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668 Commits

Author SHA1 Message Date
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