Change the x86 interrupt code to suspend/resume interrupt controllers

(PICs) rather than interrupt sources.  This allows interrupt controllers
with no interrupt pics (such as the 8259As when APIC is in use) to
participate in suspend/resume.
- Always register the 8259A PICs even if we don't use any of their pins.
- Explicitly reset the 8259As on resume on amd64 if 'device atpic' isn't
  included.
- Add a "dummy" PIC for the local APIC on the BSP to reset the local APIC
  on resume.  This gets suspend/resume working with APIC on UP systems.
  SMP still needs more work to bring the APs back to life.

The MFC after is tentative.

Tested by:	anholt (i386)
Submitted by:	Andrea Bittau <a.bittau at cs.ucl.ac.uk> (3)
MFC after:	1 week

1 files changed, 1 insertions, 1 deletions

diff --git a/sys/amd64/include/apicvar.h b/sys/amd64/include/apicvar.h
index 98cf3a3..ebd8f04 100644
--- a/sys/amd64/include/apicvar.h
+++ b/sys/amd64/include/apicvar.h
@@ -211,7 +211,7 @@ int	lapic_set_lvt_polarity(u_int apic_id, u_int lvt,
 int	lapic_set_lvt_triggermode(u_int apic_id, u_int lvt,
 	    enum intr_trigger trigger);
 void	lapic_set_tpr(u_int vector);
-void	lapic_setup(void);
+void	lapic_setup(int boot);
 int	lapic_setup_clock(void);
 
 #endif /* !LOCORE */