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1321 Commits

Author SHA1 Message Date
Bananymous bb40069773 Kernel: Add nice debug prints for device addition/removal 2024-08-14 13:23:27 +03:00
Bananymous 37d5b60f5c Kernel: Implement AML {Event,Reset,Signal,Wait}Op 2024-08-14 11:59:34 +03:00
Bananymous feadea0e91 Kernel: Fix AML unaligned integer reads and buffer shifts over 32 2024-08-13 23:44:17 +03:00
Bananymous f71a29b6c4 Kernel: Implement AliasOp for AML interpreter 2024-08-13 22:42:37 +03:00
Bananymous ec4cfdee23 Kernel: Fix and cleanup a lot of AML code 
Node now have APIs to convert them to buffer, integer and string. This
allows possibility to handle methods that need explicitly use one of the
overloads instead of integer.

This patch also adds handling of DebugOp. This is used quite heavily in
uACPIs test suite.
 2024-08-13 22:42:37 +03:00
Bananymous dd79db6383 Kernel: AML implement CreateFieldOp 2024-08-13 18:52:48 +03:00
Bananymous 723e458bd7 Kernel/Terminal: Update terminal color themes and fix TTY bright/dark 2024-08-12 21:15:55 +03:00
Bananymous 39be57424c Kernel: Fix SYS_SEEK with SEEK_END 
I was subtracting the offset from file end when I should have added it.
 2024-08-12 19:13:27 +03:00
Bananymous f37e1c2229 Kernel: Map .rodata as read only instead of read-write 2024-08-12 14:28:52 +03:00
Bananymous 4d1b32f770 Kernel: open does not need TTY_INIT to set the controlling terminal 2024-08-11 01:02:59 +03:00
Bananymous a5a097fa4a Kernel/LibC: Add initial pseudo terminal support 
This patch implements posix_openpt() and ptsname()

grantpt() and unlockpt() are left in LibC as stubs, as posix_openpt
currently does all of the needed work.
 2024-08-11 01:02:59 +03:00
Bananymous ad645f31d0 Kernel/LibC: Add setsid() 2024-08-11 00:58:12 +03:00
Bananymous bac3219a01 Kernel: Fix `Pipe::can_read_impl()` 
The logic was inversed, which made all select calls report incorrectly
for pipes. This made terminal emulator just freeze.
 2024-08-10 18:18:25 +03:00
Bananymous 09a527fb12 Kernel: Fix scheduler thread counter 
I was actually never incrementing the counter :D
 2024-08-10 18:18:25 +03:00
Bananymous ed325b4a45 Kernel: Fix typo in userspace address validation 2024-08-09 16:52:57 +03:00
Bananymous 1c67b5e812 Kernel: Fix wait syscall to report status of exited children 2024-08-09 16:52:35 +03:00
Bananymous b6c964c444 Kernel: Rewrite pipes 
Pipes have now a fixed size buffer and pipe clone and close is working
again.
 2024-08-09 16:50:19 +03:00
Bananymous 44f0ec601f Kernel: Expose /proc/meminfo and fix /proc/<pid>/meminfo 
Thread was unconditionally calling <stack>->size() without validating
that the stack actually exists
 2024-08-09 15:58:56 +03:00
Bananymous 2a659a9d03 BuildSystem: Fix enable sse definition 
__enable_sse was never actually defined for any targets. This also adds
__arch definition for libc (so `utsname` works).
 2024-08-09 15:52:42 +03:00
Bananymous 7e7c3a1bb3 Kernel: VirtualTTY now handles dark colors 
I have seemingly forgot to add these before
 2024-08-09 15:52:42 +03:00
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
Bananymous 076f1efecb Kernel: Fix 32 bit fast page locking 
I forgot to change this when changing the lock type. 32 bit boots again
fine :D
 2024-05-29 19:44:39 +03:00
Bananymous 53e572f072 Kernel: Fix s_fast_page_lock type on 32 bit target 2024-05-29 18:04:23 +03:00
Bananymous d4d530e6c8 Kernel: Implement basic shared memory objects 
These can allocate memory that can be shared between processes using
a global key. There is currenly no safety checks meaning anyone can
map any shared memory object just by trying to map every possible key.
 2024-05-29 15:58:46 +03:00
Bananymous 99270e96a9 Kernel: Lock debug lock while printing fault details 
This allows multiprocessor to dump clean output on concurrent faults
 2024-05-29 15:49:24 +03:00
Bananymous 4bf7a08c80 Kernel: Allow SYS_PSELECT to work with timeout of zero 2024-05-29 15:32:18 +03:00
Bananymous 3823de6552 Kernel: Add templated get function for Random 2024-05-29 15:32:00 +03:00
Bananymous 8bc6c2eb20 Kernel: Move KeyEvent/MouseEvent from kernel to LibInput 2024-05-28 23:30:08 +03:00
Bananymous 87d52e5ebe Kernel: Fix timer early wake message 
When printing early return message, current time was read twice. This
could lead to early return check failing, but when printing and reading
the time again subtraction overflow would happen.
 2024-05-28 16:04:18 +03:00
Bananymous 598a09c13d Kernel: Allow select to work on any type of inode 2024-05-28 16:03:54 +03:00
Bananymous 18e2559b1e Kernel/LibC: Add SYS_TRUNCATE 2024-05-28 01:08:04 +03:00
Bananymous a1ab44d39f Kernel: Optimize disk reads to read multiple sectors at once 
Old StorageDevice::read_sectors() read each sector separately if the
underlying disk had a disk cache. This patch allows multiple sectors to
be read even if the disk cache exists and contains some of the sectors.

Only sectors that could not be found from the disk cache are actually
read from the disk. This optimization is not done for writing, which
still will write each sector separately, if disk cache has no memory to
store new sectors. It would feel kind of unnecessary optimization as you
have greater problems if disk cache cannot allocate a single page.
 2024-05-27 15:52:34 +03:00
Bananymous 8b1514e575 Kernel: Make all storage devices readable and writable 
I only had a {read,write}_impl defined for ATABaseDevice. This patch
moves that implmentation to general storage device.
 2024-05-27 13:41:55 +03:00
Bananymous 2d3810874d Kernel: Fix thread signal handling 
Threads will now only handle signals once they are not holding any
mutexes. This removes some dead locks.
 2024-05-26 20:08:35 +03:00
Bananymous 2a4d986da5 Kernel: Add preliminary support for PCIe 
Only segment 0 is supported, but devices can now be accessed through
mmio.

Adding more segments would require adding argument to every PCI API so
it is left for later.
 2024-05-25 20:50:07 +03:00
Bananymous df260fe0e8 Kernel: Process::validate_pointer_access now maps the whole range 
This fixes a bug where userspace provided address is not fully mapped
and the kernel tries to read/write it while using PageTable fast page.

In the future userspace input should be copied on syscall entry, so
userspace could not modify the input during syscall. Currently there
is change that userspace input passes kernel syscall validation and
after that userspace could modify the input before the value is
actually used.
 2024-05-24 14:14:17 +03:00
Bananymous 2be4fe8404 Kernel: Make PageTable::s_fast_page_lock non-recursive 
This lock is only used in wrapper of PageTable. There is no possiblity
of taking the lock outside of these wrappers.
 2024-05-24 14:12:35 +03:00
Bananymous 06f4b0b29a BAN: Make String and StringView header only 
This allows linking with libc without having to link ban
 2024-05-23 15:43:26 +03:00
Bananymous 83e3409bd8 Kernel/LibC: Update SYS_SEEK to return new offset and implement lseek 2024-05-23 14:49:23 +03:00
Bananymous 0af74fccda Kernel/LibC: Rework dirent structure 
dirent now contains statically sized d_name. This allows using
sizeof on the name and dirent properly, which some programs seem
to be using.
 2024-05-22 20:19:59 +03:00
Bananymous e77de1804f Kernel: Fix some race conditions in TCP stack 
Remove race condition if two acks are to be sent one after another.

Always unblock semaphore once TCP thread has done something. This
allows better chance of TCP sending to succeed.

There are multiple places in the networking code that would require
thread-safe entering to blocking mode. I should add some API for this
so that a lot of race conditions could be removed.
 2024-05-21 01:53:45 +03:00
Bananymous e00b92225d Kernel: Fix E1000 interrupt handling condition 
I had written the ICR register check backwards which lead to interrupt
handling only when it was not needed, and no handling when it was
needed. This somehow still worked, just much slower often requiring tcp
resends from the server.
 2024-05-21 01:52:19 +03:00
Bananymous e7e1dd91c7 Kernel: Implement ACPI reset 2024-04-22 21:12:13 +03:00
Bananymous 195c5e92a4 Kernel: Add floating bus detection for ATA Bus 2024-04-22 21:12:13 +03:00
Bananymous 26922ebb51 Kernel: Remove stack size check for keyboard layout initialization 
Keyboard layout loading can take around 1 KB of stack for i686 target
 2024-04-22 21:11:04 +03:00
Bananymous 693f90449f Kernel: Rework AML package and implement indexing in to packages 2024-04-19 11:26:48 +03:00
Bananymous 34b10f61ce Kernel: Make PIT reserve its IRQ 
PIT did not reserve IRQ leading to kernel panic if it was being
initialized.
 2024-04-18 13:34:28 +03:00
Bananymous 1479b42112 Kernel: Don't even loop over processor when system has only BSP 2024-04-18 13:33:52 +03:00
Bananymous bb061d2a0a Kernel: Make 32bit not use large pages during boot 
There is no guarantee that they are supported
 2024-04-18 13:33:15 +03:00
Bananymous 061012a268 Kernel: Fix signal trampoline 
32 bit did not even support it and 64 bit did not align stack
 2024-04-18 13:32:40 +03:00
Bananymous a698f91db4 Kernel: Fix PriorityMutex::try_lock() 
Forgot to check this when I updated Mutex::try_lock()
 2024-04-18 01:36:15 +03:00