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Rev Age Author Path Log message Diff
4274 5734 d 8 h decky /trunk/kernel/generic/src/ fix compilation in non-SMP configurations  
4254 5741 d 7 h jermar /trunk/kernel/generic/src/ Address issues with IRQ notifications.  
4248 5741 d 14 h decky /trunk/kernel/generic/src/ipc/ avoid deadlock during cleanup
(the compare function which is called inside hash_table_remove acquires irq->lock)
 
3964 5782 d 16 h decky /trunk/kernel/ switch between the preference of kernel/uspace IRQ hash table  
3947 5785 d 12 h jermar /trunk/ This is the evil commit. In particular, it does:

- introduces more powerful pseudo code for userspace IRQ top-half handlers
- changes the internals of IRQ dispatching
- simplifies the kernel's i8042 driver
- adapts the uspace i8042 driver to make use of the new pseudocode
- breaks all other architectures except ia32
- breaks almost all existing drivers
- breaks switching between uspace and kernel drivers
 
3930 5787 d 7 h jermar /trunk/kernel/ Adapt most of the kernel to ioport8_t, ioport16_t and ioport32_t types.  
3902 5791 d 14 h jermar /trunk/kernel/ Introduce a more platform-neutral name for programmed I/O.

The new API looks like pio_read_n() or pio_write_n(), where n is 8, 16 or 32.
The old API (i.e. inb(), inw(), inl(), outb() outw(), outl()) may have made
some people think that the interface is only to be used with the separate I/O
space. That's not the case. This API is to be implemented on all platforms
so that we can finally have really generic kernel device drivers.
 
3875 5794 d 9 h decky /trunk/kernel/generic/ remove platform dependent constructs from generic code  
3657 5868 d 17 h vana /trunk/ Legacy IRQ support, uspace NS16550 support, some minor changes  
2745 6145 d 17 h decky /trunk/ code cleanup (mostly signed/unsigned)
allow extra compiler warnings
 
2626 6239 d 19 h jermar /trunk/kernel/generic/ Support for 5 payload arguments for IPC irq notifications and the pseudo code.  
2471 6400 d 10 h jermar /trunk/ Greatly improve comments in the IPC layer.
Now I think I finally start to understand our IPC internals :-)
 
2183 6473 d 13 h jermar /trunk/kernel/generic/ Continue to de-oversynchronize the kernel.
- replace as->refcount with an atomic counter; accesses to this
reference counter are not to be done when the as->lock mutex is held;
this gets us rid of mutex_lock_active();

Remove the possibility of a deadlock between TLB shootdown and asidlock.
- get rid of mutex_lock_active() on as->lock
- when locking the asidlock spinlock, always do it conditionally and with
preemption disabled; in the unsuccessful case, enable interrupts and try again
- there should be no deadlock between TLB shootdown and the as->lock mutexes
- PLEASE REVIEW !!!

Add DEADLOCK_PROBE's to places where we have spinlock_trylock() loops.
 
2098 6539 d 11 h decky /trunk/kernel/generic/ avoid conflict with potential keyword  
2071 6551 d 9 h jermar /trunk/ (c) versus (C)  
2064 6565 d 8 h vana /trunk/ SIMICS added as a simulator kernel runs on  
1933 6643 d 8 h jermar /trunk/kernel/generic/ Implement efficient IPC notification cleanup.  
1932 6643 d 9 h jermar /trunk/kernel/ Do not copy notification config out of the IRQ structure.
Add the notify member, that toggles notifications on and off instead.
This is good for preventing other tasks from registering the notification
while the notification config is stored outside the IRQ structure.
It should also help to implement the cleanup code.
 
1923 6644 d 8 h jermar /trunk/ Replace the old IRQ dispatcher and IPC notifier with new implementation.
Note that all architectures except for sparc64 are now broken
and don't even compile.
 
1875 6683 d 9 h jermar /trunk/ sparc64 work.
- Changes to enable userspace keyboard drivers.
- Fix z8530 initialization (i.e. clear any pending Tx interrupts).
- Experimental support for framebuffers with inverted colors.
 
1787 6741 d 11 h decky / move kernel/trunk, uspace/trunk and boot/trunk to trunk/kernel, trunk/uspace and trunk/boot  
1780 6748 d 12 h jermar /kernel/trunk/ Replace old __u?? types with respective C99 variants (e.g. uint32_t, int64_t, uintptr_t etc.).  
1757 6762 d 17 h jermar /kernel/trunk/ Cleanup of comments.  
1702 6769 d 15 h cejka /kernel/trunk/ Kernel doxygen comments updated.  
1698 6770 d 9 h jermar /kernel/trunk/generic/src/ipc/ Improve comments.
Replace 'process' with 'task'.
 
1693 6771 d 12 h palkovsky /kernel/trunk/generic/ Modified ipc/irq to be able to pass up to 3 arguments to userspace.  
1628 6776 d 6 h decky /kernel/trunk/ fixes  
1625 6776 d 6 h decky /kernel/trunk/ ppc32 uspace keyboard support  
1595 6776 d 22 h palkovsky /kernel/trunk/ Added kernel circular buffer klog.
Added automatic killing of tasks raising inappropriate exceptions.
TODO: Fix vsnprintf return value(and behaviour according to specs) and remove workaround in klog.
 
1591 6777 d 7 h palkovsky /kernel/trunk/generic/ Small updates to ipc.  
1573 6778 d 12 h palkovsky /kernel/trunk/generic/ Renamed some things in IPC to be consistent.
Added ipc reporting to kconsole.
 
1507 6780 d 15 h vana /kernel/trunk/ IA64 uspace keyboard kernel part  
1288 6808 d 17 h jermar /kernel/trunk/ Complete implementation of copy_from_uspace() and copy_to_uspace()
for amd64 and ia32. Other architectures still compile and run,
but need to implement their own assembly-only memcpy(), memcpy_from_uspace(),
memcpy_to_uspace() and their failover parts. For these architectures
only dummy implementations are provided.
 
1284 6810 d 21 h palkovsky /kernel/trunk/generic/ Added commands for accessing ia32 portspace in irq top-half.  
1281 6811 d 7 h palkovsky /kernel/trunk/ Added means to make a simple action upon interrupt.