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324 Commits

Author SHA1 Message Date
Bananymous b00dd8d68d Kernel: Fix ansi control sequence cursor movement 2023-04-05 03:07:52 +03:00
Bananymous abbbf7ec15 Kernel: Add tty to process and make termios modifiable 2023-04-05 02:53:28 +03:00
Bananymous d0b1457f30 Kernel: TTY now supports clearing 2023-04-05 02:04:18 +03:00
Bananymous a423cd8bb3 Kernel: Add partial support for shell 
We don't handle arrow keys, and the tty does not know how to clear
the screeen :D
 2023-04-05 01:30:58 +03:00
Bananymous db076058b9 Kernel: Process can now initialize stdio 
This allows the use of the fds STD{IN,OUT,ERR}_FILENO
 2023-04-05 01:10:25 +03:00
Bananymous a1100624bf Kernel: Start work on making tty a file 
TTY is now a file that you can read from/write to. I still have
to port shell to use this new interface
 2023-04-05 00:56:09 +03:00
Bananymous 28e1497f88 Kernel: add virtual write function to inode 2023-04-03 20:29:07 +03:00
Bananymous 8d6111641e Kernel: Fix keys in PS2Keymap 2023-04-03 20:25:23 +03:00
Bananymous 3ee20d1a84 Kernel: Fix typo 2023-04-03 19:56:55 +03:00
Bananymous 002c2d0aca BuildSystem: remove non-existent file from kernel CMakeLists.txt 2023-04-03 19:02:25 +03:00
Bananymous 461a5774f8 Kernel: Device dev and rdev number is done more properly 
Also hd* partitions are now 1 indexed instead of 0
 2023-04-03 11:43:16 +03:00
Bananymous ebfd092075 Kernel: Cleaner partition parsing errors 2023-04-03 09:55:49 +03:00
Bananymous e322826347 Kernel: Optimize scheduler idling 
Now after each interrupt we will ask the scheduler to reschedule
if the current thread is the idle thread. This allows semaphore
unblocking to be practically instant when there is only one thread
executing.

Now disk reading is back to ~3 MB/s for single threaded process
 2023-04-03 01:51:05 +03:00
Bananymous 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
Bananymous 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
Bananymous 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
Bananymous 471ac80420 BuildSystem: building for 32-bit works now 2023-04-02 05:03:17 +03:00
Bananymous 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
Bananymous 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
Bananymous 7a6b1c8e47 Kernel: Fix traversing back from mount points 2023-04-01 01:54:35 +03:00
Bananymous 8988ce2766 Kernel: Add inodes '.' and '..' to device manager 2023-04-01 01:33:04 +03:00
Bananymous 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
Bananymous c62849a783 Kernel: Shell cleanup cat command 2023-04-01 00:54:39 +03:00
Bananymous f453e8e170 Kernel: Shell 'time' prints the time even if command fails 2023-04-01 00:30:33 +03:00
Bananymous 990887891e Kernel: Process gets absolute paths for mount 2023-04-01 00:30:11 +03:00
Bananymous 5da801d12b Kernel: fix ext2 failed creation memory leak 2023-04-01 00:22:03 +03:00
Bananymous 3a4557d417 Kernel: Cleanup ATA device initialization 2023-03-31 00:58:57 +03:00
Bananymous 26d9a3e253 Kernel: Move DeviceManager to its own file 2023-03-30 22:39:45 +03:00
Bananymous 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
Bananymous 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
Bananymous c8f05b4a7a Kernel: Add Semaphore to block threads 2023-03-30 18:46:33 +03:00
Bananymous 2995a36942 Kernel: root partition is now passed from the commandline 2023-03-30 18:46:19 +03:00
Bananymous 3e8ab8271d Kernel: Shell can now mount partitions 2023-03-30 15:06:41 +03:00
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 9c7670847e Kernel: Shell commands 'ls' and 'stat' recognize character devices 2023-03-29 11:56:33 +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 7f90079ea7 Kernel: Fix keymap numlock behaviour 2023-03-29 03:18:22 +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 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
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