x86: Implement multicast ICIs

Added x2APIC support.

* Mostly useful for virtualization at the moment. Works in QEmu.
* Can be enabled by safemode settings/menu.
* Please note that x2APIC normally requires use of VT-d interrupt remapping feature
on real hardware, which we don't support yet.

* When initializing MSI support, don't assume a single 24 entry IO-APIC. Instead
mark the ISA interrupts as unusable and then use ioapic_is_interrupt_available
to determine if that vector is possibly taken by an IO-APIC. If IO-APICs are
not used, this will simply always return false, leaving all vectors free for
MSI use.
* The msi_init() now has to be done after a potential IO-APIC init, so it is now
done after ioapic_init() instead of inside apic_init().
* Add apic_disable_local_ints() to clear the local ints on the local APIC once
we are in APIC mode (i.e. the IO-APIC is set up and we don't need the external
routing anymore).


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@41445 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Fix build, the APIC definitions are used in the bootloader too.
* Automatic whitespace cleanup.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@36189 a95241bf-73f2-0310-859d-f6bbb57e9c96

Forgot to remove these in the previous commit.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@36183 a95241bf-73f2-0310-859d-f6bbb57e9c96

Seperate the generic (local) APIC stuff into it's own file and use it from the
other places where previously the same functionality was duplicated. Also
seperated the header which was originally arch_smp.h into apic.h and arch_smp.h
again as some of it is MP and not actually APIC.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@36182 a95241bf-73f2-0310-859d-f6bbb57e9c96

x86: Implement multicast ICIs

Added x2APIC support.

* Mostly useful for virtualization at the moment. Works in QEmu.
* Can be enabled by safemode settings/menu.
* Please note that x2APIC normally requires use of VT-d interrupt remapping feature
on real hardware, which we don't support yet.

* When initializing MSI support, don't assume a single 24 entry IO-APIC. Instead
mark the ISA interrupts as unusable and then use ioapic_is_interrupt_available
to determine if that vector is possibly taken by an IO-APIC. If IO-APICs are
not used, this will simply always return false, leaving all vectors free for
MSI use.
* The msi_init() now has to be done after a potential IO-APIC init, so it is now
done after ioapic_init() instead of inside apic_init().
* Add apic_disable_local_ints() to clear the local ints on the local APIC once
we are in APIC mode (i.e. the IO-APIC is set up and we don't need the external
routing anymore).


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@41445 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Fix build, the APIC definitions are used in the bootloader too.
* Automatic whitespace cleanup.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@36189 a95241bf-73f2-0310-859d-f6bbb57e9c96

Forgot to remove these in the previous commit.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@36183 a95241bf-73f2-0310-859d-f6bbb57e9c96

Seperate the generic (local) APIC stuff into it's own file and use it from the
other places where previously the same functionality was duplicated. Also
seperated the header which was originally arch_smp.h into apic.h and arch_smp.h
again as some of it is MP and not actually APIC.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@36182 a95241bf-73f2-0310-859d-f6bbb57e9c96