Nyaux

[surreal path]

wanna know something funny in the scheduler

IVE BEEN DOING THIS THE ENTIRE TIME AS WELL

😭

thats not how fork works

alright

welp the funny waitpid issue is solved

[elder shoal]

https://tenor.com/view/factorio-we-do-a-little-throughput-loaders-transport-belt-gif-23235553

[surreal path]

real

[mossy belfry]

is this live footage of Astral uACPI AML parsing speed

[surreal path]

@elder shoal should i disable usb legacy support the wiki is telling me to do so???? but i want the usb keyboard to act as a ps2 keyboard and also the wiki says it will interfere with the init of the ps2 controller??

im asking you since i want this to work on real hw, with usb emulated ps2 keyboards

and i think you got that working with astral after hell

so im just asking for your approach on this

[elder shoal]

I did not

[surreal path]

so i guess i should just skip this step ?

by the lack of response im guessing so lol

[elder shoal]

I was busy

But I have no ida

[surreal path]

all good, infy says to use PNP so thats what im doing lol

[kind root]

If you're using a laptop it will have a ps2 keyboard, on PCs you won't get any emulation because you enable acpi mode

[surreal path]

oh

my laptop has a usb keyboard

screwed

[kind root]

U sure?

[surreal path]

yep

[kind root]

How

[surreal path]

rayan@athena ~]$ lsusb
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 002: ID 0408:4036 Quanta Computer, Inc. Acer FHD User Facing
Bus 003 Device 003: ID 05af:766a Jing-Mold Enterprise Co., Ltd USB-HID Gaming Keyboard (D)
Bus 003 Device 004: ID 04f3:0c4f Elan Microelectronics Corp. ELAN:Fingerprint
Bus 003 Device 005: ID 8087:0033 Intel Corp. AX211 Bluetooth
Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub

[kind root]

The internal keyboard is wired via USB?

[surreal path]

yep

[kind root]

What the fuck

[surreal path]

yea this laptop is cursed

[kind root]

Which model is this

[surreal path]

acer predator triton PT14-51

[thorn bramble]

least fucked laptop hardware

[kind root]

Well give it a try who knows maybe u will still get emulation

U could ask uACPI to not enable acpi mode to see if it makes any diff

[surreal path]

nahh

its fine

[kind root]

I don't recommend leaving that flag on tho

No idea why they decided to route it like that lmao

[surreal path]

WHY CANT IT FIND THE FUNCTION

i did the cplusplus guard in my header file

its trolling me

[thorn bramble]

you need to mark it as extern “C” in the source file

[surreal path]

oh

huh??

but i dont in fb.cpp

and it runs fine

that didnt fix it

header file is just this

#pragma once
#include <controllers/i8042/i8042.h>
#include <fs/devfs/devfs.h>
#include "fs/vfs/vfs.h"
#include <mem/kmem.h>
#include <term/term.h>
#include <arch/x86_64/syscalls/syscall.h>
#include <cppglue/glue.hpp>

#ifdef __cplusplus
extern "C" {
#endif
void devkbd_init(struct vfs *curvfs);
#ifdef __cplusplus
}
#endif

keyboard.cpp does include keyboard.hpp

and the function is declared there

as well

function declarations matching

didnt add it to my meson to build im stupid

[mossy belfry]

just write a simple usb controller driver

[thorn bramble]

go away

[mossy belfry]

I got device addressing working with xhci in 2 days

not too bad trust me

[thorn bramble]

i got usb hid boot protocol, msd and cdc ncm in like 1 day

[mossy belfry]

oooh awesome what controller did you use

[thorn bramble]

generic xhci

[broken depot]

[surreal path]

insane

robot may need to

quit factorio

anyways mornin

i fell asleep writing ps2 code

which is insane

[broken depot]

[surreal path]

nyaux is really behind in a lot of things

other new hobby oses are surpassing us

[broken depot]

You're still surpassing me atm :P

It used to be true that I had more stuff but I think you've either already passed me or are about to.

[surreal path]

how??

doesnt badger os have signals and shit

and pipes

nyaux has none of that

[thorn bramble]

wow they have signals and u don't, it must mean they are ahead

[surreal path]

yea?

[broken depot]

Nyaux, my good friend.

[thorn bramble]

can badgeros run doom tho?

[broken depot]

You have DOOM running in userspace.

[broken depot]

Absolutely not.

[surreal path]

thats piss easy tho

its just some fuckin fbdev shit

i dont even have input for doom yet

[broken depot]

BadgerOS doesn't have framebuffers at all and it doesn't support all the POSIX syscalls I want, it also doesn't have any userspace libc at all.

[surreal path]

oh

right okay

[broken depot]

All testing I've been doing is either in-kernel, or a tiny app directly invoking syscalls.

[surreal path]

i see

[broken depot]

It doesn't even support fork or exec

[surreal path]

oh damn

[broken depot]

Only a weird kind of spawn function not compatible with posix_spawn.

[surreal path]

i see

[maiden ridge]

Wait hold on

What

[broken depot]

You've been working actively on Nyaux where I've been doing other projects.

[surreal path]

very slowly tho tm

[broken depot]

Processes are created by the syscall pcreate, which is incompatible with posix_spawn

[maiden ridge]

Oh ok

So there is a mechanism for process creation alright

[broken depot]

So I'll be converting that into posix_spawn compatible first, I can deal with fork and exec later.

[maiden ridge]

Ah

[edgy pilot]

ilobilix doesn't even have mmap
what are you on nyaux

[surreal path]

my scheduler is shit bro

[edgy pilot]

anyway, monkuous can fast forward your kernel

[surreal path]

and somehow nyaux has a fuckin oom issue after executing doomgeneric mutiple times

[surreal path]

wha

[edgy pilot]

@ monkuous nyaux needs signals

[surreal path]

nah thats insane

ah yes just get monkuous to write nyaux

real

[edgy pilot]

real though

[surreal path]

nahh

[thorn bramble]

@\monkuous pls write my kernel kthx

[edgy pilot]

epic escape fail

[surreal path]

monkuous make weston run on nyaux real

[thorn bramble]

if you try to escape the @ it will show the <@ numbers> + it will still ping

[surreal path]

https://tenor.com/view/epic-embed-fail-epic-fail-gif-8670027723805715741

[thorn bramble]

i prefer @\ over @<space> :^)

[surreal path]

\

\n

[thorn bramble]

good job

[surreal path]

so doing 2 slashes

[cinder plinth]

Pretty sure you can \ @

[surreal path]

makes only one slash

insane

[thorn bramble]

wow thats crazy

its almost as if

as if

you escaped it

[surreal path]

@\iretq

doesnt work

trolled

[thorn bramble]

yeah obviously

[surreal path]

cooked

[cinder plinth]

@thorn bramble

[thorn bramble]

its not supposed to ping

[cinder plinth]

Ah

[thorn bramble]

and that did ping me

[cinder plinth]

Bruh

[supple robin]

@ iretq

[thorn bramble]

and that has a space

😭

ugly ahh fake ping

[cinder plinth]

You used to be able to

[supple robin]

@\iretq

[surreal path]

im going to my moms today at 7pm

[thorn bramble]

@​iretq

[surreal path]

after not seeing her for 4 months

[thorn bramble]

yooo zwsp trolled

[supple robin]

@thorn bramble

bruh

[thorn bramble]

lmao

[thorn bramble]

unlucky

[surreal path]

shes still my mom

[supple robin]

👎

[thorn bramble]

true but wrong server

[surreal path]

oh right

solved

[thorn bramble]

trolling

[surreal path]

[surreal path]

why thumbs down

[thorn bramble]

i think that means

he disagrees with your opinion

[surreal path]

your gonna tell me she adopted me?

[surreal path]

fair

[supple robin]

i stop talking to people that annoy me

i usually shut them out of everything

i've only had to do that once

[thorn bramble]

REAL

same

[surreal path]

i did this with my mom but like i still love her even if shes awful

[thorn bramble]

they might or might not still be messaging me to this day...

[supple robin]

it costs 0€ to be nice

atp it's effort to be miserable 24/7

[surreal path]

https://tenor.com/view/no-nitro-discord-nitro-discord-mod-epic-embed-fail-meme-gif-23000689

me after no nitro

https://tenor.com/view/gift-nitro-nitro-free-free-nitro-discord-gif-20993620

<

[ebon needle]

why not to use trial subscription

[surreal path]

because no

[maiden ridge]

If you are a girl then it's easy

[surreal path]

😭 💀

become a discord kitten

[worldly condor]

my strategy is to out-annoy them so they do that to me

[maiden ridge]

This

[mossy belfry]

say i was wondering how nyaux does any caching at all for things like the FS, (vfs nodes), and things

the codebase is too horrid for me to go and read it so i just wanted to ask here

[edgy pilot]

real

[flat nymph]

Not necessarily

[flat nymph]

I don't have signals

[surreal path]

it doesnt

[forest blaze]

hi

bye

[surreal path]

insane

[ebon needle]

what

[surreal path]

most useful nyaux convo

[ebon needle]

is your laptop vendor masochists

like

[surreal path]

yes

[ebon needle]

why your embed keyboard is usb

[surreal path]

blame them

lol

[ebon needle]

when nyaux ace of penguins port

[surreal path]

when i got xorg

we ball at 8 as usual

cause of fuckin heat

as usual

[mossy belfry]

as in basketball or as in you have no AC and have to wait all day to do any work because it is hot

[surreal path]

been working on ps2

ive gotten the ps2 controller to send an ACK

so we gamer

i just need to setup interrupts with the fuckin

controller

i.e. talk to the ioapic to get shit routed

then we ball we ball

[kind root]

will nyaux support multiplexed ps/2 and synaptics touchpads

[surreal path]

what is multiplexed ps2

[kind root]

ps2 with up to 4 devices

[surreal path]

is that real?

docs and spec for this?

[kind root]

laptops sometimes have 3 devices: keyboard, touchpad, and the joystick mouse

[surreal path]

my laptop uses usb so

cooked

fried

[kind root]

wel yours is fucked

[surreal path]

tho i have a spare laptop here

[kind root]

but normal ones do

[surreal path]

it has a touchpad

[silver yarrow]

"normal ones"

[surreal path]

and keyboard

[kind root]

the specs are pretty simple

[silver yarrow]

lolololo

[surreal path]

probs ps2

[surreal path]

can i see them?

[surreal path]

epic

[kind root]

all laptops i have use this spec ^

[silver yarrow]

those are going into my stash

[kind root]

there is one magic value u must write which only linux has, and the spec mentions but doesnt actually provide lol

(for the touchpad to report multiple fingers in separate packets)

[silver yarrow]

fucking sick

because of course

[kind root]

https://github.com/UltraOS/UltraLegacy/blob/2ed2879c96a7095b5077df5ba5db5b30a6565417/Kernel/Drivers/PS2/SynapticsTouchpad.cpp#L106

[silver yarrow]

spec == "look at the linux driver"

synonym really

[kind root]

nah its mostly correct

just this thing is borked

[flat nymph]

Touchpad usually goes over smbus?

[kind root]

its exposed via both usually

[flat nymph]

what are you supposed to do if you have drivers for both?

[silver yarrow]

pick one

[flat nymph]

but like how do you know that those are not two different devices?

[kind root]

i2c is better than ps/2, i think linux prefers it

idk, it has some code for that

[flat nymph]

ACPI would tell you?

[kind root]

probably

[flat nymph]

So documentation is linux again

cool

[silver yarrow]

i2c ❤️

[kind root]

i never had an i2c driver so

[silver yarrow]

spec, documentation, linux code

all the same word

https://tenor.com/view/theyre-the-same-picture-the-office-pam-the-office-us-gif-20757621

[flat nymph]

I think I'll finally write the init server, then I'll do smbus

[edgy pilot]

that little red nub?

[kind root]

ye

[surreal path]

im working hard on the ps2 driver

just

the funny thing is that the wiki page is vague on a lot of things

so i had to discover some shit on my own

[flat nymph]

just read the datasheet

[surreal path]

theres a datasheet?

[flat nymph]

yes

[surreal path]

where

[flat nymph]

google

[surreal path]

insane

[edgy pilot]

oooo this is messing with my brain

[surreal path]

huh

whats up

[edgy pilot]

too similar

[surreal path]

😭

[edgy pilot]

sky

[surreal path]

@flat nymph are you my brother

[flat nymph]

Also bottom of osdev wiki

[surreal path]

yea im looking

i fixed that shit

[surreal path]

gamer

lets fucking go

the cutoff part says its a mouse

so port 1 has a mouse lol

at least for qemu

[kind root]

do u use acpi to discover ps/2?

[surreal path]

yes

pnp ids stolen from managarm lol

[kind root]

ah

[surreal path]

time to check port 2

and setup the information structs

[surreal path]

so um

mint told me port 1 should be a kbd

but its reporting as mouse

i want to cry

[surreal path]

@elder shoal i am having a astral ps2 curse part 2

[surreal path]

okay so

all im figuring out is

its always timeing out

which is bad

[surreal path]

im dying

[mossy belfry]

wait ru sure that ps2 will work on ur laptop or are you just sending your hopes and prayers that it will lol

this is intersting

never head of usb laptop inbuilt KBs and whatever

[surreal path]

im not even testing on real hw

im testing on fucking qemu bro

i hate ps2 i hate ps2 i HATE ps2

fuck this ive been up for 4 hours im going sleep

[maiden ridge]

The laptop does emulate ps2

My laptop uses i2c

But it emulated a ps2 mouse

Some systems firmware do emulate usb ones as ps2 but that varies from system to system

[thorn bramble]

maybe its routed both via ps2 and usb

[surreal path]

yo iretq

[thorn bramble]

and the usb one is favoured

[surreal path]

im dying

help

[thorn bramble]

i just woke up

[surreal path]

fair

[thorn bramble]

its so cold

[surreal path]

how

its summer bro

ive been awake

all night

banging my head againist this stupid fucking little chip

who wont listen to me

[thorn bramble]

i have never written a ps2 driver before so

[surreal path]

i know

im just letting you know the pain im in rn

fucking xhci would be easier then this shit atp

[daring juniper]

With how painful this sounds, it may just be better to pretend ps2 doesn't exist lol

[surreal path]

no because i need input

and im not writing xhci

im too retarded

[daring juniper]

fair

the third message got sent after I said fair XD

fair to the first two parts

[mossy belfry]

it's really easy

[surreal path]

im not doing it

[mossy belfry]

i am almost at address space init but i took a detour to do other work

oh ok

[surreal path]

not rn

[thorn bramble]

its not easy easy

its just not hard

similar to nvme in complexity

drivers for all the usb drivers on the other hand is gonna be more work, but at least hid boot protocol is pretty simple

[maiden ridge]

If the os offers a usb driver it's used

I remember it being an issue on a dell gaming laptop

Where the keyboard doesn't work under Windows but does in the UEFI firmware

Turns out a resistor was blown on the usb data lines on the keyboard and replacing that it worked

But yeah there are some cursed laptops like this

[flat nymph]

My PS/2 driver is semi-ok I think

Except that it doesn't return the keyboard layout on my laptop, and just 'ACK's

But I'm suspecting it's not my fault

[ebon needle]

nah my ps/2 driver is just find ps/2 keyboard with uacpi

[ebon needle]

@surreal path where do you find wads for doomgeneric

[edgy pilot]

https://tenor.com/view/hello-weston-gif-24957771

[ebon needle]

i dont finding them 😭

[silver yarrow]

I can send u the original one

🙂

[cinder plinth]

"doom wads"

and doom shareware is free so this is legal!

[edgy pilot]

https://archive.org/details/theultimatedoom_doom2_doom.wad
this was the first result on google

[silver yarrow]

well there is that one that isnt I think?

[cinder plinth]

doom shareware is just like the first few levels

[silver yarrow]

ah

[ebon needle]

i was getting some random russian sites

lmao

[silver yarrow]

lol

[edgy pilot]

get a better country

[cinder plinth]

it was meant as a demo (you can order the full game via the phone number in the game)

[tawdry mirage]

it's the first episode

[silver yarrow]

lmao

[silver yarrow]

is that phone number still active

[surreal path]

can we discuss piracy outside my thread please

[edgy pilot]

🏴‍☠️ 🏴‍☠️ 🏴‍☠️ 🏴‍☠️ 🏴‍☠️

[surreal path]

insane

[cinder plinth]

how many levels is that

like 5?

[tawdry mirage]

9

[cinder plinth]

damn

[tawdry mirage]

8 main levels + secret

[broken depot]

More evidence of Nyaux thread is just another #lounge-0

[tawdry mirage]

all doom 1 episodes are 9 levels long

[cinder plinth]

how do you get to the secret level

[cinder plinth]

I forgot you were a doom nerd

[tawdry mirage]

secret exit in e1m3 (or m4?)

[surreal path]

yea lmao, i mean i dont mind but like piracy in my thread is a bit much. for reasons of discord TOS

[ebon needle]

nyaux thread needs to become to darknet

[cinder plinth]

this isnt piracy

[edgy pilot]

it's not piracy if it's shareware

[cinder plinth]

shareware is free

they literally gave it to people as a demo

[surreal path]

okay

[ebon needle]

doom is free

[broken depot]

The WAD isn't covered by the shareware clause

[edgy pilot]

the link I sent is piracy though

[cinder plinth]

probably, there were also addresses and stuff idk

[silver yarrow]

they aint gonna delete one thread

lol

[broken depot]

The DOOM executable is shareware

[surreal path]

they'll nuke the server and id be the one to blame lol

[silver yarrow]

wont matter much when the entire discord is bye bye

[cinder plinth]

also it's literally id software, which is the most chill game company ever

[edgy pilot]

there's shareware wad

[cinder plinth]

no

[edgy pilot]

nah uh

[cinder plinth]

doom is literally open source

the wad (which contains the game assets like the map and sprites) is shareware

there are also completely FOSS wads like freedoom I think it's called?

[tawdry mirage]

freedoom yeah

[cinder plinth]

so it's not an issue

[broken depot]

I would like to inform whomever reacted to this message that that is not the USA flag

[surreal path]

im not doing anythin rn cause

im at my moms

and im not happy

plus im really stressed

and a little burned out tbf

so im just taking a break today

[surreal path]

no im not taking a break today

because

i have nothing else to do

no matter what i do i cannot get gdb to attach relibably to any ps2 related function in qemus code

so not only am i cooked

but im double cooked

atp ill recompile qemu to add prints

and if that doesnt work idk

cloning qemu rn ig

[surreal path]

okay so

when ps2 fails on a run in qemu

here is some of the shit i printed from qemu ps2 code

[rayan@athena build]$ ./qemu-system-x86_64 -M q35 -m 1G -cdrom ../../NyauxKC/nyaux.iso 
got cmd ffffffff
reset keyboard
ps2 read val fa
ps2 read val aa
got cmd ffffffff
reset keyboard
ps2 read val fa
got cmd ffffffff
ps2 read val fa
got cmd f0
ps2 read val fa
got cmd ffffffff
ps2 read val fa
ps2 read val 1c
ps2 read val 9c
ps2 read val 11
ps2 read val 91
ps2 read val 1d
got cmd ffffffff
unknown cmd ffffffff
ps2 read val fe

and when shit succeds

succedding run

got cmd ffffffff
reset keyboard
ps2 read val fa
ps2 read val aa
got cmd ffffffff
reset keyboard
ps2 read val fa
got cmd ffffffff
ps2 read val fa
got cmd f0
ps2 read val fa
got cmd ffffffff
ps2 read val fa
ps2 read val 1c
ps2 read val 9c
ps2 read val 1c
ps2 read val 9c
got cmd ffffffff
unknown cmd ffffffff
got cmd ffffffff
reset keyboard
ps2 read val fa
ps2 read val aa

oaky so

ps2 read val 11 vs ps2 read val 1c

whats going on

[surreal path]

okay so

after this loop

it all dies

being consisent

@kind root you know a lot abt ps2, do u think its the order im doing things here?

[kind root]

last time i worked on ps2 was 4 years ago

i remmeber literally nothing

[surreal path]

oh damn

[surreal path]

i can get the issue to consisently happen if i spam the keyboard on qemu

[thorn bramble]

i could also cause issues in my kernel by spamming keyboard during boot

solution is simple: don't

[surreal path]

nah i genuinely want this to work

the port 1 clock was enabled the whole time in the config byte

i.e. destroying my shit when i read back after sending a command

cooking me

it now works now

tho the idenitiy shit isnt correct and differs that is to be expected tm

WE ARE BALLING

[daring juniper]

🎉

[surreal path]

@brisk zenith some weird shit after i added prints to the reaper thread

trying to debug the oom issue

could this be a race condition

idk im lost whats going on

ill try to debug it some more but

i doubt ill find anything

hopefully when you wake up you can check this out, maybe this bit of information may help us get closer to this bug

[mossy belfry]

by thread here you mean core right

it's a little confusing to say thread when you mean a physically independent processor on the topology of the CPU lol

[surreal path]

no i mean thread

[mossy belfry]

oh interesting 🤔

[surreal path]

im not talking about the cpu

[mossy belfry]

how did you type on the console before this

[surreal path]

serial

[mossy belfry]

wait that's a thing

oh thanks for informing me

[surreal path]

yes

[surreal path]

another day more ps2 code

after we get this wired up we can put more focus on the oom issue

[ebon needle]

isn't finding ps/2 devices with uacpi is easier than ps/2 driver

[surreal path]

yes

[ebon needle]

why not to use this method

or nyaux is only tryhard ways kernel

[surreal path]

i use uacpi for it now

[thorn bramble]

discovering the preseence using acpi is one thing

actually talking to it is another thing

[surreal path]

^

[silver yarrow]

are u going to do proper oom handling

[surreal path]

no, i need to figure out the oom issue

if i oom i panic

thats not the issue

the way i handle that

i shouldnt be ooming in the first place

[silver yarrow]

ah

[surreal path]

i got interrupts from the ps2 keyboard and mouse now

cool

[broken depot]

Nice

[maiden ridge]

W

[surreal path]

ik im ballin

[surreal path]

fun fact, you can reset the whole system without even triple faulting the cpu. its called writing an unknown command to the ps2 controller ™

learnt that the hard way

or actually

no its an known command

it just

does somet weird electritty magic

smthin about a reset line

[maiden ridge]

Ok but I made garlic bread

[surreal path]

real??

can i have some??

[maiden ridge]

Real

[maiden ridge]

No

[surreal path]

[surreal path]

u should totally accept that fq i just sent you

[maiden ridge]

Ok

[surreal path]

lets gooo

today i became friends with a hammer

i am talking to myself essentially because hammers are not sentiant

i am going crazy

[maiden ridge]

Ps 2

Oh yeah qemu mouse emulation is fucky

[surreal path]

how so

[maiden ridge]

During the first 2-3 seconds qemu sends some weird fuck ass packets

[surreal path]

on boot or after resetting the mouse?

[maiden ridge]

Boot

[surreal path]

oh then im fine

i dont init the ps2 mouse until

a bit

[maiden ridge]

Still
The work around I had was ignore the mouse interrupt till a specific time period passed (usually 5 seconds)

[surreal path]

nah i should be fineee

nyaux aint loading in 3 seconds to ps2 mouse init

thats done before userspace init

and it takes a while for nyaux to unpack the tar

lol

[ebon needle]

no

idk how ps/2 but with usb its good

[maiden ridge]

Yeah usb it's fine

Ps2 is funky

[surreal path]

i think this is a good abstraction

[surreal path]

@elder shoal explain yourself

your only getting one byte???

when keys are mutiple bytes????

how does that work

[tawdry mirage]

if the first byte is 0xE0 it sets a flag and bails out early at the top of the isr

it still doesn't handle whatever the key with a 6 byte scan code was

[surreal path]

oh lol

[surreal path]

then it gets another interrupt for the rest of the bytes?

[surreal path]

wdym

[tawdry mirage]

this at most expects that a scan code is 2 bytes

but one key (print screen? idr) is like 6 bytes long

[surreal path]

yeaaa

and im gonna use scancode set 2

so

thats gonna cause more problems

[surreal path]

how could i get around this exactly

cause i actually wanna support this

lol

[tawdry mirage]

need a bigger state machine

[surreal path]

how so?

[brisk zenith]

in set 2 there's even an 8 byte one

[surreal path]

yea pretty much also hiii!!!

[brisk zenith]

hello

[tawdry mirage]

to keep track what bytes you've seen before in longer scan codes

e.g. in the initial state if you see 0xf0, you go to the release state, then from there if you get another byte, e.g. 0xab (ignoring longer codes) you know that the whole sequence was 0xf0 0xab

repeat for all prefixes

[surreal path]

wdym by ignoring longer codes

also how does byte f0 mean released

[tawdry mirage]

i am omitting them from the explanation for simplicity

[surreal path]

oh right

[surreal path]

yea wait

im seeing f0 means released for any key that is well

released

[surreal path]

wait how would this state machine look like?

lemme think cause

i wanna do this in a way

thats reasonable

and not shit

[kind root]

i wouldnt look at astrals code for ps2 lol

considering it doesnt work on any real hw lol

[surreal path]

what would i look at

[kind root]

welll

linux

or

maybe old ultra

[surreal path]

llinux sounds like pain

[kind root]

if you're familiar with the patterns they use etc its not that bad but yeahg

[surreal path]

ill try looking at it

[kind root]

https://github.com/UltraOS/UltraLegacy/blob/master/Kernel/Drivers/PS2/PS2Controller.cpp

this one should work

[surreal path]

epic

[kind root]

but its c++

[surreal path]

i have c++

basic knowledge

[kind root]

oh ok

[tawdry mirage]

the state graph looks something like this if i didn't fuck it up

edges indicate an incoming byte, states remember what came before

[surreal path]

you mean the line

[tawdry mirage]

(i'm also ignoring some broken states like F0 E1 xx and E1 F0 xx)

[surreal path]

also what is "any"

[tawdry mirage]

any byte value

[surreal path]

and what is rest

[tawdry mirage]

"rest" is any byte other than those on other edges

so from "initial" rest is all bytes but F0, E0, E1

[surreal path]

edge meaning incoming byte?

[tawdry mirage]

.

[surreal path]

i dont know what edges mean here, are they the lines in the graph 😭

[tawdry mirage]

yes

[surreal path]

okay

[surreal path]

meaning if it got another 0xE0

then reset the intial state

wait nvm

my brain rn

😭

[flat nymph]

my PS/2 code is semi-ok
And it's C

[surreal path]

i read c++ too

[flat nymph]

Though it's refusing to work on my laptop

Or like not really, but the controller doesn't give me the keyboard layout

[tawdry mirage]

i mean, if the user presses enter on the keypad the keyboard will send 0xE0 0x1C:
you start in the initial state
you get 0xE0
you move to the E0 state
you get 0x1C
you know you got the combination 0xE0 0x1C and you can decode it, and you go back to the initial state

[surreal path]

OHHHH

THAT MAKES SO MUCH SENSE

THANKS LOL

that sounds easy

[tawdry mirage]

actually i did fuck up the graph

[surreal path]

oh

[tawdry mirage]

there is no F0 before E0, that simplifies it :^)

also for E1

[surreal path]

ah oki

[tawdry mirage]

for the E1 xx state you do need to store what the xx is somewhere though

or you can add 256 individual states

[surreal path]

@kind root in Ultra you never call handle_action?

[tawdry mirage]

btw there's also another approach that might be simpler

instead of a state machine in the isr, in the isr just put the bytes in a queue and wake up a worker thread

then the worker thread just pulls bytes from the queue, and if the queue is empty it goes to sleep

then you can just do what we do in managarm (except we do it with coroutines instead of threads): https://github.com/managarm/managarm/blob/master/drivers/kbd/src/main.cpp#L917-L963

[surreal path]

is there a difference between a blocked and sleeping thread actually

rando question

i forgor about this

sorry for the stupid question lol

[surreal path]

also how do you know you reached the end of the scancode sequence

[kind root]

hm?

[surreal path]

yea you dont call it

at all

[tawdry mirage]

all edges that go back to "initial" are final bytes

[surreal path]

makes sense

[kind root]

what are we talking about

[surreal path]

handle_action in your ps2keyboard.cpp

you never call it anywhere in the kernel

i used github search

[kind root]

Kernel/Drivers/PS2/PS2Device.h: bool handle_irq(RegisterState&) override { return handle_action(); }

[tawdry mirage]

[surreal path]

insane

[surreal path]

why is any not called rest for E1 F0 xx F0 state

[tawdry mirage]

because E1 F0 xx F0 only has one edge leaving it

so it's all bytes

[surreal path]

okay let me try to get this, edge meaning transition to state, any meaning any key pressed, rest meaning decode and set state and then go back to the inital state

@tawdry mirage

is this correct?

[tawdry mirage]

any means any byte value, rest means any byte value apart from what the other edges have (so all except e.g. F0)

[surreal path]

OHHHH

thanks for explaining this @tawdry mirage

[elder shoal]

no you should that way I wont feel bad about being the only os with shit ps2 code

[kind root]

lol

[surreal path]

check this shit out

doom with input

[tawdry mirage]

key repeat is because ps/2 keyboards do that on their own

[surreal path]

pressing one key skips 2 menu selections

[tawdry mirage]

you can change the typematic rate with some command

[surreal path]

ik

also qookie i have a question

so you know when u reenable scanning for the ps2 kbd

[tawdry mirage]

ah

[surreal path]

even tho i have it set in the config byte not to send interrupts and to retry reenabling scanning if i didnt get an ACK, so basically if

i spam the keyboard

i dont get any interrupts at all

for some reason

[surreal path]

yea pretty much

[surreal path]

id assume you dont know whats going on from the lack of response

[tawdry mirage]

oh yeah no idea

[surreal path]

yea

fair

[surreal path]

solved by adding releaese key functionality

still suffering from the no interrupt tho

[mossy belfry]

it's giving 2016 bandicam

cool port bro

[elder shoal]

audio when

[surreal path]

thats crazy

oh yeah

i fixed most of the input shit

so you can play doom start to finish on nyaux

still having the funny interrupt ps2 spam bug tho

i mean

i lit am

im having fun

[surreal path]

fixed the issue with the interrupt shit

[edgy pilot]

ah good ol' days when doing my hobbies were fun

[surreal path]

just had to clear the data buffer

[surreal path]

im joking when im saying im having fun

im very much empty and depressed

[edgy pilot]

real

[surreal path]

only reason i do this project is cause distraction

[edgy pilot]

sadly I haven't been able to do anything recently

[surreal path]

now that ive fniished the ps2 shit and doom input

now i have to figure out that oom issue

guess ill get to work

[mossy belfry]

yo rayan a bit off topic but aren't you having trouble getting girls

I was skating today and some girl asked me out (but yk I don't swing that way) how can I setup a DNS or whatever and redirect their attraction to u 🙏🙏🙏

[maiden ridge]

Now give this iso to that one friend who will play a complete game of doom

[surreal path]

real

[maiden ridge]

Also Linus Torvalds is in the diddy files

[surreal path]

qhat??????????/#

[surreal path]

proof??

[maiden ridge]

It was revealed to me when I was hyperactive

[surreal path]

real

[daring juniper]

https://tenor.com/view/donkey-kong-country-frustrated-diddy-kong-angry-i-lost-gif-7996379198360787041

[maiden ridge]

Linus Torvalds was at the diddy party

[surreal path]

i cook and leave no crumbs

[magic kernel]

Nice work on doom

And I saw something about init systems way back

[surreal path]

thanks

[magic kernel]

Necroposting

But

Systemd or ban right

[surreal path]

[surreal path]

?

[magic kernel]

Oh the init system comment is old idk how old but old

Responding to old shit is also called necroposting

[surreal path]

fair

[magic kernel]

But yeah systemd

Or ban

Ezpz

[surreal path]

true

😭

[magic kernel]

(Unless no Linux interfaces planned and/or desired, then idk InitWare? Sysvinit? Openrc?)

[surreal path]

nah we def doing systemd

[magic kernel]

Aight

We ball

[thorn bramble]

ah yes nyaux netlink, cgroups, proc and sysfs

coming right up

[surreal path]

real

[magic kernel]

No time limit

So take your time

And cgroups can be stubbed to fuck lol

Look at Managarm, it does fuck all

Just does some hardcoded files and makes some directories

And identifies as cgroupv2 to please fstatat and friends

Honestly looked like the biggest painpoint but was in the end not too much work to get systemd to work with it

[surreal path]

fair

whats the biggest painpoint with system

what interface is the worsed

[magic kernel]

The details from dev and sysfs are meh (mostly udev related)
Netlink isn’t nice per se
I’d say epoll, timerfd, inotify, signalfd aren’t too bad

But there’s Managarm source code as a reference nowadays

Better than Linux only

[surreal path]

ah oki i see

[surreal path]

ok BEFORE we spend weeks trying to debug the oom issue only for @brisk zenith to find it in 10 minutes lemme hook up the ps2 keyboard to the fuckin tty

[silver yarrow]

lmao

[surreal path]

i mean

its true

that guy is a fuckin 20000 iq genius holy shit

default discord pfps are either the most intelligent people on earth or some 9 year old brainlet

its never in between

i swear

[surreal path]

ok i got input working with the tty

now heres a problem we encounter

doom wants to use the ps2 keyboard but the fuckin tty is already using it

because the ps2 keyboard uses a ring buffer

the tty gets the packet

and doom gets none

the tty

looking like

that but the doomgeneric program is just crying

[ebon needle]

i just sending keycodes to all pipes which requested input from ps/2 keyboard

[supple robin]

terrible advice

[mossy belfry]

in true unix fashion

[ebon needle]

https://tenor.com/view/gus-fring-tik-tok-eyedress-jealous-gif-24450629

anyway i dont want to use it

soon

[surreal path]

ok idea

after reading linux source code and thinking for a straight minute what we could do is have a subscriber system, everytime the keyboard writes a packet to the device file its "broadcasted" to every subscriber in some kind of list. each subscriber could have its own ring buf and whenever read is called it checks its fd handle data field for any subscriber ptr then reads from the subscriber ptr's buf and gives it to the read syscall

the only problem with this approach is that i need to fuckin implement vfs op open for the kernel nyaux does not have fds for kernel code yet, like userspace can get fds and eat it and chew it and swallow it but kernel code gets no water like africa so i need to have some vfs op

this is probs a day effort ™

[ebon needle]

I did almost the most

[mossy belfry]

wait wdym vfs open op

you can just have the fd represent an index in an array of vnodes, no?

what is harpenin

[surreal path]

no thats retarded

[mossy belfry]

😢

[rigid fable]

Thats a gem

[thorn bramble]

or you can do it properly

your choice

[worldly condor]

you can have multiple open files for the same vnode

open files have extra info

e.g. whether it is for read or write

[thorn bramble]

oh LMAO i did not even fucking read it properly

[worldly condor]

and the current position in the file

[thorn bramble]

that's INSANEEEE

WAHT IS THIS GUY SAYINGGG G

AHAHUFASUOIJLKGDS

[mossy belfry]

silly and whimsical suggestion

[worldly condor]

that's barely a step up compared to another proposal I've seen

[bleak cedar]

same person who made this pr btw
https://github.com/rayanmargham/NyauxKC/pull/10

[worldly condor]

namely open returning the on-disk directory index

[mossy belfry]

yes I'm very professional and definitely remembered how that macro worked

[bleak cedar]

it's not a macro

[mossy belfry]

idk why does it make a char array

[bleak cedar]

it's a local variable name

[mossy belfry]

oh oops

[worldly condor]

this diagram from Wikipedia sorta shows how it's supposed to work

[surreal path]

^

[bleak cedar]

because the C Preprocessor doesn't know anything about the semantics of C including what function names are, it's basically just text substitution

[worldly condor]

substitute inode by vnode on modern OSes

cuz

confusingly

in ancient UNIX, there was the familiar on-disk inode as a file system structure

and the in-core inode, which is what one would now call a vnode

or like

the file system-specific struct

cuz uh ... UNIX used to hard code support for only one file system

and VFS was added later to accomodate network file systems, FAT12 for floppy disks, etc ...

[mossy belfry]

wait so are open and close here just to create resource locks on nodes so we don't have like a bunch of requests trying to run at the same time or what

I never got around to doing those properly

[surreal path]

wtf is a resource lock 1. and 2. thats not how it works. open creates a fd handle, gives you that fd and whenever you wanna do shit you use ur fd to get the fd handle to which u do ur shit

[bleak cedar]

Ok I got a silly idea
Don't take it seriously
The three most insignificant bits of the fd could specify if it's

• readable
• writable
• executable

like
bit interpretation [actual file descriptor number | executable | writable | readable ]
bit number [31 .. 3| 2 | 1 | 0 ]

remember, this is only satirical

[mossy belfry]

how are u doing smp things without resource locks

[surreal path]

okay so um heres the thing

[mossy belfry]

lockless nyaux 😲😲😲

omg

peak codebase I will try to read it now

[surreal path]

i dont do locks where i should do, whenever i get around to implementing fuckin load balancing ill figure it out

[mossy belfry]

so if core A and core B wanna access the same thing you just let the race condition happen

understandable

[surreal path]

yes because all shit is running on core A rn

because no load balancing

[bleak cedar]

Gummi when a there's unfinished stuff in the development of an OS on a discord called Operating System Development

[mossy belfry]

uniprocessor multicore

[surreal path]

real

[mossy belfry]

real

[mossy belfry]

since you have had firsthand experience would you say PS2 KB is hard

[surreal path]

no i say i was being retarded and its really fucking easy

at least for qemu

real hw tho is a different story....

[mossy belfry]

I think I might already have this

[surreal path]

also @elder shoal i dont remember correctly but the way you inited the ps2 controller didnt seem correct? im not sure

[surreal path]

AH HELL NAH NOT ATTRIBUTE INTERRUPT

[mossy belfry]

ts is not that bad vro 🥀

[surreal path]

IT IS WHAT ARE U ON ABOUT

😭

[mossy belfry]

what is bad about it

[surreal path]

bro...

literarly everything

[mossy belfry]

hmm ok I already had a macro to do this

this was older code ig I'll use that

[surreal path]

all it does is replacing the return of the function with iretq

which is retarded

[mossy belfry]

"we have attribute interrupt at home"

[surreal path]

you need to save context

[surreal path]

yea ur def fucking ur stack because u have attribute interrupt and ur also doing this

remove that on all your interrupt handlers please

[bleak cedar]

@thorn bramble mentioned

[mossy belfry]

it was only that one 🧀

I think

idk I fogot

[surreal path]

remove it everywhere

do a fucking rg "attribute((interrupt))"

[mossy belfry]

hey wait a minute I don't think this is the case I remember it pushes callee saved registers

whatever

I'll remove it all

[bleak cedar]

Context switches when @surreal path switches her gender:

[surreal path]

[ebon needle]

wdym her

@surreal path dont i know something about you 🤔🤔🤔

[surreal path]

IM NOT TRANS

😭

[mossy belfry]

famous last words

[mossy belfry]

"cisgender rhymes with misgender" ahh statement

[mossy belfry]

I think I now rember how fd works

int sys_open(const char *path, uint32_t flags) {
    struct vfs_node *node = vfs_lookup(path);
    if (!node)
        return -ENOENT;

    if (node->ops && node->ops->open) {
        enum errno err = node->ops->open(node, flags);
        if (err != E_OK)
            return -err;
    }

    struct file *f = kmalloc(sizeof(struct file));
    f->node = node;
    f->flags = flags;
    f->offset = 0;
    f->read = node->ops->read;
    f->write = node->ops->write;
    f->close = node->ops->close;
    f->private_data = NULL;

    int fd = find_free_fd(current_process);
    if (fd < 0)
        return -EMFILE;

    current_process->fd_table[fd] = f;
    return fd;
}```

or something idk

whatever 💥

[surreal path]

that looks kinda correct

ish

ishhhh

theres a lot of things it shouldnt do tho

[worldly condor]

famous last words

[mossy belfry]

wdym

[surreal path]

im playing factorio ill tell u in a bit

[elder shoal]

I have not touched my ps2 code in over 6 months

[surreal path]

fair

[surreal path]

now i have 3 BUGS

3 HEISEN BUGS

[mossy belfry]

shockingly few

[surreal path]

oom issue + cat somehow locking up the whole system if i spam any ps2 key hard enough and its EXTREMELY difficult to trigger which makes it even worse + load elf somehow getting an error attempting to read the elf into memory

[surreal path]

3 fuckin bugs that are so hard to debug

because they are so hard to trigger

why cant i write code thats decent

why.

[silver yarrow]

relatable

[errant mantle]

just use rust /j

[nova fox]

lmao i love the /j

[silver yarrow]

rust wouldn't really solve most of the bugs I encounter

[surreal path]

im getting gpt to write a script to use the QEMU qmp protocol to spam text into the guest

then it will be possible to trigger this

[surreal path]

okay i can now get the cat /dev/keyboard bug to happen everytime

thanks to the script ™

[surreal path]

cat is closing stdout

wtf

somehow keyboard interrupt isnt firing anymore

lets check rflasg

ITS A DEADLOCK

YOO LETS FUCKING GO I FOUND THIS BUG

ITS DEADLOCKING SOMEWHERE

[edgy pilot]

my brain deadlocked

isn't that what clinical depression is

[surreal path]

yea real

[edgy pilot]

I need to wake up in less than 3 hours

[surreal path]

it deadlocks with the memory lock

????

wtf

[surreal path]

thanks to JW we can do this shit to debug our deadlock

i would do that but

im tired rn

maybe later

[mossy belfry]

did you fix it 😲😲😲

[surreal path]

no

i just know which lock it dies on

[thorn bramble]

@surreal path

in the ps2 keyboard interrupt

you are supposed to read all bytes the keyboard has queued up

not just one

the controller won't fire another interrupt until you have read everything

which would explain why it dies when you spam it

[surreal path]

but shouldnt i get one interrupt per byte???

?

[thorn bramble]

honestly idk

[surreal path]

yea it should be one interrupt per byte?

also

that wouldnt explain why it deadlocks the memory lock

if this is the cause

[thorn bramble]

u said u don't get interrupts

[surreal path]

yea i just deadlock in the mem lock

[thorn bramble]

that's not a reason to not get interrupts

unless you disable them

[surreal path]

yea tbf

[thorn bramble]

idk what a mem lock is lol

[surreal path]

its a lock around the kmalloc and kfree functions

[thorn bramble]

ok

[surreal path]

yea pretty much

[thorn bramble]

idk i still think you should read bytes until you can't

the apic can only buffer one interrupt

so if you press a key and you get an irq

then you press another key before you eoi

that will generate an interrupt

which will be delivered after you eoi

[surreal path]

and that gets buffered with the apic?

ah i see

okay

[thorn bramble]

but if you press two keys before you send an eoi

[surreal path]

thats probs why then

[thorn bramble]

you lose one interrupt

so you have two bytes in the buffer

but only one irq

[surreal path]

yea i see

[brisk zenith]

also if you happen to press two keys within a single irq critical section you'll only get one irq at the end of the critical section

so reading until the hardware says there's no more to read is important

[thorn bramble]

wow first actually good advice coming from me, that's crazy

time to get back to my kernel

[surreal path]

nah you have tons of good advice

[surreal path]

makes sense