Stop overloading unused bits in the pte. Use the low 12bits of the vaddr

instead to store them.  Add a macro to fetch the vaddr without them.
Make all variables/routines prefixed with pmap_
Cleanup & fix some of the vsid bitmap usage.
Cleanup DEBUG printfs.  Add some more checks to pmap_pvo_to_pte.

sys/arch/powerpc/include/mpc6xx/pte.h

@@ -1,4 +1,4 @@
-/*	$NetBSD: pte.h,v 1.1 2001/06/06 17:36:03 matt Exp $	*/
+/*	$NetBSD: pte.h,v 1.2 2001/06/15 18:26:06 matt Exp $	*/
 
 /*-
  * Copyright (C) 1995, 1996 Wolfgang Solfrank.
@@ -64,11 +64,6 @@ struct pte {
 #define	PTE_RO		0x00000003
 #define	PTE_RW		0x00000002
 
-#define	PTE_RSVD	0x00000e04
-#define	PTE_WIRED	0x00000004
-#define	PTE_GIDX_MASK	0x00000e00
-#define	PTE_GIDX_SHFT	9
-
 #ifndef	_LOCORE
 typedef	struct pte pte_t;
 #endif	/* _LOCORE */