3998c5f955
Kernel: ATA now uses irqs instead of polling
...
Reading is now much slower at ~500 kB/s it was around 3 MB/s.
This is probably mostly due semaphore blocking taking atleast
until next reschedule (1 ms itervals). This will be a problem
as long as we are using only single processor.
I could try to use {READ/WRITE}_MULTIPLE commands, but since
most of the disk reads are 2 sectors (inode block size) this
will at most double the speed.
Most efficient speed up would of course be caching disk access
data and inodes overall.
2023-04-03 00:03:38 +03:00
762d22ed28
Kernel: Move ATADevice to its own file from ATAController
...
The API is kinda weird since device reads/writes go from
ATADevice -> ATAController -> ATADevice
but this is for now atleast necessary since ATAController has(?)
to keep all devices from using the disks at the same time
2023-04-02 18:26:19 +03:00
f2362b2b78
Kernel: ATA controller waits now before read/write until disk is ready
...
Qemu used to freeze on disk writes but now it seems fine
2023-04-02 05:37:17 +03:00
471ac80420
BuildSystem: building for 32-bit works now
2023-04-02 05:03:17 +03:00
e49d3c7bfe
BuildSystem: We are now using cmake instead of plain make
...
I have been annoyed for a while since I had to build everything
when running the os since the buildsystem was really bad.
I wanted to rewrite the whole build system and changed to using cmake
:)
2023-04-02 04:07:27 +03:00
79090c2648
Kernel: cleanup includes
...
I went quickly went through all files since I found some weird
includes :D
2023-04-01 02:14:49 +03:00
7a6b1c8e47
Kernel: Fix traversing back from mount points
2023-04-01 01:54:35 +03:00
8988ce2766
Kernel: Add inodes '.' and '..' to device manager
2023-04-01 01:33:04 +03:00
dcde2ae6b4
Kernel: Reads return 0 bytes read at the end of device
...
We used to not have any idea if we where already at the end of device.
Also fixed couple of copy-paste errors from read->write
2023-04-01 00:55:07 +03:00
c62849a783
Kernel: Shell cleanup cat command
2023-04-01 00:54:39 +03:00
f453e8e170
Kernel: Shell 'time' prints the time even if command fails
2023-04-01 00:30:33 +03:00
990887891e
Kernel: Process gets absolute paths for mount
2023-04-01 00:30:11 +03:00
5da801d12b
Kernel: fix ext2 failed creation memory leak
2023-04-01 00:22:03 +03:00
3a4557d417
Kernel: Cleanup ATA device initialization
2023-03-31 00:58:57 +03:00
26d9a3e253
Kernel: Move DeviceManager to its own file
2023-03-30 22:39:45 +03:00
eef3631a5a
Kernel: Improve locking in Process, VFS and ATAController
...
We used to block on all process access. This meant that shell
reading the keyboard input would block all VFS access making disk
accesses practically impossible. We now block only when it is
necessary :)
2023-03-30 22:02:16 +03:00
88ee35165f
Kernel: Thread is no longer RefCounted
...
This makes developement with Scheduler much easier against compiler
optimizations. I could now remove the pragma GCC optimize stuff.
2023-03-30 19:16:51 +03:00
c8f05b4a7a
Kernel: Add Semaphore to block threads
2023-03-30 18:46:33 +03:00
2995a36942
Kernel: root partition is now passed from the commandline
2023-03-30 18:46:19 +03:00
3e8ab8271d
Kernel: Shell can now mount partitions
2023-03-30 15:06:41 +03:00
5b3a00c64f
Kernel: Inode::Mode is now a struct so we can have functions in it
2023-03-30 14:41:15 +03:00
0ce9fd8597
Kernel: StorageDevices and Controllers are now devices
2023-03-30 14:22:15 +03:00
c9badb5a1c
Kernel: Add IFBLK, IFLNK, IFSOCK to Inode::Mode
2023-03-30 13:15:46 +03:00
a513bc5749
Kernel: All devices have atime, mtime, ctime at their creation
2023-03-30 13:15:46 +03:00
5d5487315f
Kernel: Remove the mount test from VFS
2023-03-30 11:43:24 +03:00
3508df67b1
Kernel: fix stat command and device numbers
2023-03-30 10:43:08 +03:00
06ce1f0667
Kernel: Rewrite mounting code
2023-03-29 21:34:48 +03:00
1fb8c211f0
Kernel: Move Partition out of StorageDevice and rename functions
2023-03-29 13:23:01 +03:00
9c7670847e
Kernel: Shell commands 'ls' and 'stat' recognize character devices
2023-03-29 11:56:33 +03:00
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
7f90079ea7
Kernel: Fix keymap numlock behaviour
2023-03-29 03:18:22 +03:00
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
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
f9a0412e78
Kernel: ACPI unmap_header does not do anything
...
We have to work with MMU mapping/unmapping to be user friendly
2023-03-28 02:56:44 +03:00
2f8c9746e3
Kernel: Move ACPI to its own file
2023-03-27 17:30:45 +03:00
f8a2c60c8d
Kernel/BAN: move unix time conversion to BAN and add stat to Shell
2023-03-27 00:49:58 +03:00
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
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
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
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
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
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
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
15037bfc7a
Kernel: Move get_unix_time to RTC namespace
2023-03-23 18:14:51 +02:00
3572e9794a
BAN: Modify Span constructors to keep constness correctly
2023-03-23 14:26:03 +02:00
6ed9651176
Kernel: StorageDevice and Ext2 "support" writing
2023-03-23 13:04:13 +02:00
3efbe22a1b
Kernel: Shell now prints unix time with 'date' command
2023-03-23 11:13:51 +02:00
96579b88cf
Kernel: Cleanup GPT parsing code
2023-03-23 11:13:14 +02:00
2ec18855f2
Kernel: TTY buffer is resized on font size change
...
Shell also has better line wrapping. You still can't visually go
back to previous line, but atleas we now write from the beginning
of the line
2023-03-22 02:09:22 +02:00
b222581d18
Kernel: Reading from fd verifies that file is opened for reading
2023-03-22 01:55:58 +02:00
a8e3ee6f19
Kernel: Ext2 directory functions now fail on invalid blocks
...
Invalid blocks should only happen while writing to a file and
I think in that case we should just bail out instead of giving
you incomlete inode list or search result.
2023-03-22 01:55:57 +02:00
a083e588ba
Kernel: cksum uses now a different crc32_table to match linux 'cksum'
2023-03-22 01:55:21 +02:00
9b500842a0
Kernel: Ext2 can now read from non-block-size aligned offsets
2023-03-21 19:19:17 +02:00
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
633055293e
Kernel: Remove for_each_block from Ext2
2023-03-21 18:14:02 +02:00
ae9d618803
Kernel: Cleanup font parsing
...
We use now the LittleEndian<> wrapper for PSF2 header and no more
magic constants in code
2023-03-20 19:48:08 +02:00
faf1b661bb
Kernel: prefs font does not allocate extra buffer
2023-03-20 19:48:01 +02:00
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
43f4657566
Kernel: Font parsing uses Spans now
2023-03-20 13:35:54 +02:00
39b560fde3
Kernel: Add basic mounting to VFS.
2023-03-19 05:51:25 +02:00
76d5364a55
Kernel: Add comparison operator for inodes
2023-03-19 03:34:23 +02:00
b41491e205
Kernel: Add cksum to Shell for file read testing
...
I also removed the 'using namespace BAN'
2023-03-18 03:50:24 +02:00
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
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
1f2ceeb329
Kernel: VFS caches currently open inodes
2023-03-16 15:31:33 +02:00
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
c012822d49
BAN: Rename StringView suffix from _sv to sv
2023-03-16 12:15:16 +02:00
8b8e3cbbf0
Kernel/Userspace: Start initial work on userspace and syscalls
2023-03-13 15:32:46 +02:00
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
8dbece9119
Kernel: kmalloc minimum align is forced to s_kmalloc_min_align
2023-03-09 14:37:25 +02:00
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
fc58baf54d
Kernel: if VFS initialization does not find root, we fail
2023-03-09 02:17:42 +02:00
2e6e0d0ef5
Kernel: FIX ubsan complaining about unaligned addresses for STDHeaders
2023-03-08 22:55:44 +02:00
371dfe8ef3
BAN: Formatter now uses perfect forwarding on its arguments
2023-03-08 21:31:26 +02:00
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
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
a068d828fe
Kernel: ATA reads go through the ata controller and not only device
2023-03-08 03:26:25 +02:00
1dabe7a222
Kernel: More rework on Scheduler
2023-03-08 03:26:25 +02:00
e7a577f54a
Kernel: fix includes
2023-03-08 03:26:25 +02:00
23b3028e15
Kernel: Rename RefCounted -> RefPtr and implement RefCounted
2023-03-08 03:26:25 +02:00
f7ebda3bf1
Kernel: Move interrupt related functions to InterruptController
2023-03-08 03:16:51 +02:00
b5673278c4
Kernel: Disable color after Debug::dump_stack_trace
2023-03-08 02:41:44 +02:00
0b62729887
Kernel: Scheduler sleeping is working
...
We have to disable optimization for one function, but I'm working
on a fix
2023-03-08 02:41:44 +02:00
b8ee77eb78
Kernel: Initial work on new scheduler with queues
...
Sleeping is definately broken
2023-03-08 02:41:44 +02:00
a9acf1f6dc
Kernel: PCIDevice is now class with getters and constructor
2023-03-08 02:41:44 +02:00
42c33ebfb3
Kernel: kmalloc aligns size to s_kmalloc_min_align
...
We don't get unaligned memory anymore from kmalloc
2023-03-08 02:41:44 +02:00
ed18d86f08
Kernel: Fix spinlock unlocking in x86_64
...
Spinlock unlock used a 64 bit write on 32 bit integer, overwriting
some random memory. This caused some really hard to find bugs
2023-03-08 02:41:44 +02:00
df8811fc1a
Kernel: Remove "a" from .section .text
2023-03-07 01:57:09 +02:00
8a52c0f9d7
Kernel: Cleanup RSDP parsing code
2023-03-07 00:41:13 +02:00
06db890d49
Kernel: Add ubsan
...
My brain has been melting since I'm getting very random bugs.
I hope I can debug them better with ubsan :)
2023-03-06 23:38:05 +02:00
d5f302a68b
Kernel: kmalloc now uses two locks
...
One for fixed allocations and one for general allocations
2023-03-06 12:40:35 +02:00
f1f5e76636
Kernel: kmalloc requires alignment to be power of two
2023-03-02 22:31:13 +02:00
52aa98ba25
Kernel+LibC: Add some errno codes
...
Kernel now returns ENOMEM and other errnos, so we dont have to write
error messages
2023-03-02 21:10:44 +02:00
90a7268e5a
BAN: Rewrite RefCounted to return ErrorOr
2023-03-02 12:30:11 +02:00
1dd61e93b6
Kernel: Threads cannot take arguments anymore
2023-03-02 01:56:09 +02:00
4d8bdec16d
Kernel: fix i386 MMU
2023-03-02 00:47:29 +02:00
7fcbb869e1
Kernel: Initialize GDT in kernel code
...
We dont use the boot GDT only while booting
2023-03-01 21:21:56 +02:00
7f8cad83b1
Kernel: x86_64 boot script now makes GDT with null, kernel code and data
2023-03-01 21:21:56 +02:00
ba8c4dbc7f
Kernel: panic now disables interrupts as the first thing
2023-03-01 21:21:56 +02:00
9756de02ef
Kernel: MMU now takes flags when allocating pages
2023-03-01 21:21:56 +02:00
Bananymous