Insert a layer of indirection to the pmap code, using a kobj for

the interface. This allows run-time selection of MMU code, based
on CPU-type detection, or tunable-overrides when testing new code.

Pre-requisite for G5 support.

conf/files.powerpc
  - remove pmap.c
  - add mmu_if.h, mmu_oea.c, pmap_dispatch.c

powerpc/include/mmuvar.h
  - definitions for MMU implementations

powerpc/include/pmap.h
  - remove pmap_pte_spill declaration
  - add pmap_mmu_install declaration
  - size the phys_avail array
  - pmap_bootstrapped is now global-scope

powerpc/powerpc/machdep.c
  - call kobj_machdep_init early in the boot sequence to allow
    kobj usage prior to SI_SUB_LOCK
  - install the OEA pmap code. This will be moved to CPU-specific
    init code in the future.

powerpc/powerpc/mmu_if.m
  - Kobj MMU interface definitions

powerpc/powerpc/pmap_dispatch.c
  - central dispatch for pmap calls
  - contains the global mmu kobj and the routine to locate the
   the mmu implementation and init the kobj

1 files changed, 6 insertions, 4 deletions

diff --git a/sys/powerpc/include/pmap.h b/sys/powerpc/include/pmap.h
index e28042c..57c6f61 100644
--- a/sys/powerpc/include/pmap.h
+++ b/sys/powerpc/include/pmap.h
@@ -94,19 +94,21 @@ void		*pmap_mapdev(vm_offset_t, vm_size_t);
 void		pmap_unmapdev(vm_offset_t, vm_size_t);
 void		pmap_deactivate(struct thread *);
 vm_offset_t	pmap_kextract(vm_offset_t);
-
-int		pmap_pte_spill(vm_offset_t);
-
 int		pmap_dev_direct_mapped(vm_offset_t, vm_size_t);
 
+boolean_t	pmap_mmu_install(char *name, int prio);
+
 #define	vtophys(va)	pmap_kextract(((vm_offset_t)(va)))
 
-extern	vm_offset_t phys_avail[];
+#define PHYS_AVAIL_SZ	128
+extern	vm_offset_t phys_avail[PHYS_AVAIL_SZ];
 extern	vm_offset_t virtual_avail;
 extern	vm_offset_t virtual_end;
 
 extern	vm_offset_t msgbuf_phys;
 
+extern	int pmap_bootstrapped;
+
 #endif
 
 #endif /* !_MACHINE_PMAP_H_ */