Stine
a75abb04bd Modify DW02_multp to properly list the correct number of bits at the output (i.e., 2*WIDTH + 2). 2021-10-19 11:58:06 -05:00
David Harris
3bc985d230 Changed some flops to settable 2021-10-18 17:05:29 -07:00
David Harris
0516ee768b replaced flopenl with flopenr when clearing to 0 2021-10-18 16:53:18 -07:00
David Harris
398337951d Merge branch 'main' of https://github.com/davidharrishmc/riscv-wally into main 2021-10-18 15:44:31 -07:00
David Harris
00d8035836 Fixed multiplier and pointed arch tests to new path in addins 2021-10-18 15:43:59 -07:00
Ross Thompson
cd58a388e4 fixed issues with dc shell not liking modules with parameters without default values. 2021-10-18 17:24:15 -05:00
James E. Stine
37fe5e56a8 Sanitization some more on mult_cs.sv 2021-10-18 05:24:16 -05:00
James E. Stine
d0ab43e4e8 Update some on mult_cs and delete DW02_mult.v 2021-10-18 05:06:49 -05:00
James E. Stine
de7b673e34 Add hacky hand-made carry/save multiplier - will improve 2021-10-16 10:37:29 -05:00
Katherine Parry
c34633804a cvtfp module documented 2021-10-14 15:25:31 -07:00
James E. Stine
c5b99300e7 Clean up some signals - beautification onging 2021-10-14 17:12:00 -05:00
Skylar Litz
71397d5db9 Merge branch 'main' of github.com:davidharrishmc/riscv-wally into main 2021-10-13 15:38:32 -07:00
Skylar Litz
4ca4e13ba2 add StallM signal back to DivStartE control 2021-10-13 15:34:40 -07:00
James E. Stine
1dba57dce7 Update to fpdivsqrt to go on posedge as it should. Also an update to 
individual regression test for TestFloat (still needs some tweaking)
 2021-10-13 17:14:42 -05:00
Katherine Parry
b79021a73e lint warnings fixed 2021-10-12 09:45:02 -07:00
Katherine Parry
539d21645f some fpu lint warnings fixed - still working on it 2021-10-11 18:32:03 -07:00
Shreya Sanghai
0acf9fd746 made redunantmul generate DW02_multp for synopsys sythnesis 2021-10-11 11:54:39 -07:00
Shreya Sanghai
84ff2b49c7 actually added redundant mul 2021-10-11 11:29:13 -07:00
Shreya Sanghai
a1c9ffdf2b added redundant multiplier 2021-10-11 11:20:12 -07:00
David Harris
ab6a796690 Starting to optimize multiplier 2021-10-11 11:06:07 -07:00
David Harris
f1190b6ceb intdiv cleanup 2021-10-11 08:14:21 -07:00
David Harris
4139f27d10 Divider FSM simplification 2021-10-10 22:24:14 -07:00
David Harris
75c17dc372 Major reorganization of regression and simulation and testbenches 2021-10-10 15:07:51 -07:00
David Harris
a6c6b2b974 Merge branch 'main' of https://github.com/davidharrishmc/riscv-wally into main 2021-10-10 12:26:15 -07:00
David Harris
caf3c2de9b Merge branch 'main' of https://github.com/davidharrishmc/riscv-wally into main 2021-10-10 12:25:11 -07:00
bbracker
90ccd60790 simplify flopenrc's that didn't actually need to be flopenrc's 2021-10-10 12:25:05 -07:00
David Harris
43d92f2507 Divider cleanup 2021-10-10 12:24:44 -07:00
David Harris
6704e37597 Simplifying divider FSM 2021-10-10 12:21:43 -07:00
David Harris
4deae8019a Simplifying divider FSM 2021-10-10 12:21:36 -07:00
David Harris
2759f1fcb1 Moved & ~StallM from FSM into DivStartE 2021-10-10 11:49:32 -07:00
David Harris
635fe181f8 Moved divide iteration register names to M stage 2021-10-10 11:30:53 -07:00
David Harris
b713b6ca87 Simplified remainder for divide by 0 2021-10-10 11:20:07 -07:00
David Harris
6988c8c37c divider control signal simplificaiton 2021-10-10 10:55:02 -07:00
David Harris
c2bb0324c6 Removed negedge flops from divider 2021-10-10 10:41:13 -07:00
David Harris
3aa9e088c8 Simplified divider sign handling 2021-10-10 08:35:26 -07:00
David Harris
39bbeefa78 renamed DivStart 2021-10-10 08:32:04 -07:00
David Harris
64ed267825 renamed DivSigned 2021-10-10 08:30:19 -07:00
Katherine Parry
77fe00947e FMA matches diagram and lint warnings fixed 2021-10-09 17:38:10 -07:00
kipmacsaigoren
96565f9435 rename adder in fpu for synthesis 2021-10-08 17:47:54 -05:00
kipmacsaigoren
7fde7aae6e Merging new changes into the old one's I've made in the OKstate servers 2021-10-08 17:47:11 -05:00
Kip Macsai-Goren
f3058f94c6 removed loops and simplified mask generation logic. PMP's now pass my tests and linux tests up to around 300M instructions. 2021-10-08 15:33:18 -07:00
kipmacsaigoren
2d4623b49c Merge branch 'main' of github.com:davidharrishmc/riscv-wally into main 2021-10-08 12:01:44 -05:00
bbracker
1824b2af13 fix div restarting bug 2021-10-07 18:55:00 -04:00
kipmacsaigoren
8db7ce002d Merge branch 'main' of github.com:davidharrishmc/riscv-wally into main 2021-10-06 11:52:34 -05:00
James E. Stine
a91c0c8fc7 Make changes to fpdiv - still working on clock issue with fsm that was changed from posedge to negedge - also updated fpdivsqrt rounding to handle testfloat 2021-10-06 08:26:09 -05:00
kipmacsaigoren
b72e94badf Merge branch 'main' of github.com:davidharrishmc/riscv-wally into main 2021-10-04 12:28:03 -05:00
David Harris
36bbf0c502 Divider cleaup 2021-10-03 11:22:34 -04:00
David Harris
10ef563211 Divider cleanup 2021-10-03 11:16:48 -04:00
David Harris
78eba19a1f Replacing XE and DE with SrcAE and SrcBE in divider 2021-10-03 11:11:53 -04:00
David Harris
48e33c79a9 Reduced cycle count for DIVW/DIVUW by two 2021-10-03 09:42:22 -04:00
David Harris
648cc8ef64 Divider comments cleanup 2021-10-03 01:12:40 -04:00
David Harris
2ae51d1852 Parameterized number of bits per cycle for integer division 2021-10-03 01:10:15 -04:00
David Harris
81601e26a3 Divider cleanup 2021-10-03 00:41:41 -04:00
David Harris
c690a863b5 Added suffixes to more divider signals 2021-10-03 00:32:58 -04:00
David Harris
0c08a7c05c More divider cleanup 2021-10-03 00:20:35 -04:00
David Harris
5e6b2490cb Eliminated extra inversion for subtraction in divider 2021-10-03 00:10:12 -04:00
David Harris
418e9cd6e6 Added more pipeline stage suffixes to divider 2021-10-03 00:06:57 -04:00
David Harris
b3bded9e6c Added more pipeline stage suffixes to divider 2021-10-02 22:54:01 -04:00
David Harris
5db800fac3 Divider mostly cleaned up 2021-10-02 21:10:35 -04:00
David Harris
3a85c972b6 Partial divider cleanup 3 2021-10-02 21:00:13 -04:00
David Harris
5d64f04752 Partial divider cleanup 2 2021-10-02 20:57:54 -04:00
David Harris
f913305993 Partial divider cleanup 2021-10-02 20:55:37 -04:00
David Harris
afd6babc13 Divider code cleanup 2021-10-02 10:41:09 -04:00
David Harris
e33ef58e67 Added negative edge triggered flop to save inputs; do absolute value in first cycle for signed division 2021-10-02 10:36:51 -04:00
David Harris
4926ae343a Divider code cleanup 2021-10-02 10:13:49 -04:00
David Harris
852eb24731 Moved negating divider otuput to M stage 2021-10-02 10:03:02 -04:00
David Harris
9d63aa683f Moved muldiv result selection to M stage for performance 2021-10-02 09:38:02 -04:00
David Harris
fbe6e41169 Divide performs 2 steps per cycle 2021-10-02 09:19:25 -04:00
David Harris
e11c565a6f Merge branch 'main' of https://github.com/davidharrishmc/riscv-wally into main 2021-09-30 23:15:34 -04:00
bbracker
6aa79657ed Revert "first attempt at verilog side of checkpoint functionality" 
This reverts commit fec96218f6.
 2021-09-30 20:45:26 -04:00
David Harris
caa36f267d Merge branch 'main' of https://github.com/davidharrishmc/riscv-wally into main 2021-09-30 20:07:43 -04:00
David Harris
9d8e7f2714 Integer Divide/Rem passing all regression. 2021-09-30 20:07:22 -04:00
David Harris
760f4d66dd RV32 div/rem working signed and unsigned 2021-09-30 15:24:43 -04:00
David Harris
42d573be57 SRT Division unsigned passing Imperas tests 2021-09-30 12:17:24 -04:00
bbracker
fec96218f6 first attempt at verilog side of checkpoint functionality 2021-09-28 23:17:58 -04:00
kipmacsaigoren
523d25ee7b Merge branch 'ppa' into main 2021-09-20 01:01:47 -05:00
Ross Thompson
221dbe92b2 Fixed the amo on dcache miss cpu stall issue. 2021-09-17 22:15:03 -05:00
Ross Thompson
e16c27225b Finished adding the d cache flush. Required ensuring the write data, address, and size are 
correct when transmitting to AHBLite interface.
 2021-09-17 13:03:04 -05:00
Kip Macsai-Goren
4de4774a71 more input changes on prioirty thermometer. passes lint 2021-09-17 13:07:21 -04:00
kipmacsaigoren
cc4ad218cb added new fun ways of putting inputs into the priority thermometer 2021-09-17 12:00:38 -05:00
Ross Thompson
cfd522da6b The E stage needs to be flushed on InvalidateICacheM. FlushM should be asserted. 2021-09-17 10:33:57 -05:00
Ross Thompson
0b1e59d075 Updated Dcache to fully support flush. This appears to work. 
Updated PCNextF so it points to the correct PC after icache invalidate.
Build root crashes with PCW mismatch and invalid register writes.
 2021-09-17 10:25:21 -05:00
Ross Thompson
615fd41e7b Added states and all control and data path logic to support d cache flush. This is currently untested; however the existing regresss test passes. 2021-09-16 18:32:29 -05:00
Ross Thompson
348187ea70 Added counters to walk through d cache flush. 2021-09-16 17:12:51 -05:00
Ross Thompson
d901f60a6d Added flush controls to cachway. 2021-09-16 16:56:48 -05:00
Ross Thompson
cae350abb7 Added invalidate to icache. 2021-09-16 16:15:54 -05:00
kipmacsaigoren
97c474327c changed priority circuits for synthesis and light cleanup 2021-09-15 12:24:24 -05:00
David Harris
9ae25b0cea Added Zfencei support in instruction decoder and configurations. Also added riscv-arch-test 32-bit tests to regression. 2021-09-15 13:14:00 -04:00
David Harris
9fa048980d Fixed MTVAL contents during breakpoint. Now all riscv-arch-test vectors pass in rv32 and rv64 2021-09-13 12:40:40 -04:00
David Harris
bbb6c7bef7 Restored old integer divider 2021-09-12 22:07:52 -04:00
David Harris
dd1e7548ed Modified rxfull determination in UART, started division 2021-09-12 20:00:24 -04:00
Ross Thompson
be864abcc5 Fixed bug with or_rows. 
If ROWS == 1 then the output was always X.  Fixed by adding if to check if ROWS==1.
 2021-09-11 15:51:11 -05:00
Ross Thompson
570aab4275 Fixed FPGA synthesis bug in the fpdiv fsm. Was creating latches. 2021-09-11 15:40:27 -05:00
Ross Thompson
5744796431 Fixed dcache to prevent latches in FPGA synthesized design. 2021-09-11 12:03:48 -05:00
Ross Thompson
6f4542f063 Third attempt at fixing the write enables for the icache cacheway. 2021-09-09 15:08:10 -05:00
Ross Thompson
6965bde95c Merge branch 'main' of github.com:davidharrishmc/riscv-wally into main 
Refixed some bit width issues in the icache.
 2021-09-09 12:44:02 -05:00
Ross Thompson
1d370ca71f fixed some lint bugs. 2021-09-09 12:38:57 -05:00
David Harris
12bd351edf Lint cleaning, riscv-arch-test testing 2021-09-09 11:05:12 -04:00