Sinipelto
/
banan-os
forked from Bananymous/banan-os
1
0
Fork 0
Code Pull Requests Activity
3,135 Commits 1 Branch 0 Tags 3.9 MiB
Commit Graph

1699 Commits

Author SHA1 Message Date
Bananymous 857b3e92f8 Kernel: Support initializing USB 3 devices 2024-11-21 13:40:16 +02:00
Bananymous 8bf14d542e Kernel: Move SCSI device rdev allocation out of ATA code 2024-11-21 13:36:59 +02:00
Bananymous 97718b4046 Kernel: Don't launch init process twice 
I had accidentrally left the old init process launch in when replacing
it with the new one.
 2024-11-19 20:43:38 +02:00
Bananymous c07fd265f0 Kernel: Add support for ATA CHS addressing and cleanup code 
I thought that I had an PC without LBA support so I implement support
for CHS. Turns out that my ATA device detection was broken and was no
device on that port and initialize data was just garbage.

Now that I added CHS, I guess I should just keep it in :)

Both ATA read and write are now combined into a single function to avoid
code duplication.
 2024-11-19 20:39:32 +02:00
Bananymous 1de50a2a94 Kernel: Improve ATA device initialization 
This does better detection of empty ports and fixes floating bus
read-value from 0x00 to 0xFF.
 2024-11-19 00:25:42 +02:00
Bananymous 627ca432cc Kernel: Make PS/2 controller not hang if device keeps sending resend 2024-11-19 00:18:48 +02:00
Bananymous 71563034a7 Kernel: Remove accidentally left debug prints 2024-11-18 03:45:07 +02:00
Bananymous aaff5a65e1 Kernel/init: /dev/tty is now custom symlink to controlling terminal 
kernel now passes the name of default console to init process so init
knows which file to open as stdio. before /dev/tty was referencing the
system wide current terminal which was inherited from cmdline. This
doesn't work anymore as we have pseudo terminals implemented that can
chage the current terminal during runtime :D
 2024-11-17 22:38:52 +02:00
Bananymous 458a362f98 Kernel: Allow kernel to pass arguments to init process 2024-11-17 22:38:02 +02:00
Bananymous f206e72447 Kernel: Don't require msync addresses to be page aligned 
Inodes implementing msync can require page aligned addresses, but are
also allowed to not :) This reduces sizes of framebuffer msyncs!
 2024-11-17 20:15:28 +02:00
Bananymous 58e45fb394 Kernel: Print process name on exceptions if it is available 2024-11-17 20:15:28 +02:00
Bananymous 5e8fdc997a Kernel: Prevent userspace from overwriting CPU load memory 2024-11-17 20:15:28 +02:00
Bananymous 0228cd4f31 Kernel: Increase userspace stack size and decrease kernel stack 
Quake II needs a lot of stack, it was overflowing my 256 KiB stack so
this patch doubles that, so Quake II can run!

Also every thread had 256 KiB kernel stack. This is unnecessarily large
and now dropped to 32 KiB.
 2024-11-14 21:03:04 +02:00
Bananymous 64c52012df Kernel: Fix MemoryRegion overlap comparison 
This made some calls to `munmap` unmap extra regions.
 2024-11-13 17:26:42 +02:00
Bananymous 1838ea5c30 Kernel: Fix pseudo terminal leaks 2024-11-04 15:35:07 +02:00
Bananymous a3f41fd4d9 Kernel: Cleanup disk cache 
Add missing include and cleanup code calling automatic disk sync.
 2024-11-03 20:28:15 +02:00
Bananymous f4be37700f Kernel/userspace: rework floating point math 
SSE is now unconditionally enabled any where and most of math.h is now
actually implemented. using __builtin_<func> lead to many hangs where
the builtin function would just call itself.
 2024-11-03 20:28:15 +02:00
Bananymous ed19bb11fe Kernel: Cleanup thread default sse initialization 2024-11-03 20:22:28 +02:00
Bananymous 8fd0162393 Kernel: Rewrite x86_64 page tables to use HHDM instead of kmalloc 
This allows page tables to not crash the kernel once kmalloc runs out of
its (limited) static memory.
 2024-10-14 11:40:30 +03:00
Bananymous f0b18da881 Kernel: Add kmalloc helper APIs 2024-10-14 11:39:04 +03:00
Bananymous 5f63ea8f8a Kernel: Add CPUID check for 1 GiB page support 2024-10-14 11:38:03 +03:00
Bananymous 2b43569927 Kernel: Use enums in boot info instead of magic values 2024-10-14 11:36:51 +03:00
Bananymous 4ba33175cf Kernel: Don't leak memory when preparing fast page 
For some reason I was allocating memory for page table entry...
 2024-10-14 11:34:48 +03:00
Bananymous 3edc1af560 Kernel: Don't map main bios area in page table initialization 
This is only needed for RSDP lookup so it can be done with fast pages
 2024-10-14 11:32:54 +03:00
Bananymous 55fbd09e45 Kernel: Rewrite physical memory allocation with PageTable::fast_pages 2024-10-14 11:32:54 +03:00
Bananymous 166550fbba Kernel: Ext2 check if file exists before creating it 2024-10-07 18:21:05 +03:00
Bananymous b6e040dfc2 Kernel/Shell: Fix backspace and delete key byte sequences 2024-10-04 04:14:47 +03:00
Bananymous 2d11ce9669 Kernel: Fix interrupt system 
I had not understood how MSIs work and I was unnecessarily routing them
through IOAPIC. This is not necessary and should not be done :D

Also MSIs were reserving interrupts that IOAPIC was capable of
generating. Now IOAPIC and MSIs use different set of interrupts so
IOAPIC can use more interrupts if needed.
 2024-09-27 15:31:31 +03:00
Bananymous b89fc3fe87 Kernel: Implement ANSI SGR 7 to invert colors 
This allows vim's visual selection to show up
 2024-09-26 15:08:11 +03:00
Bananymous 39802b56c1 Kernel: Allow SYS_EXEC to fail at any point 
This patch builds new executable image to another pml4 structure and
only after everything is validated will current context be replaced.
This allows exec to fail "late" where previously it would panic the
kernel or kill the process. This allows graceful handling of exec
failures in userspace!
 2024-09-24 16:29:38 +03:00
Bananymous ebb87ccdde Kernel: Add asserts for overflow checks with ms -> ns conversions 2024-09-24 16:28:44 +03:00
Bananymous f0e55938c1 Kernel: Allow initial binding of threads to specific processor 2024-09-24 16:27:40 +03:00
Bananymous 348d04f7f5 Kernel: Implement static Process::kill() 
This allows killing processes even when there does not exist a current
thread.
 2024-09-24 13:16:43 +03:00
Bananymous d395cf38b7 Kernel: Binding to port 0 will always find unused port 2024-09-22 17:30:01 +03:00
Bananymous 57aec2a733 Kernel: Validate pointer's when printing stack trace 
There was an kernel panic if stack trace contained uncanonical
addresses.
 2024-09-22 17:16:01 +03:00
Bananymous ae89237453 Kernel: Disable warning when calling syscall 
This warning is only generated when compiling with UBSAN and I don't see
how the value would even be uninitialzed.
 2024-09-22 17:15:07 +03:00
Bananymous 60d5257678 Kenrel: Add __builtin_unreachable support for UBSAN 2024-09-22 17:14:36 +03:00
Bananymous d59463d11b Kernel: Fix TTY reading one keyevent after disabling input handling 2024-09-22 17:13:10 +03:00
Bananymous 23d6205659 Kernel: Move DEBUG_* macros to centralized Debug.h 
This makes toggling debug info much easier
 2024-09-20 11:00:07 +03:00
Bananymous bc0acc6f44 Kernel: Validate network packet sizes before casting 
This caused a lot of crashes on invalid packets :D
 2024-09-20 10:46:59 +03:00
Bananymous b8622f2b4b Kernel: Implement simple RTL8169 driver 
This allows me to use internet when running banan-os on my hardware!
 2024-09-19 22:58:03 +03:00
Bananymous 7f0c39fe91 Kernel: Don't crash the kernel if packet is smaller than ethernet hdr 2024-09-19 22:51:55 +03:00
Bananymous a489be0e05 Kernel: Allow parallel LAPIC timer initialization with HPET 
HPET supports reading LAPIC counter without locks, so it can be done in
parallel. This makes booting much faster. Previously initializing every
timer took 100 ms, so 16 CPUs took total of 1.6 seconds. This allows
doing it all in 100 ms.
 2024-09-19 14:41:59 +03:00
Bananymous 8e08046519 Kernel: Add asserts about having locked TTY's write lock 
This for some reason fixes booting on real hardware? :D
 2024-09-18 00:56:48 +03:00
Bananymous 999eb53364 Kernel: Release debug lock if its locked during kernel panic 
Also kernel panic now prints if it had lock
 2024-09-18 00:56:02 +03:00
Bananymous 0620ed3d4f Kernel: Fix file open permissions for some syscalls 2024-09-17 19:11:48 +03:00
Bananymous b779b3cf2d Kernel: Move file finding code to a helper 2024-09-17 18:52:52 +03:00
Bananymous e431e90b20 Kernel/LibC: Implement all chown family function with fchownat 2024-09-17 18:35:01 +03:00
Bananymous 4aa466b948 Kernel/LibC: Implement all chmod family functions using fchmodat 2024-09-17 17:19:26 +03:00
Bananymous 3666525d24 Kernel/LibC: Implement `readlink` in terms of `readlinkat` 2024-09-17 16:38:15 +03:00
Bananymous f1a4bbce53 Kernel/LibC: Implement all stat family functions with fstatat 
This patch gets rid of 2 unnecessary syscalls!
 2024-09-17 16:38:01 +03:00
Bananymous 708a720d9d Kernel: Remove SYS_OPEN 
This can be done with SYS_OPENAT with fd set to AT_FDCWD
 2024-09-17 16:16:47 +03:00
Bananymous 5e4aa75e03 Kernel: Perform access checks when creating a file or a directory 
Also SYS_CREATE_DIR now uses correct relative path. It used to always
create files relative to root. And as no permission checks were tested,
file creation succeeded to root as long as path did not contain '/' :D
 2024-09-17 15:57:07 +03:00
Bananymous d88ee5c9ee Kernel/LibC: Implement `creat` with `open` 
This allows getting rid of unnecessary SYS_CREATE. Directory creation
still has its own syscall, but I could combine it with SYS_OPEN also.
 2024-09-17 15:55:53 +03:00
Bananymous d4ea720239 Kernel: Don't crash the kernel if ext2 encounters disk error 
This will most likely result in a corrupted filesystem, but crashing the
kernel is too much :D
 2024-09-17 15:54:33 +03:00
Bananymous 97ee370ffe Kernel: Allow listing files even if one of directories blocks are empty 2024-09-17 15:53:14 +03:00
Bananymous a084f83f4c Kernel: Rework kernel-side ELF loading 
ELFs are now loaded as MemoryRegions so they don't need special handling
anywhere. This also allows file backed COW optimizations to work. This
was not the case before.

This patch removes now obsolete LoadableELF and unused ELF files from
LibElf.
 2024-09-15 23:57:34 +03:00
Bananymous 54732edff4 Kernel: Fix bugs in memory regions 
MemoryRegion::initialize() required size to be page aligned, this is not
necessary.

MemoryBackedRegion::copy_data_to_region() required user-write
permissions for underlying data. This did not matter as memory backed
regions dont support COW memory, but it could lead to bugs later on.
 2024-09-15 23:18:05 +03:00
Bananymous 7feb4c4ebd Kernel: VFS::file_from_absolute_path now used root_file() API 2024-09-15 02:38:25 +03:00
Bananymous 2911d1f018 Kernel: Cleanup and fix pseudo terminals 2024-09-15 02:38:07 +03:00
Bananymous d68ad893f0 Kernel/Shell: Add support for delete key 2024-09-14 22:45:48 +03:00
Bananymous 39667de662 Kernel: Fix sizeof check for sys_tc{set,get}attr 2024-09-14 21:17:03 +03:00
Bananymous 8956835d95 Kernel: Make sys_.*at use VFS relative path finding 2024-09-14 21:15:58 +03:00
Bananymous ea4ec2eafc Kernel: Make OpenFileDescrptor store VFS::File instead of inode+path 2024-09-14 20:10:21 +03:00
Bananymous 3a352078de Kernel: Make VirtualFileSystem::File non copyable 2024-09-14 20:09:28 +03:00
Bananymous 6060b39548 Kernel: Implement relative file searching in VFS 2024-09-14 19:44:20 +03:00
Bananymous 2b52ea4c6f Kernel: Make Inode::can_access const 2024-09-14 19:39:41 +03:00
Bananymous b41738b47b Kernel: Fix ACPI name formatting functions 2024-09-14 19:39:13 +03:00
Bananymous 57e76a65a4 Kernel: Null terminate ext2 directory entries 
This fixes a weird bug with `ls /bin`
 2024-09-12 23:55:34 +03:00
Bananymous 467ac6c365 Kernel/LibC: Implement SOCK_CLOEXEC and SOCK_NONBLOCK 
This removes the need for fcntl after creating a socket :)
 2024-09-11 21:59:11 +03:00
Bananymous c77ad5fb34 Kernel: Implement copy-on-write memory for file backed `mmap`s 2024-09-11 19:33:50 +03:00
Bananymous 64a3893f6f Kernel: Add command line option to disable AML parsing 
This can be handy if my broken AML parser crashes or hangs while parsing
AML :D
 2024-09-10 16:20:24 +03:00
Bananymous eabe759ebf Kernel: Don't require APs that are not started to start :D 2024-09-10 16:19:43 +03:00
Bananymous a4838386e6 Kernel: Remove unnecessary branch from uncanonicalizing addresses 2024-09-10 16:19:16 +03:00
Bananymous c65613901f Kernel: Fix AML aliases and package elements 2024-09-10 16:18:42 +03:00
Bananymous de35cec2e1 Kernel: Allow private file mappings past file end 
This is just to make memory mapping ELF files easier :D
 2024-09-05 14:48:42 +03:00
Bananymous 2f241e1b61 Kernel: Implement FileBackedRegion::clone 2024-09-05 13:59:09 +03:00
Bananymous f30947336a BuildSystem: Cleanup cmake files 2024-09-05 12:52:25 +03:00
Bananymous 1138ec77ca Kernel: Fix MemoryBackedRegion cloning for non page aligned size 2024-09-04 21:14:26 +03:00
Bananymous ddf1babfe1 Kernel: Cleanup constructor calls 2024-08-31 02:23:08 +03:00
Bananymous ef5af384e7 Kernel: Print userspace invalid pointer access address 2024-08-30 15:34:37 +03:00
Bananymous a134d16070 Kernel: Fix MemoryRegion test for contains_fully 2024-08-30 15:33:58 +03:00
Bananymous 827eec6af0 Kernel: Make .rodata read-only and add -orphan-handling=error 
I don't really know why .rodata was marked writable :D
 2024-08-30 15:33:02 +03:00
Bananymous 8da2f12ba6 Kernel: Only load program headers of interpreter if its present 
I was loading program headers of both executable and interpreter but
that is incorrect. The interpreter will itself load the program headers
of the executable.
 2024-08-28 21:19:37 +03:00
Bananymous 2bf65ef512 Kernel: Invoke ELF interpreter instead if it is specified 2024-08-28 17:06:32 +03:00
Bananymous d20752c318 Kernel: Make OpenFileDescritorSet::open take rvalue 
This gets rid of some implicit allocations from copy constructors
 2024-08-28 16:36:10 +03:00
Bananymous 5f66ef34dd Kernel: map userspace arguments after the entry point 
This allows cleaner memory layout for processes that are not loaded to
default location
 2024-08-27 22:46:08 +03:00
Bananymous da0b4cd40e Kernel: Allow MAP_FIXED in mmap 2024-08-27 22:45:49 +03:00
Bananymous 2c520391eb Kernel/LibC: Add support for init_array and fini_array 2024-08-27 00:47:03 +03:00
Bananymous 7c4b9218f2 Kernel: VirtualTTY now resets ansi state before printing anything 2024-08-25 17:56:06 +03:00
Bananymous 72f8138ca1 Kernel: Disable scheduler load balancing until I get it fixed 
Scheduler keeps crashing all the time when running on multiple cores.
This patch disabled the load balancer, which seems to get rid of most
scheduler crashes.
 2024-08-25 15:37:17 +03:00
Bananymous 991ae4383a Kernel/LibC: Implement fchmod 2024-08-25 15:07:42 +03:00
Bananymous 2ce7205c80 Kernel: Add command line option to disable debug printing 
The whole system can crash when debug output and tty output are done at
the same time. This patch is just a hack to prevent the crash :D
 2024-08-25 15:02:15 +03:00
Bananymous fb35f06cf5 Kernel: Add better support for bootloaders loading the kernel 
Before I assumed that bootloaders loaded the kernel at physical address
0, but this patch kinda allows loading to different addresses. This
still doesn't fully work as kernel bootstrap paging relies on kernel
being loaded at 0
 2024-08-22 14:48:21 +03:00
Bananymous abc788c756 Kernel: Improve output message when dumping all syscalls 2024-08-22 14:48:21 +03:00
Bananymous 63b616dc2e Kernel: Hack non-blocking support for sockets 
This is not thread safe and can still block if two programs refering to
the same socket try to read data at the same time
 2024-08-22 14:48:14 +03:00
Bananymous cba12efeb1 Kernel: Ignore optional_actions in SYS_TCSETATTR 
Currently all terminals are syncronous, so the actions don't do anything
 2024-08-22 14:47:54 +03:00
Bananymous 37cd4ed504 Kernel: Add support for CSI @, b, d to VirtualTerminal 2024-08-22 14:04:45 +03:00
Bananymous 869bba4dad Kernel: Add check for panic in timer interrupt handler 
Previously processors would not get notified about kernel panic if they
were idling
 2024-08-22 14:03:03 +03:00
Bananymous 23194d1f53 Kernel: Implement basic random device to /dev/random 2024-08-22 14:02:26 +03:00
Bananymous 969563c06a Kernel: Don't load AP init code to 0xF000, but relocate it later 
This cleans up the kernel executable as bootloaders don't have to
load AP init code straight to 0xF000, but it will be moved there once
kernel is doing the AP initialization.
 2024-08-21 13:37:50 +03:00
Bananymous 066e8e1cc2 Kernel: Remove unnecessary debug logging from VFS initialization 2024-08-18 20:51:10 +03:00
Bananymous 5cd7b40165 Kernel: Make BananBootloader info struct header compatible with C 2024-08-18 20:51:10 +03:00
Bananymous c7b134ba4b Kernel: Fix NVMe controller namespace numbering 
namespace numbers were incrementing globally instead of per controller.
This led to two single namespace controllers creating nvme0n1 and
nvme1n2
 2024-08-18 20:51:10 +03:00
Bananymous ff62c262fe Kernel: Fix PS/2 scancode set 2 keycodes for the bottom row keys 2024-08-18 20:51:10 +03:00
Bananymous 42e2c15e0c Kernel: Add ps2=<scancode set> command line argument 
This allows forcing specific scancode set on broken PS/2 emulations
 2024-08-18 20:51:10 +03:00
Bananymous 40c6989374 Kernel: Implement AML ObjectTypeOp 2024-08-18 20:51:10 +03:00
Bananymous 71dc373610 Kernel: "Fix" AML _OSI string to return true for windows strings 
This is the way its supposed to be done as other code paths are
untested...
 2024-08-18 20:51:10 +03:00
Bananymous 0fa16cf982 Kernel: Fix and add some AML to_underlying functions 2024-08-18 20:44:51 +03:00
Bananymous 8902032b42 BuildSystem: Cleanup kernel cmake file 2024-08-18 20:44:12 +03:00
Bananymous 368f5e9799 Kernel: Add command lineoption `nousb` that will disable usb controller 2024-08-16 22:09:24 +03:00
Bananymous b1fe24bb57 Kernel: Hack AML integers to work better 
Something is trying to store into a constant integers. Just by copying
not returning any integers as constants fixes it xD
 2024-08-16 13:04:52 +03:00
Bananymous 490a28ee7a Kernel/AML: General cleanup and compliance improvements 2024-08-15 23:14:13 +03:00
Bananymous 75884ca6b8 Kernel/AML: Allow calling method through named objects 2024-08-15 23:13:32 +03:00
Bananymous d729d7f570 Kernel: Implement AML storing to Buffer 2024-08-15 23:12:52 +03:00
Bananymous 6408bb2efa Kernel: Add AML API for getting underlying value of nodes 2024-08-15 23:11:59 +03:00
Bananymous d8dabab4fb Kernel: Implement AML CopyObjectOp 2024-08-15 20:55:55 +03:00
Bananymous 4dc107f77a Kernel: Fix AML Register/Reference accesses 2024-08-15 20:55:18 +03:00
Bananymous eaf06d239c Kernel: Cleanup and fix AML Method calls 2024-08-15 20:54:55 +03:00
Bananymous d9b3a4bf77 Kernel: Add more conversions for AML Integer, Register, String 2024-08-15 20:51:04 +03:00
Bananymous cf970d5914 Kernel: Add better conversion for AML Alias, Name and Reference 2024-08-15 20:48:35 +03:00
Bananymous 1cfe3dd4da Kernel: Implement AML BreakOp and ContinueOp 2024-08-15 19:08:00 +03:00
Bananymous 51d1e47bfe Kernel: Fix AML CreateFieldOp to take bit index instead of byte index 2024-08-15 19:05:58 +03:00
Bananymous e0a447bfaf Kernel: Add _GL to ACPI root namespace 2024-08-15 02:28:22 +03:00
Bananymous 3f5ee6f414 Kernel: Rewrite the AML conversion API 
This doesn't currently make the interpreter any better, but it will make
further implementation easier to be spec (or hardware...) compliant
 2024-08-15 02:25:45 +03:00
Bananymous 44d5c8c4b4 Kernel: Implement AML To{Buffer,Integer,String}Op 2024-08-14 20:28:32 +03:00
Bananymous 17b7e9e772 Kernel: Allow all named objects to fail cleanly if name exists 2024-08-14 20:28:00 +03:00
Bananymous 957df08932 Kernel: root command line option can be specified as an UUID 
Format is the same as in linux
root=UUID=XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX

This makes it easier to boot when computer has multiple disks installed
 2024-08-14 13:23:27 +03:00
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
Bananymous 30d12a76bc Kernel: Fix 32 bit compilation 2024-04-18 01:35:56 +03:00
Bananymous 687fa44eff Kernel: Add support for ACPI general purpose events 2024-04-17 21:51:03 +03:00
Bananymous aefb33efff Kernel: Implement dummy AML NotifyOp 2024-04-17 15:40:11 +03:00
Bananymous da0c45b7ee Kernel: Cleanup AML debug dump output 2024-04-17 15:35:42 +03:00
Bananymous 956335e844 Kernel: Implement AML WhileOp 2024-04-17 15:00:14 +03:00
Bananymous 701fc600cd Kernel: Implement evaluate and store for BankFieldElement 2024-04-17 14:59:51 +03:00
Bananymous e38b2cff4f Kernel: Implement proper synchronization for AML opregions 2024-04-17 14:59:26 +03:00
Bananymous b268293402 Kernel: Fix Buffer evaluate and store for sizes >= byte 
All reads and writes were to the first byte. This patch adds the
correct offset for reading and writing.
 2024-04-17 14:57:13 +03:00
Bananymous 45b9dc8be9 Kernel: Make ACPI \\_OSI return true for Linux 2024-04-17 02:19:35 +03:00
Bananymous 0ad7025a17 Kernel: Actually map FACS (and global lock) 2024-04-17 02:14:56 +03:00
Bananymous 49b7467840 Kernel: Simplify AML method invocation API 2024-04-17 01:20:58 +03:00
Bananymous a40ef610a2 Kernel: Allow demand paging only for userspace threads 2024-04-17 01:16:43 +03:00
Bananymous f9943b60e4 Kernel: Fix mutex try_lock return value 
WHY IS GCC NOT COMPLAINING FROM HEADERS... I used almost 2 hours
trying to locate why AML was broken
 2024-04-17 01:16:43 +03:00
Bananymous f97fb1b35d Kernel: Evaluate _REG on devices for embedded controller if needed 2024-04-17 01:16:43 +03:00
Bananymous b959181afd Kernel: Remove ACPI namespace from itself 
This removes unnecessary cyclic reference
 2024-04-17 00:52:05 +03:00
Bananymous cbc27a94ac Kernel: AML cleanup IfElse code 2024-04-17 00:49:07 +03:00
Bananymous 6a4f999b88 Kernel: Cleanup AML code and add evaluate for string 2024-04-16 17:39:16 +03:00
Bananymous 7707e01352 Kernel: AML add flag to force absolute lookup for ACPI namespace 2024-04-16 17:38:23 +03:00
Bananymous e667326df5 Kernel: Fix AML if parsing 
Parse else case unconditionally, even if _if_ case evaluates to true
 2024-04-16 17:36:04 +03:00
Bananymous f1b2d7530d Kernel: Rework AML namespace and object hierarchy 
Remove tree-like structure from AML. This allows more spec compliant
parsing of named objects inside not yet declared devices.

This also allows AML to be run thread safely. All object adds/removes
are now guarded by a mutex.
 2024-04-16 16:47:45 +03:00
Bananymous b6587b32b9 Kernel: ACPI ignore events from non-existent ports 2024-04-16 00:00:07 +03:00
Bananymous b89bafa165 Kernel: Add support for power button shutdown 
This patch implements basic support for power button using ACPI
fixed events. I still need to implement general purpose events
and embedded controller for full power button support.
 2024-04-15 23:55:25 +03:00
Bananymous 9fac5f94ba Kernel: Fix entering ACPI mode 
My condition to check wheter to enter ACPI mode was incorrect.
I only entered ACPI mode if I already was in ACPI mode :DD
 2024-04-15 15:05:48 +03:00
Bananymous 5affc73ee6 Kernel: Parse ACPI namespace only after TTY is initialized 
This allows better debugging when there is no serial port available.
 2024-04-12 16:47:17 +03:00
Bananymous 027016ddae Kernel: Load all SSDTs and PSDTs 
Spec says to load all tables with unique OEM table IDs but that seem
wrong.
 2024-04-12 16:45:00 +03:00
Bananymous 8f2f98b7b4 Kernel: AML implement SleepOp 2024-04-12 16:17:14 +03:00
Bananymous 6b43d12469 Kernel: AML package doesn't mark ZeroOp as NullName reference 2024-04-12 16:10:16 +03:00
Bananymous 74940ed33c Kernel: Cleanup AML code and fix bugs 
I can enter ACPI mode on my own laptop!
 2024-04-12 16:03:14 +03:00
Bananymous 17871bb3ca Kernel: Fix ACPI namespace initialization 
ACPI spec says that only SSDTS with unique OEM table IDs are to be
loaded.

Add loading of ACPI 1.0 PSDTs
 2024-04-12 12:41:30 +03:00
Bananymous 89c4abc07a Kernel: Cleanup AML device initialization 
_STA and _INI are now properly called on call devices
 2024-04-12 02:00:30 +03:00
Bananymous 46b5a7697c Kernel: Implement dummy \_OSI method for AML 
This always returns Zero (not supported)
 2024-04-12 01:49:54 +03:00
Bananymous dd8060d64f Kernel: Add FieldElement access attribute for AML interpreter 2024-04-12 01:49:15 +03:00
Bananymous afb1d7ef0c Kernel: Implement more features for AML parser/interpreter 
Added
   - BankField
   - BufferField
   - PowerResource
   - ThermalZone
   - Reference
   - Package element forward declare
 2024-04-12 01:47:40 +03:00
Bananymous 93ddee5956 Kernel: Implement locking for AML 
Now global lock uses the actual global lock. Currenly if no lock
can be acquired, we just panic the kernel so that I remember to
implement it properly once AML is running concurrently.
 2024-04-11 01:48:46 +03:00
Bananymous 0184e5beb5 Kernel: AML tries to initialize processors when entering ACPI mode 
I had forgotten that Processors used to be a different definition
in AML.

I also implemented reads/writes for FieldElement/IndexFieldElement
that fit in 64 bits. Reads and writes to buffer are still a TODO.
 2024-04-11 01:48:46 +03:00
Bananymous 3f2e110eab Kernel: Entering ACPI mode now actually enables ACPI 
I used to only initialize devices, but now I send ACPI_ENABLE if
machine is not hardware reduced.
 2024-04-11 00:17:03 +03:00
Bananymous 0ff68b7d66 Kernel: Make ACPI load all SSDT headers after DSDT is loaded 2024-04-10 15:03:54 +03:00
Bananymous cdbdc1a822 Kernel: Remove lai as a dependecy 
I don't think lai is needed anymore, since my own AML interpreter
can do ACPI poweroff which was all that lai was used for.
 2024-04-10 04:39:48 +03:00
Bananymous 7a2be05c69 Kernel: Implement poweroff with my AML interpreter 
This can succesfully poweroff qemu!
 2024-04-10 04:32:35 +03:00
Bananymous 5be38d0702 Kernel: My AML parser can now enable ACPI mode on QEMU! 2024-04-10 03:05:27 +03:00
Bananymous ff203d8d34 Kernel: Implement more AML method invocation stuff 
Method invocation is starting to come together. This implemenetation
can interpret some of the qemu's functions to enter ACPI mode.

PCI config space access is currently the one thing is between
entering ACPI mode.
 2024-04-10 01:52:14 +03:00
Bananymous 23fa39121c Kernel: Start working on AML method evaluations 
Also fix namespace lookup and scope creations.
 2024-04-09 18:37:51 +03:00
Bananymous b16e65168f Kernel: Rewrite whole AML parser 
Now AML parsing is actually done while respecting namespaces and
scopes. I implemented the minimal functionality to parse qemu's AML.

Next step is to implement AML interpreting and then we can drop lai
as a dependency.
 2024-04-09 01:16:07 +03:00
Bananymous 22bc4b4271 Kernel: Fix AML package parsing 2024-04-07 20:32:22 +03:00
Bananymous e01c049401 Kernel: Fix AML buffer parsing 2024-04-07 20:24:05 +03:00
Bananymous e7ef7a9e55 Kernel: Implement barebones AML parser 
This implements only parsing for AML in qemu. InvokeMethods are not
parsed since number of arguments to Methods is not yet known.

Parsing AML uses multiple kilobytes of stack space, so I increased
boot stack size by a lot :D

I am not sure where my own AML is going, but this is good start if
I decide to implement full ACPI on my own.

This code is very much just ugly macro expansion.

Qemu has 2 DefPackage elements that I am not able to parse. Package
data ends while there should be still multiple elements.
 2024-04-07 17:03:30 +03:00
Bananymous e0011d22f2 Kernel: Move ACPI to its own directory and namespace 2024-04-04 15:00:13 +03:00
Bananymous fa900df5a7 Kernel: Add signals for threads after IRQs 
This allows signals to be called even if the process does no syscalls
The old scheduler did signal handling but I feel like it should be
enough to handle them only after syscalls and IRQs. ISRs already
handle signals that caused the ISR and there is no other route to
kernel space.
 2024-04-03 15:07:18 +03:00
Bananymous 7ef751ba95 Kernel: Fix multiprocessor for i686 
i686 is now actually ran with multiple processors.
 2024-04-03 14:42:17 +03:00
Bananymous f8c01418b1 Kernel: Fix multiprocessing on x86_64 
I did not even start APs after initializing them... :D
 2024-04-03 14:21:55 +03:00
Bananymous d2df55b1ac Kernel: Allow booting with multiple processors on i686 
Also remove unnecessary ds clearing in x86_64.
 2024-04-03 02:30:38 +03:00
Bananymous 0dd74e3c9d Kernel: Implement syscalls for i686 and cleanup x86_64 
This actually allows i686 to boot properly!
 2024-04-03 02:23:23 +03:00
Bananymous 9e073e9fa0 Kernel: Add offset for interrupt stack in Scheduler::yield() 
This allows accessing (garbage) sp and ss in interrupt stack.
 2024-04-03 00:45:22 +03:00
Bananymous c95a271821 Kernel: Set ss in i686 tss 2024-04-03 00:43:38 +03:00
Bananymous fe386fa819 Kernel: Implement thread start trampoline for userspace 
This is needed on i686 to set segment registers.
 2024-04-03 00:42:39 +03:00
Bananymous 4d70322eab Kernel: Save segment registers on all interrupts on i686 2024-04-03 00:41:13 +03:00
Bananymous d9b8391968 Kernel: Fix i686 page table global mappings 2024-04-03 00:40:16 +03:00
Bananymous 2106a9e373 Kernel: Rework scheduler/processor stacks. 2024-04-02 12:34:42 +03:00
Bananymous 5050047cef Kernel: Rewrite whole scheduler 
Current context saving was very hacky and dependant on compiler
behaviour that was not consistent. Now we always use iret for
context saving. This makes everything more clean.
 2024-03-29 18:02:12 +02:00
Bananymous 1b65f850ee Kernel: Rename thread stacks to more appropriate names 2024-03-27 15:06:24 +02:00
Bananymous 7c2933aae1 Kernel: Fix ISR error code formatting to 32 bit 2024-03-26 21:01:18 +02:00
Bananymous 96babec22a Kernel: Implement Thread trampolines for x86_32 2024-03-26 21:01:18 +02:00
Bananymous c12d1e9bd9 Kernel: Implement PageTable for x86_32 
This is mostly copied from x86_64 with necessary modifications
 2024-03-26 20:16:20 +02:00
Bananymous 4d1f0e77f2 Kernel: Fix physical address size for x86_32 
Having 32 bit address space does not mean physical address space
is also only 32 bits...
 2024-03-26 20:16:20 +02:00
Bananymous d7bf34ecd0 Kernel: Write isr handler for x86_32 and cleanup x86_64 2024-03-26 20:16:20 +02:00
Bananymous 1943c3e7a1 Kernel: Unify IDT and GDT code between x86_64 and x86_32 
The code is pretty much the same, so there are just couple macros
differiating initialization.
 2024-03-26 16:42:02 +02:00
Bananymous af050cc729 Kernel: Fix boot code for x86_32 
Boot assembly now initializes processor and jumps to kernel
 2024-03-26 13:25:22 +02:00
Bananymous 99e30a4d7d Kernel: Replace i386 with i686 
I don't really want to be working with i386 since it doesn't support
compare exchange instruction
 2024-03-26 02:48:26 +02:00
Bananymous 93975fdc45 Kernel: Process signal mask is now 2 32 bit values 
This allows signal mask to be atomic on 32 bit target
 2024-03-26 02:46:51 +02:00
Bananymous fbef90f7cb Kernel/LibC: Write cxx abi with proper locking 2024-03-26 02:28:10 +02:00
Bananymous a9db4dd9a3 Kernel: NVMe Queue max simultaneous commands is dependent on arch 
This allows mask to be atomic on 32 bit architectures
 2024-03-26 01:45:43 +02:00
Bananymous fc7e96fa66 Kernel: Rewrite i386 boot code + linker script 2024-03-26 00:10:42 +02:00
Bananymous 097d9a6479 Kernel: Implement dummy IDT and GDT for i386 2024-03-26 00:10:42 +02:00
Bananymous 2dd0bfdece Kernel: Make i386 thread tramplines crash 2024-03-26 00:10:42 +02:00
Bananymous 26585bb1d9 Kernel: Implement signal trampoline for i386 2024-03-22 15:41:15 +02:00
Bananymous 0d92719433 Kernel: Remove old i386 spinlock code 2024-03-22 15:41:15 +02:00
Bananymous 1ab2722850 Kernel: Add PageTable stub to progress linking 2024-03-22 15:41:15 +02:00
Bananymous fe17958b9f Kernel: Rename rsp->sp and rip->ip 
This makes more sense if we support i386
 2024-03-22 15:41:15 +02:00
Bananymous 3e4d410646 Kernel: Fix AHCI device physical address writing on i386 target 2024-03-22 15:41:15 +02:00
Bananymous b5aae34d86 Kernel: Specify template paramenters where they cannot be deduced 2024-03-22 15:41:15 +02:00
Bananymous 7f029b2713 Kernel: Allow Processor compilation for i386 targets 
This is achieved by rewriting some inline assembly and changing
ProcessorID to be 32 bit value. For some reason if processor id
is 8 bits gcc runs out of 8 bit registers on i386.
 2024-03-22 15:41:15 +02:00
Bananymous 0424082e7b Kernel: Only compile lai for x86_64 targets 
I will be dropping lai entirely soon. Once I get to writing AML
interpreter.
 2024-03-22 15:41:15 +02:00
Bananymous 2352c86048 Kernel: i386 has 14 indirect blocks in TmpInode instead of 2 
This allows keeping size of TmpInodeInfo as 128
 2024-03-22 14:01:27 +02:00
Bananymous c0dff5e203 Kernel: Scheduler/Thread add inline assembly for i386 2024-03-22 14:01:27 +02:00
Bananymous d920785256 Kernel: RDRAND on i386 is called twice with 32 bit register 2024-03-22 14:01:27 +02:00
Bananymous 45cea14165 Kernel: Move sys_fork trampolines to kernel/arch/ directory 2024-03-22 12:48:54 +02:00
Bananymous 26ed689d30 Kernel: Remove old GDT, IDT and MMU code from i386 
It will be easier to just rewrite them
 2024-03-22 12:47:34 +02:00
Bananymous 7ce0370b6a Kernel: Define KERNEL_OFFSET for i386 target 2024-03-22 12:35:49 +02:00
Bananymous aa2e53c4f8 Kernel: E1000 fix physical address on 32 bit target 2024-03-22 12:35:38 +02:00
Bananymous 9ecd156622 Kenrel: Ext2 fix signed-unsigned comparisons 2024-03-22 12:35:29 +02:00
Bananymous 62f6128ba1 Kernel: Cleanup NVMe Queue command submission 
There is techically a race condition on thread sleep and checking
done mask. This patch allows read to success even if this race
condition is hit, although the full timeout has to be waited.

This can be fixed in future with some sort of wait queues that
can properly handle this race condition.
 2024-03-19 13:01:27 +02:00
Bananymous 9607b4205a Kernel: Fix kernel panic on signal 
Signals are now added/handled without Scheduler's lock
 2024-03-18 16:05:47 +02:00
Bananymous 090c3c9930 Kernel: NVMe queues now supports upto 64 simultaneous operations 2024-03-15 13:46:35 +02:00
Bananymous 48ea9e1c1d Kernel: PS2Controller uses RecursiveSpinLock so timeouts don't panic 2024-03-15 13:45:44 +02:00
Bananymous 42469b83fe Kernel: kernel panic is now sent to all processors 2024-03-15 13:45:01 +02:00
Bananymous e65bc040af Kernel: Now all active processors are used in scheduling 
When a timer reschedule happens, ipi is broadcasted too all
processors for them to perform a reschedule!
 2024-03-09 23:53:50 +02:00
Bananymous 89ca4c8a8b Kernel: Implement IPI broadcasting 2024-03-09 23:53:38 +02:00
Bananymous 2323a55517 Kernel: Debug lock is locked while dumping stack trace 2024-03-09 23:52:06 +02:00
Bananymous 45d6caa1d0 Kernel: APs now start their idle threads when scheduler is started 2024-03-09 23:51:40 +02:00
Bananymous 55d2a64f54 Kernel: Map interrupt handlers for all processors 
This doesn't mean that processors will actually handle the irqs
 2024-03-09 23:50:57 +02:00
Bananymous 2420886c2c Kernel: Move current and idle thread to Processor 2024-03-08 23:39:29 +02:00
Bananymous e636dce919 Kernel: Rewrite scheduler thread lists 
Scheduler now has its own data SchedulerQueue which holds active nad
blocking thread lists. This removes need for BAN/Errors.h and making
current thread separate element instead of iterator into linked list.
This makes it possible to have current_thread on each processor
instead of a global one in Scheduler.
 2024-03-08 22:13:45 +02:00
Bananymous 1a1f9b1cf2 Kernel: Fix {read,write}_gs_sized input operands to work always 2024-03-08 22:12:33 +02:00
Bananymous 23a2f8b903 Kernel: Cleanup multiprocessor startup by removing magic numbers 2024-03-07 17:01:17 +02:00
Bananymous 29fd682672 Kernel: Store current processor pointer in IA32_GS_BASE 
This allows easier access to processors fields
 2024-03-07 16:05:29 +02:00
Bananymous 6234a5bc0b Kernel: Move multiprocessor initialize after framebuffer is created 
This allows getting output before multiprocessor is started.
 2024-03-06 16:00:19 +02:00
Bananymous 54f64e7618 Kernel: Move current page table to Processor 
APs can now map kernel page table and print current time!
 2024-03-06 02:19:59 +02:00
Bananymous f0105cb7fb Kernel: Move Interruptable from InterruptController.h to its own file 2024-03-06 00:47:02 +02:00
Bananymous 76b0f80169 Kernel: Move IDT to Processor 2024-03-06 00:45:54 +02:00
Bananymous f84df175ce Kernel: Save BSB id 2024-03-06 00:36:09 +02:00
Bananymous 58aca68726 Kernel: Move GDT to Processor 2024-03-06 00:35:45 +02:00
Bananymous 8670364f44 BAN: Remove unnecessary include from Array.h 2024-03-06 00:01:06 +02:00
Bananymous 418bc54f2b Kernel: Move SpinLock definition to header and fix Scheduler locking 
This patch allows inlining of spinlocks :)
 2024-03-04 22:36:41 +02:00
Bananymous 9c36d7c338 BAN/Kernel: Rework assertion/panic system 
BAN/Assert.h does not need any includes meaning it can be included
anywhere without problems.
 2024-03-04 11:41:54 +02:00
Bananymous 8141b9977d Kernel: Per processor information is now stored in class Processor 
This allows us to allocate processor stacks, and other per processor
structures dynamically in runtime. Giving processor stack to
ap_trampoline feels super hacky, but it works for now.
 2024-03-03 22:30:06 +02:00
Bananymous c035d3c82c Kernel: Start all processors on kernel boot 
Processors don't do anything, except print hello message and halt.
 2024-03-03 02:19:43 +02:00
Bananymous 1de9daa40f Kernel: Move interrupt status stuff to Processor.h 
SpinLocks are now locked with processor id instead of thread id. This
allows having multiple processors running while scheduler is not yet
activated.
 2024-03-03 01:47:22 +02:00
Bananymous a667d88f93 Kernel: Remove now obsolete CriticalScope 
All critical scopes in kernel are now replaced by SpinLocks. This
allows proper locking in actual multiprocessing with multiple cores.
 2024-03-01 15:51:02 +02:00
Bananymous 8d7dd577ab Kernel: Replace last CriticalScopes in kernel with SpinLocks 2024-03-01 15:49:39 +02:00
Bananymous 054b41383f Kernel: Implement SpinLock unsafe that does not keep track of locker 
This will be used in scheduler where thread ids are changing
 2024-03-01 15:48:08 +02:00
Bananymous 02ad199138 Kernel: Move interrupt status functions to kernel/Interrupts.h 2024-03-01 02:13:28 +02:00
Bananymous 65c4f9db5b Kernel: Replace CriticalScopes with SpinLocks in Process/Thread 2024-03-01 02:13:28 +02:00