From a3d90b21625c1c3814871997a4e8f46a1e1b77c7 Mon Sep 17 00:00:00 2001
From: Miod Vallat <miod@cvs.openbsd.org>
Date: Fri, 18 Jan 2002 02:10:01 +0000
Subject: Replace resource maps with extents. This one was tricky but the light
 came at 3am.

---
 sys/arch/vax/vax/machdep.c | 35 +++++++++++++++++++++++------------
 1 file changed, 23 insertions(+), 12 deletions(-)

(limited to 'sys/arch/vax')

diff --git a/sys/arch/vax/vax/machdep.c b/sys/arch/vax/vax/machdep.c
index ecc8254ae37..516b15cab8c 100644
--- a/sys/arch/vax/vax/machdep.c
+++ b/sys/arch/vax/vax/machdep.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: machdep.c,v 1.49 2001/12/18 11:17:26 hugh Exp $ */
+/* $OpenBSD: machdep.c,v 1.50 2002/01/18 02:10:00 miod Exp $ */
 /* $NetBSD: machdep.c,v 1.108 2000/09/13 15:00:23 thorpej Exp $	 */
 
 /*
@@ -49,7 +49,8 @@
 #include <sys/signal.h>
 #include <sys/param.h>
 #include <sys/systm.h>
-#include <sys/map.h>
+#include <sys/extent.h>
+#include <sys/malloc.h>
 #include <sys/proc.h>
 #include <sys/signalvar.h>
 #include <sys/user.h>
@@ -151,8 +152,15 @@ int		physmem;
 int		dumpsize = 0;
 int		cold = 1; /* coldstart */
 
+/*
+ * XXX some storage space must be allocated statically because of
+ * early console init
+ */
 #define	IOMAPSZ	100
-static	struct map iomap[IOMAPSZ];
+char extiospace[EXTENT_FIXED_STORAGE_SIZE(IOMAPSZ)];
+
+struct extent *extio;
+extern vaddr_t iospace;
 
 struct vm_map *exec_map = NULL;
 struct vm_map *mb_map = NULL;
@@ -345,8 +353,13 @@ consinit()
 	/*
 	 * Init I/O memory resource map. Must be done before cninit()
 	 * is called; we may want to use iospace in the console routines.
+	 *
+	 * XXX console code uses the first page at iospace, so do not make
+	 * the extent start at iospace.
 	 */
-	rminit(iomap, IOSPSZ, (long)1, "iomap", IOMAPSZ);
+	extio = extent_create("extio",
+	    (u_long)iospace + VAX_NBPG, (u_long)iospace + IOSPSZ * VAX_NBPG,
+	    M_DEVBUF, extiospace, sizeof(extiospace), EX_NOWAIT);
 #ifdef DEBUG
 	iospace_inited = 1;
 #endif
@@ -709,9 +722,8 @@ vax_map_physmem(phys, size)
 	paddr_t phys;
 	int size;
 {
-	extern vaddr_t iospace;
 	vaddr_t addr;
-	int pageno;
+	int error;
 	static int warned = 0;
 
 #ifdef DEBUG
@@ -723,13 +735,13 @@ vax_map_physmem(phys, size)
 		if (addr == 0)
 			panic("vax_map_physmem: kernel map full");
 	} else {
-		pageno = rmalloc(iomap, size);
-		if (pageno == 0) {
+		error = extent_alloc(extio, size * VAX_NBPG, VAX_NBPG, 0,
+		    EX_NOBOUNDARY, EX_NOWAIT | EX_MALLOCOK, (u_long *)&addr);
+		if (error != 0) {
 			if (warned++ == 0) /* Warn only once */
 				printf("vax_map_physmem: iomap too small");
 			return 0;
 		}
-		addr = iospace + (pageno * VAX_NBPG);
 	}
 	ioaccess(addr, phys, size);
 #ifdef PHYSMEMDEBUG
@@ -747,8 +759,6 @@ vax_unmap_physmem(addr, size)
 	vaddr_t addr;
 	int size;
 {
-	extern vaddr_t iospace;
-	int pageno = (addr - iospace) / VAX_NBPG;
 #ifdef PHYSMEMDEBUG
 	printf("vax_unmap_physmem: unmapping %d pages at addr %lx\n", 
 	    size, addr);
@@ -757,7 +767,8 @@ vax_unmap_physmem(addr, size)
 	if (size >= LTOHPN)
 		uvm_km_free(kernel_map, addr, size * VAX_NBPG);
 	else
-		rmfree(iomap, size, pageno);
+		extent_free(extio, (u_long)addr & ~VAX_PGOFSET,
+		    size * VAX_NBPG, EX_NOWAIT);
 }
 
 /*
-- 
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