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* Introduce {reserve|allocate|free}_io_interrupt_vectors() that can generically

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be used to mark certain io interrupt vectors as reserved and to allocate from
  the still free ones. It is a kernel private API for now though.
* Make the MSI code use that functionality instead of implementing its own which
  slims it down considerably and also removes quite a bit of hardcoded knowledge
  about the interrupt layout that didn't really belong there.
* Mark the various in-use interrupts as reserved from the components that
  actually know about them (PIC, IO-APIC, SMP, APIC timer and interrupt setup).


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@42832 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Michael Lotz
2011-10-12 20:55:28 +00:00
parent 6b0b621be9
commit fc2d7cb04d
8 changed files with 141 additions and 73 deletions
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headers/private/kernel/int.h
+4
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@@ -53,4 +53,8 @@ are_interrupts_enabled(void)
#define restore_interrupts(status) arch_int_restore_interrupts(status)
status_t reserve_io_interrupt_vectors(long count, long startVector);
status_t allocate_io_interrupt_vectors(long count, long *startVector);
void free_io_interrupt_vectors(long count, long startVector);
#endif /* _KERNEL_INT_H */