Bananymous
7afdfb150f
LibC: Rewrite sigprocmask in terms of pthread_sigmask
...
Also don't fail SYS_SIGPROCMASK if how is invalid and set is NULL.
2024-08-07 17:01:35 +03:00
Bananymous
0a7c316ffb
Kernel: Fix race condition when blocking threads
...
If thread was blocked, but had not reached block queue, you might
already get an unblock request which would fail on an assertion.
If blocked thread was load balanced to another processor and unblocked
simultaneously, there was a race condition.
2024-08-05 20:14:13 +03:00
Bananymous
e72424e01a
Kernel: Implement ANSI CSI M and fix ANSI CSI L
...
There are not maybe not correct, but work much better than the old ones
2024-08-05 15:53:01 +03:00
Bananymous
a578527012
Kernel/LibC: Implement ioctl(TIOCGWINSZ)
...
This allows ncurses to get the window size!
2024-08-01 22:56:26 +03:00
Bananymous
af78a2d080
Kernel: Implement ANSI CSI L for TTY
...
vim seems to be using this, so I decided its needed
2024-08-01 22:08:46 +03:00
Bananymous
840000d02b
Kernel: Make sure null signal is not send with kill()
2024-08-01 21:41:54 +03:00
Bananymous
9ea4c777ad
Kernel: TTY now handles ESC key presses
...
This allows exiting vim :D
2024-08-01 21:41:11 +03:00
Bananymous
a33b63d066
Kernel/LibC: Implement alarm() and setitimer()
...
This makes vim able to start!
2024-08-01 21:09:56 +03:00
Bananymous
da3b30cd94
Kernel: Add macro to dump all syscalls and their return values
2024-08-01 18:21:49 +03:00
Bananymous
4599e1dec5
Kernel: Make schedler not crash when unblocking active thread
...
This was happening when sending signals to processes that were currently
running.
2024-08-01 18:21:49 +03:00
Bananymous
6de350ce9d
Kernel/LibC: Cleanup, fix and implement a lot of signal code
...
This patch implements sigsets and some of their usages
2024-08-01 17:01:18 +03:00
Bananymous
838d31fa41
Kernel: Implement more POSIX compliant open() and openat() syscalls
2024-08-01 15:35:02 +03:00
Bananymous
7c3b6307d9
Kernel: Cleanup USB initialization code
2024-07-31 23:23:44 +03:00
Bananymous
f0be4f86a6
LibC/Kernel: Implement access
2024-07-30 11:51:07 +03:00
Bananymous
e5bb843059
LibC/Kernel: Implement ttyname
2024-07-30 11:41:18 +03:00
Bananymous
681d8327f5
LibC/Kernel: Cleanup termios code
...
This is still not correct, but much better than it used to be
2024-07-30 11:10:43 +03:00
Bananymous
9bc02c81f8
Kernel: Map DMA and PCI MMIO as uncached
2024-07-30 11:10:08 +03:00
Bananymous
bb1738db8c
Kernel: Make thread unblocking O(1)
...
This is still bit broken. VirtualBox seems to freeze sometimes, but I
could not recreate this on qemu (with and without kvm) or real hardware.
2024-07-24 00:31:01 +03:00
Bananymous
9548c592a3
Kernel: Always print basic info about xHCI controller
...
Its nice to see that the controller is getting initalized
2024-07-23 09:09:08 +03:00
Bananymous
cda0276d39
Kernel: Force PCI irq line usage when not using APIC
...
afaik PIC does not support MSI
2024-07-23 09:08:00 +03:00
Bananymous
539afb329a
Kernel: All processors use LAPIC timer when running with APIC
...
This makes scheduler preemption much cleaner as bsb does not have to
send smp messages to notify other processes about timer interrupt.
Also PIT percision is now "full" 0.8 us instead of 1 ms that I was using
before.
2024-07-23 02:28:52 +03:00
Bananymous
3e0150f847
Kernel: Pressing F1 now toggles rendering of CPU loads to the terminal
...
This can be nice for seeing the performance and problems on the load
balancing algorithm.
2024-07-22 00:43:13 +03:00
Bananymous
f8261c60c0
Kernel: Rewrite the whole scheduler and re-architecture SMP handling
...
Change Semaphore -> ThreadBlocker
This was not a semaphore, I just named it one because I didn't know
what semaphore was. I have meant to change this sooner, but it was in
no way urgent :D
Implement SMP events. Processors can now be sent SMP events through
IPIs. SMP events can be sent either to a single processor or broadcasted
to every processor.
PageTable::{map_page,map_range,unmap_page,unmap_range}() now send SMP
event to invalidate TLB caches for the changed pages.
Scheduler no longer uses a global run queue. Each processor has its own
scheduler that keeps track of the load on the processor. Once every
second schedulers do load balancing. Schedulers have no access to other
processors' schedulers, they just see approximate loads. If scheduler
decides that it has too much load, it will send a thread to another
processor through a SMP event.
Schedulers are currently run using the timer interrupt on BSB. This
should be not the case, and each processor should use its LAPIC timer
for interrupts. There is no reason to broadcast SMP event to all
processors when BSB gets timer interrupt.
Old scheduler only achieved 20% idle load on qemu. That was probably a
very inefficient implementation. This new scheduler seems to average
around 1% idle load. This is much closer to what I would expect. On my
own laptop idle load seems to be only around 0.5% on each processor.
2024-07-22 00:33:50 +03:00
Bananymous
9f90eeab05
Kernel: Fix stack pointer OOB check
...
i686 does not push the stack pointer on interrupt when no CPL change
happens.
2024-07-22 00:27:08 +03:00
Bananymous
1ee37cb671
Kernel: Make sure stack is aligned on interrupts for i686 target
...
I just realized that only x86_64 aligns stack pointer when interrupt is
triggered.
2024-07-22 00:10:42 +03:00
Bananymous
8fe798de6d
Kernel: Make PIT counter atomic with spinlock
2024-07-21 18:56:41 +03:00
Bananymous
86b6714777
Kernel: Add command line option to boot without smp
2024-07-21 17:40:57 +03:00
Bananymous
77b5e6d44a
Kernel: Make ATABus use BAN::Atomic<> instead of gcc builtin atomics
2024-07-21 17:39:26 +03:00
Bananymous
ffe73165f9
Kernel: Fix PCI typo serail -> serial
2024-07-21 17:36:29 +03:00
Bananymous
96c7e9e29d
Kernel: Cleanup VirtualRange code
...
Virtual range does not need to look into the page table for mapped
physcial pages. It can (and should) just keep track of them itself.
2024-07-21 17:35:07 +03:00
Bananymous
02051ed60f
Kernel: Move keyboard kernel panic to the general input device
...
This will allow command to work without requiring it per keyboard driver
2024-07-21 17:33:38 +03:00
Bananymous
f49689caac
Kernel: Implement API for sending IPIs for only one processor
...
Also move the spin wait to check for pending IPI sends to the start of
ipi sending function. There is no need to wait for IPI send succeeding
right after it. It is enough to make sure there are not multiple IPIs
being sent at the same time.
2024-07-21 17:30:59 +03:00
Bananymous
974b9b992d
Kernel: Fix process exiting infinite loop
...
If process was exiting and had a process waiting for it and that waiting
process got interrupted, the exiting process could never exit.
2024-07-18 21:40:44 +03:00
Bananymous
4b917390ac
Kernel: Fix sse state saving
...
This was broken when I added SMP support. This patch makes sse kind of
dumb as it is saved and restored on every interrupt, but now it at least
works properly... I'll have to look into how sse can get optimized
nicely with SMP. Simple way would be pinning each thread to a specific
processor and doing pretty much what I had before, but sse thread saved
in processor rather than static global.
2024-07-16 23:15:11 +03:00
Bananymous
7a0fb9a57f
Kernel: Fix TTY scroll clearing first and/or last characters from line
2024-07-16 22:49:49 +03:00
Bananymous
58fcd2b2fe
Kernel: Fix multi-interface USB device initialization
2024-07-16 22:29:18 +03:00
Bananymous
e30952efee
Kernel: Implement key repeating for USB keyboard
...
USB keyboards don't send repeating keys automatically, so it has to be
emulated in software.
2024-07-16 11:54:57 +03:00
Bananymous
1337758660
Kernel: Make USB HID interfaces configure all endpoints
2024-07-16 00:23:26 +03:00
Bananymous
339e8a7910
Kernel: Fix USB keyboard state updating with variable reports
2024-07-16 00:03:00 +03:00
Bananymous
a60b460701
Kernel: Update USB HID code to support multiple top-level collections
...
This allows me to use my laptops own keyboard!
2024-07-16 00:01:53 +03:00
Bananymous
a5cb4057f9
Kernel: Implement unified input files for device hot-plugging support
...
/dev/keyboard and /dev/mouse can be read for events from any attached
keyboard or mouse respectively. This makes device hot-plugging support
pretty much automatic for TTY, GUI, and whatever takes input.
2024-07-15 22:11:15 +03:00
Bananymous
9d7f97ccd5
Kernel: Implement DevFileSystem::remove_device
...
This function cleanly removes the devices from the whole filesystem.
USB devices are now removed from the filesystem as soon as they are
destroyed.
2024-07-15 22:10:42 +03:00
Bananymous
0578d41500
Kernel: Implement WriteCombining memory
...
This makes framebuffer much faster on real hardware
2024-07-15 22:09:09 +03:00
Bananymous
42c3fa24f0
Kernel: Add support for HID Report ID and parsing all collections
...
Only the first top-level collection is used for the device, but that
seems to generally be what keyboard and mouse use for input.
2024-07-15 15:51:07 +03:00
Bananymous
60b396fee5
Kernel: Add mouse move and scroll event merging back
...
This makes mouse work much faster when reading can't keep up with the
amount of events.
2024-07-15 15:45:20 +03:00
Bananymous
4cd9252ff6
Kernel: Fix USB code
...
Fix USB Keyboard scan code table for bottom row of keyboard
Support multiple interfaces on a single USB device
Add usb mouse to default qemu settings
2024-07-15 11:48:48 +03:00
Bananymous
75875d3a8f
Kernel: Set interval and average trb length on configure endpoint
...
Real controllers seem to require this while spec 4.8.2.4 says that they
should be left as zero.
2024-07-15 11:46:28 +03:00
Bananymous
86e9d92ecb
Kernel: Take ownership of xHCI controller from bios
2024-07-14 03:31:35 +03:00
Bananymous
baa4e6475a
Kernel: Implement basic USB Mouse
...
This has the same problem I described in previous commit for keyboard
2024-07-14 02:11:32 +03:00
Bananymous
ac5c77ee2c
Kernel: Implement USB Keyboard
...
This is kinda hacky, as I had disable the PS/2 initialization so that
usb keyboard gets /dev/keyboard0. I should add device hot plugging
support for TTY and GUI...
2024-07-14 02:09:18 +03:00
Bananymous
1efc6a1385
Kernel: Implement simple USB HID driver
...
This should be easily expandable to add HID devices
2024-07-14 02:04:48 +03:00
Bananymous
749be67df3
Kernel: Fix cxxabi for function static variable guards
2024-07-14 01:53:50 +03:00
Bananymous
a97a574718
Kernel: Rewrite the whole input system
...
PS/2 code is now kind of messed up, but it works. Keyboards and mice are
now an abstract class that is automatically exposed to userspace. This
will make adding USB input much nicer.
2024-07-14 01:53:50 +03:00
Bananymous
f120da3aca
Kernel: USB device now sets the current configuration
2024-07-12 11:26:06 +03:00
Bananymous
240684bc1f
Kernel: Refactor some xHCI code and add new definitions
2024-07-12 11:25:24 +03:00
Bananymous
e905634343
Kernel: Fix bugs and cleanup USB and xHCI code and API
2024-07-11 14:10:55 +03:00
Bananymous
14dce1abac
Kernel: Start work on USB stack
...
Current code can enumerate all xHCI devices and detect their type based
on the class code on device or interface descriptors.
2024-07-10 12:06:00 +03:00
Bananymous
5dc441c4af
Kernel/userspace: Implement KD_LOADFONT and loadfont program
2024-07-03 09:02:49 +03:00
Bananymous
f18c33563d
Kernel: Fix PCI MSI-X allocation
2024-06-30 20:36:43 +03:00
Bananymous
08cbd009ac
Kernel: PCI don't report multi function bit with header_type()
2024-06-29 22:11:55 +03:00
Bananymous
3d4219bfee
Kernel: Don't panic if nvme initialization fails
2024-06-29 22:07:55 +03:00
Bananymous
1a844426c3
Kernel: Add fast path for framembuffer sync if bpp == 32
2024-06-28 23:34:11 +03:00
Bananymous
42237a3bc8
Kernel: Implement fast scrolling for TTY
2024-06-28 23:15:03 +03:00
Bananymous
48a76426e7
BAN: Add more APIs for Atomic and make compare_exchage take a reference
2024-06-28 21:47:47 +03:00
Bananymous
31568fc5a1
Kernel: Rewrite Sockets to not be TmpInodes
...
TmpInodes just caused issues because TmpFS kept them alive. There was
really no reason for sockets to even be stored inside a TmpFS...
2024-06-27 00:35:19 +03:00
Bananymous
cb07142832
Kernel: ACPI allow more calling or \_S5
...
Spec says that \_Sx must have 4 fields, but virtual box seems to only
have the two defined once. This patch allows shutodown on virtual box
2024-06-25 23:25:10 +03:00
Bananymous
60a05412c9
Kernel: ACPI implement SizeOf
2024-06-25 23:24:51 +03:00
Bananymous
0179f5ea09
Kernel: ACPI add \_OS string
2024-06-25 23:24:19 +03:00
Bananymous
f671ed7e3f
Kernel: ACPI implement integer stores to registers as copies
...
Before storing const integer and then modifying the register it would
error.
2024-06-25 23:23:52 +03:00
Bananymous
2fccff5a35
Kernel: Implement ACPI IndexOp into Strings
2024-06-25 23:23:00 +03:00
Bananymous
af4b138094
Kernel/LibC: Implement realpath
...
realpath is implemented as a syscall. This is not really required but it
was the easiest way to get it working as there is already path
canonicalization at kernel level.
2024-06-25 19:32:40 +03:00
Bananymous
25099b4c98
Kernel: Don't validate O_SEARCH for non-directories
2024-06-25 19:27:55 +03:00
Bananymous
d7b8458a56
Kernel: Fix TCP sending
...
TCP send was effectively always waiting for connection to close and then
return a value of 0.
2024-06-25 11:04:03 +03:00
Bananymous
67dfe0bcf3
BAN: Allow String::formatted to fail
2024-06-25 11:04:03 +03:00
Bananymous
9e1b5cbaab
BuildSystem: Cleanup CMake code to allow libc only installation
...
There was no way to just install libc which is required for stdlibc++
2024-06-21 01:45:14 +03:00
Bananymous
4f0457a268
Kernel: Rewrite a lot of TCP code and implement TCP server sockets
...
TCP stack is now implemented much closer to spec
2024-06-20 13:26:50 +03:00
Bananymous
bce16cdd6e
Kernel: Fix how socket closing works
...
Sockets are now closed only when they are not referenced any more. This
allows child process to close socket and still keep it open for the
parent.
2024-06-19 10:39:44 +03:00
Bananymous
ad6d95ba52
BuildSystem: Rework the whole cmake build system
...
Now files are installed using the install() command instead of manually
copying files to their destinations. This allows automatic recompilation
of headers that did not work previously
2024-06-19 09:40:03 +03:00
Bananymous
318ce5dec8
All: Fix a lot of compiler warnings from header files
...
While reworking build system, header files started to report warnings.
2024-06-18 23:02:10 +03:00
Bananymous
c69919738b
BuildSystem: Move all userpace libraries under the userspace directory
...
As the number of libraries is increasing, root directory starts to
expand. This adds better organization for libraries
2024-06-18 13:14:35 +03:00
Bananymous
f1e366d36f
Kernel: Free keyboard mutex while waiting for data to read
...
This was making select hang if one thread was trying to read from
keyboard.
2024-06-17 23:04:37 +03:00
Bananymous
be7ed8e74a
Kernel/LibC: Implement {get,set}sockopt()
...
These are pretty much dummy functions in the kernel side. Only case that
is handled is SOL_SOCKET with SO_ERROR. This is hard coded to return no
error. Network stack is currently synchronous, so all errors are already
reported through synchronous network functions.
2024-06-17 20:56:48 +03:00
Bananymous
cad55a4da5
Kernel/LibC: Implement getsockname for ipv4 sockets
2024-06-17 20:54:45 +03:00
Bananymous
511fc870a1
BAN: Mark RefPtr and WeakPtr operator bool() as explicit
2024-06-17 20:19:36 +03:00
Bananymous
ea7fc7f6c4
Kernel: Implement read-only FAT12/16/32 driver with long name support
...
You can now mount FAT filesystems! This code might not work perfectly
but my quick testing seemed to work on all (FAT12/16/32) variants.
2024-06-14 01:04:12 +03:00
Bananymous
6b1d5d28be
Kernel: VFS root now has to be block device instead of partition
2024-06-14 00:19:12 +03:00
Bananymous
766439db6d
Kernel: Start work on adding support for new filesystems
...
Old code tried to create ext2 filesystem from all devices.
2024-06-11 10:50:26 +03:00
Bananymous
d4903caafa
Kernel: Combine consecutive mouse move and scroll events
...
This makes mouse work much smoother when running without kvm.
2024-06-11 00:07:31 +03:00
Bananymous
ffacff67cf
LibFont: Move PSF code to separate file
2024-06-10 16:10:05 +03:00
Bananymous
530c259e71
Kernel: Close unix domain socket when it gets destoyed
...
Inode closing is something that needs a complete rework. Currently all
sockets are closed when close() is called, which leads to connection
closing if you fork()/exec() with socket being marked as CLOEXEC.
Inodes should probably only be closed once they are not referenced
anywhere.
2024-06-03 18:06:01 +03:00
Bananymous
765ccfa18c
Kernel: Deliver SIGCHLD on process exit and ignore it properly
2024-06-03 17:58:24 +03:00
Bananymous
bd1290706a
Kernel: Implement SharedMemoryObject cloning
2024-06-03 03:41:00 +03:00
Bananymous
aec5a09caf
Kernel/LibC: Implement SYS_ISATTY and isatty()
2024-06-03 03:36:25 +03:00
Bananymous
446220494e
Kernel: Unix domain sockets close can now be detected
...
When a unix domain socket is closed and it has a connection to another
socket, it will make the other socket readable and recv will return 0.
This allows detection of socket closing
2024-06-02 16:48:55 +03:00
Bananymous
8bfacb0091
Kernel: Implement deletion of SMO objects
2024-05-31 13:04:23 +03:00
Bananymous
0501f3bd99
Kernel: Move font code to its own library LibFont
2024-05-31 10:47:05 +03:00
Bananymous
84b3289a2a
Kernel: Move Scheduler::yield() lock check after interrupts disabled
...
I have no idea why this solves a bug where current processor has
scheduler lock at the beginning of yield.
2024-05-31 02:56:39 +03:00
Bananymous
b760892de2
Kernel: Make pselect use nanosecods instead of milliseconds
2024-05-31 02:56:17 +03:00
Bananymous
6840a8983c
Kernel: Make sure MSB is not set on SMO keys
2024-05-29 20:01:12 +03:00
Bananymous
a1b3490764
Kernel: Improve random number generation for unsigned types
2024-05-29 20:00:47 +03:00