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8087 commits

Author SHA1 Message Date
Andreas Kling
a098266ff5 Kernel: Simplify Process factory functions
- Instead of taking the first new thread as an out-parameter, we now
  bundle the process and its first thread in a struct and use that
  as the return value.

- Make all Process factory functions return ErrorOr. Use this to convert
  some places to more TRY().

- Drop the "try_" prefix on Process factory functions.
2023-04-04 10:33:42 +02:00
Andreas Kling
65438d8a85 Kernel: Stop using *LockRefPtr for Process pointers
The only persistent one of these was Thread::m_process and that never
changes after initialization. Make it const to enforce this and switch
everything over to RefPtr & NonnullRefPtr.
2023-04-04 10:33:42 +02:00
Andreas Kling
19084ef743 Kernel: Simplify Mount internals
- The host custody never changes after initialization, so there's no
  need to protect it with a spinlock.

- To enforce the fact that some members don't change after
  initialization, make them const.
2023-04-04 10:33:42 +02:00
Andreas Kling
673592dea8 Kernel: Stop using *LockRefPtr for FileSystem pointers
There was only one permanent storage location for these: as a member
in the Mount class.

That member is never modified after Mount initialization, so we don't
need to worry about races there.
2023-04-04 10:33:42 +02:00
Caoimhe
3f69ef86c2 Kernel/aarch64: Implement Processor::time_spent_idle() 2023-04-04 10:30:09 +02:00
Timon Kruiper
bd2011406e Kernel: Merge x86_64 and aarch64 init.cpp files 2023-04-03 20:01:28 -06:00
Timon Kruiper
c31dc82b17 Kernel: Move deferred call code into separate DeferredCallPool class
This allows us to share this code between the x86_64 and aarch64 build.
2023-04-03 20:01:28 -06:00
Timon Kruiper
1f68ac600c Kernel/aarch64: Correctly implement Processor::leave_critical 2023-04-03 20:01:28 -06:00
Timon Kruiper
1fa1f09c38 Kernel/Graphics: Only search for PCI graphics cards on x86_64
This is for the upcoming commit that merges the x86_64 and aarch64
init.cpp files.
2023-04-03 20:01:28 -06:00
Timon Kruiper
14d20618f1 Kernel/aarch64: Move query_firmware_version into RPi::Mailbox
This is for the upcoming commit that merges the x86_64 and aarch64
init.cpp files.
2023-04-03 20:01:28 -06:00
Timon Kruiper
2613ac4cb4 Kernel/aarch64: Move logo drawing and initializing into RPi::Framebuffer
This is for a upcoming commit that merges the x86_64 and aarch64
init.cpp files.
2023-04-03 20:01:28 -06:00
Timon Kruiper
aa40cef2b7 Kernel: Disable interrupts for aarch64 in WorkQueue's main loop
This code expects to be executed with interrupts disabled, however we
currently spawn (kernel) threads with interrupts enabled on aarch64.
2023-04-03 20:01:28 -06:00
Timon Kruiper
05b9eb7feb Kernel/aarch64: Rename Processor::install to Processor::early_initialize
Also pass the cpu number to Processor::initialize. This way the init
code can be shared between the x86_64 and aarch64 build.
2023-04-03 20:01:28 -06:00
Idan Horowitz
402c9e5e23 Kernel: Implement Processor::assume_context for AArch64
With this implemented sys$execve should be fully working on AArch64.
2023-04-03 02:59:37 -06:00
Idan Horowitz
0dc5c49938 Kernel: Call exit_trap in AArch64 restore_context_and_eret
This matches x86_64's behaviour in common_trap_exit. (called from
thread_context_first_enter)
Currently thread_context_first_enter is only called when creating new
processes from scratch, in which case this doesn't change the actual
behaviour. But once thread_context_first_enter is called as part of
execve support, this will ensure the Thread's m_current_trap is set
correctly to the new trap frame.
2023-04-03 02:59:37 -06:00
Idan Horowitz
a349570a04 Kernel: Abstract Processor::assume_context flags using InterruptsState
The details of the specific interrupt bits that must be turned on are
irrelevant to the sys$execve implementation. Abstract it away to the
Processor implementations using the InterruptsState enum.
2023-04-03 02:59:37 -06:00
Idan Horowitz
6ad8f4bb11 Kernel: Stop overwriting AArch64 link register in forked processes
Forked processes already have an existing value for the link register,
which we can't overwrite. But since they're forked the original link
register value that points to exit_kernel_thread was already saved
somewhere on the stack, so it's ok not to set it.
2023-04-03 02:59:37 -06:00
Idan Horowitz
8669f4ce45 Kernel: Add AArch64 support to sys$fork 2023-04-03 02:59:37 -06:00
Marco Cutecchia
425acb513e Kernel: Allow booting from an SD card 2023-04-02 12:43:17 -06:00
Marco Cutecchia
5fe6c6fc24 Kernel: Add support for SD host controllers on the PCI bus 2023-04-02 12:43:17 -06:00
Marco Cutecchia
47cae8005f Kernel: Add support for version 2 SD host controllers 2023-04-02 12:43:17 -06:00
Marco Cutecchia
1b04c43690 Kernel: Initialize DiskCache's buffer before the dirty&clean lists
This commit fixes a kernel panic that happened when unmounting
a disk due to an invalid memory access.
This was because `DiskCache` initializes two linked lists that use
an argument `KBuffer` as the storage for their elements.
Since the member `KBuffer` was declared after the two lists,
when `DiskCache`'s destructor was called, then `KBuffer`'s destructor
was called before the ones of the two lists, causing a page fault in
the kernel.
2023-04-02 12:43:17 -06:00
Liav A
07b83cf3fa Kernel/HID: Don't update the remapped Ctrl modifier unconditionally
Instead, only update it when the Caps Lock key event is generated and
remapping to the Ctrl key is enabled.

This fixes a bug that when enabling remapping Caps Lock key to the Ctrl
key, the original Ctrl key is no longer usable.
2023-03-31 12:45:12 -04:00
Jelle Raaijmakers
dd8fa73da1 Kernel: Add support for Intel HDA
This is an implementation that tries to follow the spec as closely as
possible, and works with Qemu's Intel HDA and some bare metal HDA
controllers out there. Compiling with `INTEL_HDA_DEBUG=on` will provide
a lot of detailed information that could help us getting this to work
on more bare metal controllers as well :^)

Output format is limited to `i16` samples for now.
2023-03-25 21:27:03 +01:00
Jelle Raaijmakers
c530f74e2f Kernel: Mention right parent class for AC'97's device_name 2023-03-25 21:27:03 +01:00
Marco Cutecchia
36c5afdfb2 Revert "Revert "Kernel/Storage: Remove the ramdisk implementation""
This reverts commit 187723776a.

This was reverted because it was needed until the aarch64 port
got an SD card driver

Co-authored-by: Ollrogge <nils-ollrogge@outlook.de>
2023-03-25 16:50:36 +00:00
Marco Cutecchia
d09852642c Revert "Kernel/aarch64: Embed disk image into kernel binary"
This reverts commit 3b65fd64fc.

This is no longer needed as we don't use the ramdisk anymore

Co-authored-by: Ollrogge <nils-ollrogge@outlook.de>
2023-03-25 16:50:36 +00:00
Marco Cutecchia
c91db6ec97 Kernel: Add an SD card driver for the aarch64 port
Co-authored-by: Ollrogge <nils-ollrogge@outlook.de>
2023-03-25 16:50:36 +00:00
Marco Cutecchia
bb8092d6a1 Kernel: Allow enabling high level detection on GPIOs
Co-authored-by: Timon Kruiper <timonkruiper@gmail.com>
Co-authored-by: Ollrogge <nils-ollrogge@outlook.de>
2023-03-25 16:50:36 +00:00
Marco Cutecchia
28acf25035 Kernel: Use u64 instead of int for the bitfields of CPACR_EL1
This fixes the Clang build of the aarch64 port
2023-03-25 16:50:36 +00:00
Marco Cutecchia
d0403d24d4 Kernel: Add missing include to Jail.h 2023-03-25 16:50:36 +00:00
Liav A
59a76b1279 Kernel: Remove 2 duplicated listings of cpp files in CMakeLists.txt file 2023-03-25 08:46:54 +00:00
Pankaj Raghav
d0ac24ddbf Kernel/Syscalls: Use copy_n_to_user when applicable
copy_to_user() with bytes as the last argument could be changed to using
copy_n_to_user() with a count.
2023-03-24 18:25:12 +01:00
Pankaj Raghav
f32fde6152 Kernel/StdLib: Change try_copy_n_to_user to copy_n_to_user
Let us keep the naming consistent between copy_n_from_user() and
copy_n_to_user()
2023-03-24 18:25:12 +01:00
Liav A
fdab8a24f5 Kernel/Graphics: Use longer timeout settings in VirtIO GPU commands
It appeared that we sometimes failed to invoke synchronous commands on
the GPU. To temporarily fix this, wait 10 milliseconds for commands to
complete before failing.
2023-03-19 00:19:06 +00:00
Liav A
3337a5722a Kernel: Simplify VirtIOGPU attach_physical_range_to_framebuffer method
According to the specification, modesetting can be invoked with no need
for flushing the framebuffer nor with DMA to transfer the framebuffer
rendering.
2023-03-19 00:19:06 +00:00
Liav A
657bc71247 Kernel/VirtIO: Ignore the VIRTIO_PCI_CAP_PCI_CFG configuration type
This configuration exposes a suboptimal mechanism to access other
VirtIO device configurations. It is also the only configuration to use a
zero length for a configuration structure, and specify a valid BAR which
triggered a kernel panic when attaching a virtio-gpu-pci device before
95b15e4901 was applied.

The real solution for that problem is to ignore this configuration type
because we never actually use it. It means that we can VERIFY that all
other configuration types have a valid length, as being expected.
2023-03-19 00:19:06 +00:00
Julian Offenhäuser
f31a9e9374 Kernel: Refactor AHCIController to propagate more errors
Before, the mapping of our HBA region would be done in the constructor.
Since this can fail, I moved it into initialize().

Additionally, we now use the TypedMapping helper for mapping the HBA
instead of doing it manually. This actually uncovered a bug where we
would ignore any possible offset into the page we were mapping, which
caused us to miss the mapped registers entirely.
2023-03-16 09:55:15 +01:00
Julian Offenhäuser
5541dfd9f8 Kernel: Allow AHCIController::initialize() to fail
If we fail to initialize an AHCI controller, we now skip adding it to
the list of storage controllers in StorageManagement.
2023-03-16 09:55:15 +01:00
Julian Offenhäuser
d1e88a5141 Kernel: Propagate errors in StorageController reset() and shutdown()
These used to signal an error with a boolean return type. We now return
a sensible errno instead.
2023-03-16 09:55:15 +01:00
Liav A
d16d805d96 Kernel: Merge {get,set}_process_name syscalls to the prctl syscall
It makes much more sense to have these actions being performed via the
prctl syscall, as they both require 2 plain arguments to be passed to
the syscall layer, and in contrast to most syscalls, we don't get in
these removed syscalls an automatic representation of Userspace<T>, but
two FlatPtr(s) to perform casting on them in the prctl syscall which is
suited to what has been done in the removed syscalls.

Also, it makes sense to have these actions in the prctl syscall, because
they are strongly related to the process control concept of the prctl
syscall.
2023-03-15 20:10:48 +01:00
Pankaj Raghav
6ff85aa19a Kernel/Ramdisk: Propagate error during Ramdisk initialize
Use the same pattern for Ramdisk similar to other storage devices during
device initialization. This will propagate errors if the Ramdisk fails
to initialize.
2023-03-15 11:25:59 +01:00
Pankaj Raghav
b204da94b0 Kernel/Storage: Use NonnullRefPtr for storage controllers
Storage controllers are initialized during init and are never modified.
NonnullRefPtr can be safely used instead of the NonnullLockRefPtr. This
also fixes one of the UB issue that was there when using an NVMe device
because of NonnullLockRefPtr.

We can add proper locking when we need to modify the storage controllers
after init.
2023-03-15 11:25:59 +01:00
Tim Schumacher
ecd1862859 AK: Rename Stream::write_entire_buffer to Stream::write_until_depleted
No functional changes.
2023-03-13 15:16:20 +00:00
Andrew Kaster
6ce7257ad7 Kernel: Don't include Kernel/Arch/RegisterState from userspace
Any userspace cpp file that included <syscall.h> would end up with
a large glob of Kernel headers included, all the way down to
Kernel/Arch/x86_64/CPU.h and friends.

Only the kernel needs RegisterState, so hide it from userspace.
2023-03-13 07:23:53 +00:00
Liav A
633006926f Kernel: Make the Jails' internal design a lot more sane
This is done with 2 major steps:
1. Remove JailManagement singleton and use a structure that resembles
    what we have with the Process object. This is required later for the
    second step in this commit, but on its own, is a major change that
    removes this clunky singleton that had no real usage by itself.
2. Use IntrusiveLists to keep references to Process objects in the same
    Jail so it will be much more straightforward to iterate on this kind
    of objects when needed. Previously we locked the entire Process list
    and we did a simple pointer comparison to check if the checked
    Process we iterate on is in the same Jail or not, which required
    taking multiple Spinlocks in a very clumsy and heavyweight way.
2023-03-12 10:21:59 -06:00
Pankaj Raghav
f8b67e1596 Kernel/Storage+Base: Fix boot_device_addressing document for NVMe
The LUN.target_id parameter points to a NVMe Namespace which starts from
1 and not 0. Fix the document to reflect the same while addressing a
nvme device in the boot parameters
2023-03-11 13:15:00 +00:00
Fabian Dellwing
7c0b360881 Kernel: Add non standard value to sys$sysconf
Add `_SC_PHYS_PAGES` to sys$sysconf syscall. This value is needed
for a port I'm working on.
2023-03-11 13:06:36 +00:00
Julian Offenhäuser
c705afa43a Kernel: Fix variable shadowing issue in PCIIDELegacyModeController
In this specific else case, primary_base_io_window would not be assigned
in the outer scope, leading to a crash immediately after.
2023-03-11 06:06:01 -07:00
Andreas Kling
03cc45e5a2 Kernel: Use RefPtr instead of LockRefPtr for File and subclasses
This was mostly straightforward, as all the storage locations are
guarded by some related mutex.

The use of old-school associated mutexes instead of MutexProtected
is unfortunate, but the process to modernize such code is ongoing.
2023-03-10 13:15:44 +01:00