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214 Commits

Author SHA1 Message Date
Bananymous 5b3a00c64f Kernel: Inode::Mode is now a struct so we can have functions in it 2023-03-30 14:41:15 +03:00
Bananymous 0ce9fd8597 Kernel: StorageDevices and Controllers are now devices 2023-03-30 14:22:15 +03:00
Bananymous c9badb5a1c Kernel: Add IFBLK, IFLNK, IFSOCK to Inode::Mode 2023-03-30 13:15:46 +03:00
Bananymous a513bc5749 Kernel: All devices have atime, mtime, ctime at their creation 2023-03-30 13:15:46 +03:00
Bananymous 5d5487315f Kernel: Remove the mount test from VFS 2023-03-30 11:43:24 +03:00
Bananymous 3508df67b1 Kernel: fix stat command and device numbers 2023-03-30 10:43:08 +03:00
Bananymous 06ce1f0667 Kernel: Rewrite mounting code 2023-03-29 21:34:48 +03:00
Bananymous 1fb8c211f0 Kernel: Move Partition out of StorageDevice and rename functions 2023-03-29 13:23:01 +03:00
Bananymous a24c2d9be2 Kernel: DeviceManager is now a 'FileSystem' so it can expose devices 
Shell reads keyboard through /dev/input :)
 2023-03-29 11:50:46 +03:00
Bananymous f4b4987d43 Kernel: Remove obsolete KeyboardLayout/ 
This was used by the old input system. Currently keyboard layout is
hardcoded to finnish. But it will be reworked as something read from
the filesystem
 2023-03-29 03:09:14 +03:00
Bananymous ac094a48d6 Kernel: Rework the whole input system 
We now use Device abstraction that will allow us to provide devices
to userspace through /dev. Currently Shell reads from first and only
device (it being PS/2 Keyboard).
 2023-03-29 03:05:16 +03:00
Bananymous 2f8c9746e3 Kernel: Move ACPI to its own file 2023-03-27 17:30:45 +03:00
Bananymous f8a2c60c8d Kernel/BAN: move unix time conversion to BAN and add stat to Shell 2023-03-27 00:49:58 +03:00
Bananymous 770f7716a0 Kernel: Rework processes and VFS so we don't expose inodes 
Everything is now done through a file descriptor.
 2023-03-26 04:30:57 +03:00
Bananymous d67de70126 Kernel: Process::working_directory() is now thread safe 
I realized you cannot return a stirng view and it to be thread safe
 2023-03-24 01:46:25 +02:00
Bananymous 6f334756c5 Kernel: Create RecursiveSpinLock and add it to Process 
We now lock every function within Proccess, just to be sure.
Recursive lock allows us to use lock from the same thread even if
we already have the spinlock locked
 2023-03-24 01:32:35 +02:00
Bananymous 310713d203 Kernel: Lock process functions instead of the ata controller 
Process has to use locks at least on some functions so multithreaded
disk io is safe. This seemed to fix corrupted reads from disk
 2023-03-24 01:17:39 +02:00
Bananymous 7d2ab53baa Kernel: Ext2FS now does allocations better 
We only have to allocate at the beginning of the all functions and
can properly exit before any disk reads if we run out of memory.

This makes development little bit 'harder' since the {read,write}_block
user must allocate a buffer of atleast block_size bytes.

I also made disk access to cause kernel panic on error since the error
handling during file write is something I don't want to think now.
The filesystem can easily corrupt so, I feel like when disk io starts
to fail I'll come back to this.
 2023-03-23 23:22:31 +02:00
Bananymous 2152b8b95f Kernel: Add possibiliity to create empty files on Ext2 
Big rewrite for Ext2 for more easy and optimized code
 2023-03-23 22:26:06 +02:00
Bananymous 4fd21bc303 Kernel: Remove block group descriptor cache from ext2fs 
This will make improving the fs easier since we need to only update
the values on the disk
 2023-03-23 18:52:58 +02:00
Bananymous 15037bfc7a Kernel: Move get_unix_time to RTC namespace 2023-03-23 18:14:51 +02:00
Bananymous 3572e9794a BAN: Modify Span constructors to keep constness correctly 2023-03-23 14:26:03 +02:00
Bananymous 6ed9651176 Kernel: StorageDevice and Ext2 "support" writing 2023-03-23 13:04:13 +02:00
Bananymous 96579b88cf Kernel: Cleanup GPT parsing code 2023-03-23 11:13:14 +02:00
Bananymous b21348379f Kernel: Remove obsolete Ext2FS::ext2_root_inode() 
This was not used by anyone and the cast was wrong anyway
 2023-03-21 18:19:48 +02:00
Bananymous 633055293e Kernel: Remove for_each_block from Ext2 2023-03-21 18:14:02 +02:00
Bananymous 22e45278a2 Kernel: Fix PC Screen font parsing 
I had misread the format and the parsing code was incorrect. I also
changed fonts to store unicode codepoints as 32 bit integers, so
every character can be represented
 2023-03-20 14:52:42 +02:00
Bananymous 43f4657566 Kernel: Font parsing uses Spans now 2023-03-20 13:35:54 +02:00
Bananymous 39b560fde3 Kernel: Add basic mounting to VFS. 2023-03-19 05:51:25 +02:00
Bananymous 76d5364a55 Kernel: Add comparison operator for inodes 2023-03-19 03:34:23 +02:00
Bananymous 8236598f9d Kernel: Optimize Ext2 disk reads 
We used to read whole file until we reached the asked offset.
Now we can calculate the appropriate block and read just the asked data.
 2023-03-18 03:47:59 +02:00
Bananymous 1a26a318a4 Kernel: Rework filesystem reading 
We now read from a filesystem to user provided buffer.

Read sizes are determined by read call.

You should now get file descriptors and do reading through Process::current()
 2023-03-17 21:18:41 +02:00
Bananymous 1f2ceeb329 Kernel: VFS caches currently open inodes 2023-03-16 15:31:33 +02:00
Bananymous 1b7625581d Kernel: Add basic concept of Processes 
We now create Shell as a process that has its own threads
 2023-03-16 12:17:04 +02:00
Bananymous 8b8e3cbbf0 Kernel/Userspace: Start initial work on userspace and syscalls 2023-03-13 15:32:46 +02:00
Bananymous af854ec9e1 Kernel: Thread creation now takes void(*)() as entry and void* as data 
This simplifies threading for the future and gets rid of (undefined?)
cast of member function pointer to address
 2023-03-09 15:33:42 +02:00
Bananymous 8940ff8002 Kernel: You don't have to check whether VFS is initialized or not 
VFS now returns Error when attempting to traverse inodes if it did
not find root partition
 2023-03-09 02:31:24 +02:00
Bananymous 371dfe8ef3 BAN: Formatter now uses perfect forwarding on its arguments 2023-03-08 21:31:26 +02:00
Bananymous 7458f68c38 BAN: Error can now be constructed from c_string or format string 
If the resulting string would overflow, we just truncate it to fit
the error message buffer (128) bytes
 2023-03-08 17:05:37 +02:00
Bananymous d90aba0963 Kernel: Create CriticalScope and fix kmalloc 
This disables interrupts for the current scope and restores them
after the scope. This is used in kmalloc, since scheduler might
call into kmalloc/kfree, but deadlock if some thread is currently
trying to allocate. This allows us to use kmalloc in Scheduler.
 2023-03-08 13:55:53 +02:00
Bananymous a068d828fe Kernel: ATA reads go through the ata controller and not only device 2023-03-08 03:26:25 +02:00
Bananymous 1dabe7a222 Kernel: More rework on Scheduler 2023-03-08 03:26:25 +02:00
Bananymous e7a577f54a Kernel: fix includes 2023-03-08 03:26:25 +02:00
Bananymous 23b3028e15 Kernel: Rename RefCounted -> RefPtr and implement RefCounted 2023-03-08 03:26:25 +02:00
Bananymous f7ebda3bf1 Kernel: Move interrupt related functions to InterruptController 2023-03-08 03:16:51 +02:00
Bananymous b8ee77eb78 Kernel: Initial work on new scheduler with queues 
Sleeping is definately broken
 2023-03-08 02:41:44 +02:00
Bananymous a9acf1f6dc Kernel: PCIDevice is now class with getters and constructor 2023-03-08 02:41:44 +02:00
Bananymous 1dd61e93b6 Kernel: Threads cannot take arguments anymore 2023-03-02 01:56:09 +02:00
Bananymous 7fcbb869e1 Kernel: Initialize GDT in kernel code 
We dont use the boot GDT only while booting
 2023-03-01 21:21:56 +02:00
Bananymous ba8c4dbc7f Kernel: panic now disables interrupts as the first thing 2023-03-01 21:21:56 +02:00
Bananymous 9756de02ef Kernel: MMU now takes flags when allocating pages 2023-03-01 21:21:56 +02:00
Bananymous 7d84f290a1 Kernel: Add lock to Disk reads before I forget 2023-02-26 03:48:11 +02:00
Bananymous ee5d02aa70 Kernel: Rewrite basically all current disk io stuff 
This is a big commit that was kinda hard to split to smaller ones.

Essentially we now look at all the mass storage devices from PCI
and initialize (P)ATA devices. This doesn't provide any more functionality
but better abstractions and everything doesn't have to be on its old
default port that might be different for modern computers.
 2023-02-26 03:00:29 +02:00
Bananymous 04bb08d27f Kernel: Add basic PCI enumeration 2023-02-26 02:56:53 +02:00
Bananymous 34f9912a1d Kernel: Add IO functions inl, outl, and ins{b,w,l} to read into buffer 2023-02-24 12:39:38 +02:00
Bananymous 390a747768 Kernel: Add prefs font for terminal output before file system 2023-02-23 01:22:50 +02:00
Bananymous a4980acc88 Kernel: Fonts can now be parsed from the filesystem and set to terminal 
We currently dont have a fallback font if we cannot get to filesystem
initialization, but that will come later. I can't test on real hardware
for this reason.
 2023-02-22 22:29:31 +02:00
Bananymous 0e668738dc Kernel: Make some basic bitmap font parsing code 2023-02-22 22:28:12 +02:00
Bananymous d9c05b7378 Kernel: rewrite the whole kmalloc (again) 
Performance of the old kmalloc implementation was terrible.
We now use fixed-width linked list allocations for sizes <= 60 bytes.
This is much faster than variable size allocation.

We don't use bitmap scanning anymore since it was probably the slow
part. Instead we use headers that tell allocations size and aligment.

I removed the kmalloc_eternal, even though it was very fast, there is
not really any need for it, since the only place it was used in was IDT.

These changes allowed my psf (font) parsing to go from ~500 ms to ~20 ms.
(coming soon :D)
 2023-02-22 16:32:50 +02:00
Bananymous 5d31e89574 Kernel: Update ErrorOr API and add path find to VFS 
These two are done on the same commit since Changes to Shell were
annoying to make work with only one change
 2023-02-22 01:23:11 +02:00
Bananymous 038379274e Kernel: Inode can now return full mode value 
Kernel::Inode::Mode is an union of bitmasked fields for every
possible bit
 2023-02-20 21:39:24 +02:00
Bananymous efaca469ee Kernel: Ext2Inode now supports indirect blocks through for_each_block() 2023-02-20 10:25:15 +02:00
Bananymous 80006ea137 Kernel: Initial work on filesystem 
We support now ext2 directory listing. File reading is not yet supported.
 2023-02-20 01:46:00 +02:00
Bananymous 247f03c79e BAN: Make ErrorOr<> have attribute [[nodiscard]] 
We don't have to specify it everytime we make function return ErrorOr
 2023-02-19 20:10:30 +02:00
Bananymous feaeee11e5 Kernel: fix ARCH() macro and add helper macros for push/pop 2023-02-19 18:52:25 +02:00
Bananymous 1bd8b0fe5c Kernel: Sleep now actually sleeps and allows idling 2023-02-19 18:52:25 +02:00
Bananymous 8f1b6da2af Kernel: Use Vector instead of raw poiters in Disk stuff 
We now don't have to manually free allocated data
 2023-02-16 20:48:41 +02:00
Bananymous 460fc3a29f Kernel: Start working on filesystem 
We have a basic PATA driver (for reading) and gpt parser.
 2023-02-16 20:00:31 +02:00
Bananymous 94cbacc998 Kernel: PIT now has very barebones sleep 2023-02-16 17:53:25 +02:00
Bananymous 6a133782ed All: Move to c++20 2023-02-09 23:05:26 +02:00
Bananymous fb7fe73d49 Kernel: Add inw and outw to IO 2023-02-04 23:37:34 +02:00
Bananymous 5b5e620d8a Kernel: Improve multithreading support 
We can now use arbitary BAN::function<void(...)> as the Thread.
I also implemented multithreading for i386 since it was not done
on the initial multithreading commit.
 2023-02-02 23:24:12 +02:00
Bananymous 777ede328e Kernel: Add helper functions for reading current rsp and rbp 2023-02-02 23:19:44 +02:00
Bananymous 117d1de038 Kernel: panic does not need to include <kernel/kprint.h> 
This allows us to not have kprint available literally everywhere
 2023-02-02 15:51:15 +02:00
Bananymous f6b05212e0 Kernel: Add is_locked() to spinlock 
I think this is atomic read
 2023-02-02 15:49:30 +02:00
Bananymous 9b8de5025a All: rename every function from UpperCamelCase to snake_case 
This was a mess since I didn't know which to use but now I decided
to go with snake_case :)
 2023-02-01 21:05:44 +02:00
Bananymous 6a9d60a8fb Kernel: Implement somewhat functioning multithread support 
This still uses only a single cpu, but we can now have 'parallelization'

This seems to work fine in qemu and bochs, but my own computer did not
like this when I last tried.

I have absolutely no idea how multithreading should actually be
implmemented and I just thought and implemented the most simple one I
could think of. This might not be in any way correct :D
 2023-02-01 01:53:35 +02:00
Bananymous 7d8aafa0b5 Kernel: Add macros for current archutecture 2023-02-01 01:52:52 +02:00
Bananymous 337569b0ca Kernel: Implement basic SpinLock 2023-02-01 01:52:52 +02:00
Bananymous 1687028ed5 Kernel: Add constructor and destructor to MMU 2023-01-30 18:54:04 +02:00
Bananymous 6dc22b7251 Kernel: Add actual register values to x86_64 kernel panic 
Very hackish implementation, but we now get actual registers at the
time of the interrupt happening
 2023-01-30 18:52:38 +02:00
Bananymous aa0757e135 Kernel: Move dump_stacktrace from panic -> debug 2023-01-26 02:57:14 +02:00
Bananymous e87026f01d Kernel: I have no idea what this commit does 
I had committed a change in IDT but reverted it now.

This propably only adds a spurious interrupt detection to common cpp
interrupt handler?
 2023-01-26 02:55:37 +02:00
Bananymous c0bc002ac6 Kernel: Move debug printing to its own file 
It didn't make sense that dprint was defined in Serial.h.
We also now dump dprint to tty if there is no serial and tty is initialized
 2023-01-25 22:51:42 +02:00
Bananymous ba53582f23 Kernel: Rewrite APIC and PIC more OOP friendly 
x86_64 port is slowly coming together
 2023-01-23 20:13:57 +02:00
Bananymous b50bb03ed4 Kernel: Panic now halts machine even if we get spurious irqs 2023-01-23 18:25:48 +02:00
Bananymous 1b9f7aa815 Kernel: Rewrite the whole VESA driver 
We dont support vga text mode currently. I might add it later if needed.

I also removed mouse 'support' from Shell since it didn't do anything
and I didn't implement arbitary bitmap rendering to framebuffer
 2023-01-23 13:21:53 +02:00
Bananymous cdd27ae3db Kernel: rename MMU::m_page_directory_pointer_table -> m_highest_paging_stuct 
This might not always be pdpt. In x86_64 it is pml4/pml5
 2023-01-22 03:03:58 +02:00
Bananymous 491610db2c Kernel: move GDT initialization to boot.S 2023-01-22 00:48:12 +02:00
Bananymous bb051604a1 Kernel: Move dump_stacktrace() to arch folder 
It uses mov instruction which has different register on x86/x86-64
 2023-01-21 22:16:31 +02:00
Bananymous b9a4530e54 Kernel: Kernel::Panic now dumps stacktrace to com1 2023-01-16 21:50:50 +02:00
Bananymous 7540fa0385 Kernel: Shell now 'properly' parses commandline 2023-01-16 20:09:22 +02:00
Bananymous e307db47eb Kernel: Kernel::Panic() will now always print to serial output 2023-01-16 15:44:27 +02:00
Bananymous 46e5b3f3d6 Kernel: Move GDT to its own namespace and cleanup 2023-01-16 15:24:10 +02:00
Bananymous 8881c1e117 Kernel: Shell is no longer singleton 2023-01-16 15:16:39 +02:00
Bananymous 1545850be3 Kernel: Input callbacks use the new BAN::Function 2023-01-16 15:15:02 +02:00
Bananymous d5e162b1ea Kernel: fix kmalloc header 2023-01-16 12:10:50 +02:00
Bananymous f547a788f2 Kernel: Add support for arrow keys in Shell 2023-01-13 15:07:24 +02:00
Bananymous 416a41745f Kernel: Kernel::Panic now checks that TTY is initialized instead of VESA 2023-01-13 15:04:06 +02:00
Bananymous 7f01eaa936 Kernel: Move CPUID feature strings to cpp file 2023-01-13 00:03:37 +02:00