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959 Commits

Author SHA1 Message Date
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 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 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 55fbd09e45 Kernel: Rewrite physical memory allocation with PageTable::fast_pages 2024-10-14 11:32:54 +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 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 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 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 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 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 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 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 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 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 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 c65613901f Kernel: Fix AML aliases and package elements 2024-09-10 16:18:42 +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 991ae4383a Kernel/LibC: Implement fchmod 2024-08-25 15:07:42 +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 37cd4ed504 Kernel: Add support for CSI @, b, d to VirtualTerminal 2024-08-22 14:04:45 +03:00
Bananymous 23194d1f53 Kernel: Implement basic random device to /dev/random 2024-08-22 14:02:26 +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 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 0fa16cf982 Kernel: Fix and add some AML to_underlying functions 2024-08-18 20:44:51 +03:00
Bananymous 368f5e9799 Kernel: Add command lineoption `nousb` that will disable usb controller 2024-08-16 22:09:24 +03:00
Bananymous 490a28ee7a Kernel/AML: General cleanup and compliance improvements 2024-08-15 23:14:13 +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 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 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 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 a33b63d066 Kernel/LibC: Implement alarm() and setitimer() 
This makes vim able to start!
 2024-08-01 21:09:56 +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 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 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 8fe798de6d Kernel: Make PIT counter atomic with spinlock 2024-07-21 18:56:41 +03:00
Bananymous 77b5e6d44a Kernel: Make ATABus use BAN::Atomic<> instead of gcc builtin atomics 2024-07-21 17:39:26 +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 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 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 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 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 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 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 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 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 60a05412c9 Kernel: ACPI implement SizeOf 2024-06-25 23:24:51 +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 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 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 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 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 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 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 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 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 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 18e2559b1e Kernel/LibC: Add SYS_TRUNCATE 2024-05-28 01:08:04 +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 e7e1dd91c7 Kernel: Implement ACPI reset 2024-04-22 21:12:13 +03:00
Bananymous 693f90449f Kernel: Rework AML package and implement indexing in to packages 2024-04-19 11:26:48 +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 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 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 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 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 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 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 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 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 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 c95a271821 Kernel: Set ss in i686 tss 2024-04-03 00:43:38 +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 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 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