Rework the interrupt code and add support for interrupt filtering

(INTR_FILTER). This includes:
o  Save a pointer to the sapic structure and IRQ for every vector,
   so that we can quickly EOI, mask and unmask the interrupt.
o  Add locking to the sapic code now that we can reprogram a
   sapic on multiple CPUs at the same time.
o  Use u_int for the vector and IRQ. We only have 256 vectors, so
   using a 64-bit type for it is rather excessive.
o  Properly handle concurrent registration of a handler for the
   same vector.

Since vectors have a corresponding priority, we should not map
IRQs to vectors in a linear fashion, but rather pick a vector
that has a priority in line with the interrupt type. This is left
for later. The vector/IRQ interchange has been untangled as much
as possible to make this easier.

Approved by: re (blacket)

1 files changed, 1 insertions, 1 deletions

diff --git a/sys/ia64/include/md_var.h b/sys/ia64/include/md_var.h
index 864e6c9..e54ac9e 100644
--- a/sys/ia64/include/md_var.h
+++ b/sys/ia64/include/md_var.h
@@ -84,7 +84,7 @@ int	ia64_highfp_drop(struct thread *);
 int	ia64_highfp_save(struct thread *);
 void	ia64_init(void);
 void	ia64_probe_sapics(void);
-int	interrupt(uint64_t, struct trapframe *);
+int	interrupt(u_int, struct trapframe *);
 void	map_gateway_page(void);
 void	map_pal_code(void);
 void	map_vhpt(uintptr_t);