Luke Kenneth Casson Leighton [Sat, 8 Jun 2019 12:12:25 +0000 (13:12 +0100)]
start propagating arrays of src regs up through dependency matrix
Luke Kenneth Casson Leighton [Sat, 8 Jun 2019 12:00:26 +0000 (13:00 +0100)]
whitespace
Luke Kenneth Casson Leighton [Sat, 8 Jun 2019 11:59:54 +0000 (12:59 +0100)]
whoops use reduce(or_) not bool to merge bitwise src in dep cells
Luke Kenneth Casson Leighton [Sat, 8 Jun 2019 11:51:23 +0000 (12:51 +0100)]
use new array-based dep cell in dep matrix
Luke Kenneth Casson Leighton [Sat, 8 Jun 2019 11:44:59 +0000 (12:44 +0100)]
dependence cell to use arrays
Luke Kenneth Casson Leighton [Sat, 8 Jun 2019 11:33:17 +0000 (12:33 +0100)]
reordering connections on mem-dep matrices
Luke Kenneth Casson Leighton [Sat, 8 Jun 2019 08:05:20 +0000 (09:05 +0100)]
experiment connecting ld/st matrix to fu/mem one
Luke Kenneth Casson Leighton [Sat, 8 Jun 2019 06:46:29 +0000 (07:46 +0100)]
add fu-mem versions of fu-fu matrix and picker vec
Luke Kenneth Casson Leighton [Sat, 8 Jun 2019 06:38:17 +0000 (07:38 +0100)]
rename rsel vectors in mem dep cell
Luke Kenneth Casson Leighton [Sat, 8 Jun 2019 06:37:57 +0000 (07:37 +0100)]
add fu-mem dependency cell based on fu_dep_cell.py
Luke Kenneth Casson Leighton [Fri, 7 Jun 2019 22:20:12 +0000 (23:20 +0100)]
rename v_rd_rsel_o in dependence cell as well
Luke Kenneth Casson Leighton [Fri, 7 Jun 2019 22:17:52 +0000 (23:17 +0100)]
rename fu-regs rd/wr sel vector
Luke Kenneth Casson Leighton [Fri, 7 Jun 2019 22:17:34 +0000 (23:17 +0100)]
extend ld/st mem test
Luke Kenneth Casson Leighton [Fri, 7 Jun 2019 09:32:00 +0000 (10:32 +0100)]
start preliminary test of load/store dependency matrices
Luke Kenneth Casson Leighton [Fri, 7 Jun 2019 09:31:05 +0000 (10:31 +0100)]
continue miss_handler.py conversion
Luke Kenneth Casson Leighton [Thu, 6 Jun 2019 19:25:16 +0000 (20:25 +0100)]
add first conversion of ariane miss handler, WIP
Luke Kenneth Casson Leighton [Wed, 5 Jun 2019 07:58:26 +0000 (08:58 +0100)]
rename load_i and stor_i to ld_pend_i / st_pend_i, match names in MemFUDepMatrix
Luke Kenneth Casson Leighton [Wed, 5 Jun 2019 05:43:14 +0000 (06:43 +0100)]
add mirror copy of FU_Regs Dep Matrix, names changed, adapted to LD/ST
wr -> ld
dest -> ld
rd -> st
src1 -> st
global search and replace.
Luke Kenneth Casson Leighton [Wed, 5 Jun 2019 05:22:55 +0000 (06:22 +0100)]
add addrgen comment
Luke Kenneth Casson Leighton [Mon, 3 Jun 2019 14:03:30 +0000 (15:03 +0100)]
add docstring for address match comparator
Luke Kenneth Casson Leighton [Mon, 3 Jun 2019 09:36:27 +0000 (10:36 +0100)]
add to docstring
Luke Kenneth Casson Leighton [Mon, 3 Jun 2019 08:13:14 +0000 (09:13 +0100)]
connect up LD/ST matrix properly
Luke Kenneth Casson Leighton [Mon, 3 Jun 2019 07:41:34 +0000 (08:41 +0100)]
add ldst_matrix.py back in, needs some work though
Luke Kenneth Casson Leighton [Mon, 3 Jun 2019 04:53:42 +0000 (05:53 +0100)]
whoops connect vector by y not x in FUFU matrix
Luke Kenneth Casson Leighton [Mon, 3 Jun 2019 00:38:38 +0000 (01:38 +0100)]
allow branch immediate
Luke Kenneth Casson Leighton [Mon, 3 Jun 2019 00:32:58 +0000 (01:32 +0100)]
reasonably sure that the pipelined ALU will work...
Luke Kenneth Casson Leighton [Sun, 2 Jun 2019 14:07:56 +0000 (15:07 +0100)]
try random instructions test with immediates, works ok
Luke Kenneth Casson Leighton [Sun, 2 Jun 2019 14:03:55 +0000 (15:03 +0100)]
add immediate to ALU instructions
Luke Kenneth Casson Leighton [Sun, 2 Jun 2019 13:47:24 +0000 (14:47 +0100)]
add immediate arg to instr
Luke Kenneth Casson Leighton [Sun, 2 Jun 2019 13:29:25 +0000 (14:29 +0100)]
remove unneeded code
Luke Kenneth Casson Leighton [Sun, 2 Jun 2019 13:28:24 +0000 (14:28 +0100)]
add operand-is-immediate to sim and instructions
Luke Kenneth Casson Leighton [Sun, 2 Jun 2019 13:24:10 +0000 (14:24 +0100)]
add op is immediate to instruction q
Luke Kenneth Casson Leighton [Sun, 2 Jun 2019 13:04:08 +0000 (14:04 +0100)]
start adding in immediates into CompUnit ALU
Luke Kenneth Casson Leighton [Sun, 2 Jun 2019 12:43:31 +0000 (13:43 +0100)]
remove unneeded code
Luke Kenneth Casson Leighton [Sun, 2 Jun 2019 12:43:11 +0000 (13:43 +0100)]
whoops forgot to make CU decisions based on latched opcode
Luke Kenneth Casson Leighton [Sun, 2 Jun 2019 12:37:08 +0000 (13:37 +0100)]
whoops search/replace error
Luke Kenneth Casson Leighton [Sun, 2 Jun 2019 12:24:46 +0000 (13:24 +0100)]
add MemSim, remove redundant signal
Luke Kenneth Casson Leighton [Sun, 2 Jun 2019 00:47:01 +0000 (01:47 +0100)]
LDSTDepCell can act as a matrix
Luke Kenneth Casson Leighton [Sat, 1 Jun 2019 14:29:43 +0000 (15:29 +0100)]
shorten by adding temp comb = m.d.comb
Luke Kenneth Casson Leighton [Sat, 1 Jun 2019 14:28:12 +0000 (15:28 +0100)]
addr release only on op_ldst
Luke Kenneth Casson Leighton [Sat, 1 Jun 2019 14:18:50 +0000 (15:18 +0100)]
debug comp_ldst
Luke Kenneth Casson Leighton [Sat, 1 Jun 2019 13:14:29 +0000 (14:14 +0100)]
make use of busy_o clearer
Luke Kenneth Casson Leighton [Sat, 1 Jun 2019 13:09:53 +0000 (14:09 +0100)]
add LDST Computation Unit (in progress)
Luke Kenneth Casson Leighton [Sat, 1 Jun 2019 13:08:53 +0000 (14:08 +0100)]
multi-bit LD?ST and add go_die
Luke Kenneth Casson Leighton [Fri, 31 May 2019 21:05:25 +0000 (22:05 +0100)]
issue from q is combinatorial so do not need set to zer0
Luke Kenneth Casson Leighton [Fri, 31 May 2019 20:37:52 +0000 (21:37 +0100)]
use instruction issue queue to get instructions into engine
Luke Kenneth Casson Leighton [Fri, 31 May 2019 07:10:07 +0000 (08:10 +0100)]
got instruction queue working
Luke Kenneth Casson Leighton [Thu, 30 May 2019 21:31:53 +0000 (22:31 +0100)]
leave off number being subtracted from "ready_o" calculation
Luke Kenneth Casson Leighton [Thu, 30 May 2019 21:19:40 +0000 (22:19 +0100)]
add instruction queue test
Luke Kenneth Casson Leighton [Thu, 30 May 2019 03:08:35 +0000 (04:08 +0100)]
do instruction q as array of (flat) Signals, add in and out data
Luke Kenneth Casson Leighton [Thu, 30 May 2019 01:01:17 +0000 (02:01 +0100)]
flatten instruction queue using a shift register
Luke Kenneth Casson Leighton [Wed, 29 May 2019 23:41:04 +0000 (00:41 +0100)]
remove unneeded imports
Luke Kenneth Casson Leighton [Wed, 29 May 2019 23:39:51 +0000 (00:39 +0100)]
remove Shadow class, replace with ShadowFn, use multi-bit SRLatch
Luke Kenneth Casson Leighton [Wed, 29 May 2019 23:23:36 +0000 (00:23 +0100)]
return to SRLatches for DependencyRow, simplifies (speeds up)
Luke Kenneth Casson Leighton [Wed, 29 May 2019 22:57:19 +0000 (23:57 +0100)]
remove FU Dep Cell, go back to SRLatch direct
Luke Kenneth Casson Leighton [Wed, 29 May 2019 21:35:34 +0000 (22:35 +0100)]
wire up FU-FU matrix using inverted row/col
Luke Kenneth Casson Leighton [Wed, 29 May 2019 21:28:09 +0000 (22:28 +0100)]
make FU-FU DepCell a row
Luke Kenneth Casson Leighton [Wed, 29 May 2019 20:46:40 +0000 (21:46 +0100)]
do dependency row as multi-bit SRLatch
Luke Kenneth Casson Leighton [Wed, 29 May 2019 15:11:32 +0000 (16:11 +0100)]
add start of instruction queue
Luke Kenneth Casson Leighton [Wed, 29 May 2019 12:02:51 +0000 (13:02 +0100)]
wait for individual batch-units rather than the global signal
Luke Kenneth Casson Leighton [Wed, 29 May 2019 10:13:35 +0000 (11:13 +0100)]
whoops wrong mask for branch instruction decode
Luke Kenneth Casson Leighton [Wed, 29 May 2019 10:10:22 +0000 (11:10 +0100)]
get issue logic working for issue unit array
Luke Kenneth Casson Leighton [Wed, 29 May 2019 09:41:25 +0000 (10:41 +0100)]
latch opcode on instruction issue
Luke Kenneth Casson Leighton [Wed, 29 May 2019 03:21:04 +0000 (04:21 +0100)]
use opcode-base issue units, parallel units
Luke Kenneth Casson Leighton [Wed, 29 May 2019 00:24:01 +0000 (01:24 +0100)]
add docstring
Luke Kenneth Casson Leighton [Wed, 29 May 2019 00:10:49 +0000 (01:10 +0100)]
group computation units together
Luke Kenneth Casson Leighton [Mon, 27 May 2019 12:02:23 +0000 (13:02 +0100)]
remove waw stall from issue unit
Luke Kenneth Casson Leighton [Mon, 27 May 2019 10:58:09 +0000 (11:58 +0100)]
add an IssueUnitGroup which has a priority picker
Luke Kenneth Casson Leighton [Mon, 27 May 2019 09:51:17 +0000 (10:51 +0100)]
stop on shadow for the moment
Luke Kenneth Casson Leighton [Sun, 26 May 2019 01:03:07 +0000 (02:03 +0100)]
have to bring in a reset signal into the shadow units to get them to go to
a known state, after a branch result is known
Luke Kenneth Casson Leighton [Sat, 25 May 2019 22:48:40 +0000 (23:48 +0100)]
separate out go_die from go_rd/go_wr to stop reg read/write triggering
Luke Kenneth Casson Leighton [Sat, 25 May 2019 22:21:14 +0000 (23:21 +0100)]
get fake branch delay time working
Luke Kenneth Casson Leighton [Sat, 25 May 2019 22:16:49 +0000 (23:16 +0100)]
whoops, operation supposed to be tested, not counter
Luke Kenneth Casson Leighton [Sat, 25 May 2019 17:21:20 +0000 (18:21 +0100)]
branch success/fail nearly there
Luke Kenneth Casson Leighton [Sat, 25 May 2019 12:34:11 +0000 (13:34 +0100)]
experimenting with branch shadowing
Luke Kenneth Casson Leighton [Sat, 25 May 2019 07:55:47 +0000 (08:55 +0100)]
add branch speculation using shadows
Luke Kenneth Casson Leighton [Fri, 24 May 2019 16:54:43 +0000 (17:54 +0100)]
use internal latch qlq value instead of creating a separate sync register
Luke Kenneth Casson Leighton [Fri, 24 May 2019 16:38:58 +0000 (17:38 +0100)]
remove dummy values for branch setup
Luke Kenneth Casson Leighton [Fri, 24 May 2019 16:37:32 +0000 (17:37 +0100)]
replace m.d.comb += with comb += etc. increases readability
Luke Kenneth Casson Leighton [Fri, 24 May 2019 16:09:54 +0000 (17:09 +0100)]
remove unneeded import
Luke Kenneth Casson Leighton [Fri, 24 May 2019 14:44:01 +0000 (15:44 +0100)]
use create_random_ops function
Luke Kenneth Casson Leighton [Fri, 24 May 2019 14:41:39 +0000 (15:41 +0100)]
add in branch speculation recorder, link to branch
Luke Kenneth Casson Leighton [Fri, 24 May 2019 14:17:01 +0000 (15:17 +0100)]
add branch speculation record
Luke Kenneth Casson Leighton [Fri, 24 May 2019 13:30:19 +0000 (14:30 +0100)]
make bgt accessible outside of CU
increase shadow width (make room for branch shadow)
Luke Kenneth Casson Leighton [Fri, 24 May 2019 13:15:15 +0000 (14:15 +0100)]
check that bgt test ALU works
Luke Kenneth Casson Leighton [Fri, 24 May 2019 13:01:23 +0000 (14:01 +0100)]
add delay on branches
Luke Kenneth Casson Leighton [Fri, 24 May 2019 13:00:44 +0000 (14:00 +0100)]
remove unneeded code
Luke Kenneth Casson Leighton [Fri, 24 May 2019 13:00:00 +0000 (14:00 +0100)]
add delay on branches
Luke Kenneth Casson Leighton [Fri, 24 May 2019 11:41:08 +0000 (12:41 +0100)]
work on branch simulation logic
Luke Kenneth Casson Leighton [Fri, 24 May 2019 11:40:28 +0000 (12:40 +0100)]
reset shadow latches if neither success nor fail are applied
Luke Kenneth Casson Leighton [Fri, 24 May 2019 09:06:39 +0000 (10:06 +0100)]
split out shared wait for issue and wait for busy clear functions
Luke Kenneth Casson Leighton [Fri, 24 May 2019 08:49:48 +0000 (09:49 +0100)]
make a start on a branch simulator
Luke Kenneth Casson Leighton [Fri, 24 May 2019 07:56:59 +0000 (08:56 +0100)]
add simple branch-compare example ALU
Luke Kenneth Casson Leighton [Fri, 24 May 2019 07:12:03 +0000 (08:12 +0100)]
add priority picker docstring
Luke Kenneth Casson Leighton [Fri, 24 May 2019 06:55:06 +0000 (07:55 +0100)]
cleanup, docstrings
Luke Kenneth Casson Leighton [Thu, 23 May 2019 20:57:56 +0000 (21:57 +0100)]
shadow seems to do the job of guaranteeing write-after-write
Luke Kenneth Casson Leighton [Thu, 23 May 2019 14:19:49 +0000 (15:19 +0100)]
set up the shadow grid
Luke Kenneth Casson Leighton [Thu, 23 May 2019 13:27:10 +0000 (14:27 +0100)]
only want a single-bit transition
Luke Kenneth Casson Leighton [Thu, 23 May 2019 13:23:32 +0000 (14:23 +0100)]
add in busy_prev/next signal to work out which unit was activated
Luke Kenneth Casson Leighton [Thu, 23 May 2019 12:55:38 +0000 (13:55 +0100)]
shadow fail/good signals need to be amalgamated (shadow enable is the matrix)