From acfdfd647b574e4e41b68e189327c38385463c69 Mon Sep 17 00:00:00 2001
From: Jake Burkholder <jake@FreeBSD.org>
Date: Sat, 23 Feb 2002 03:36:04 +0000
Subject: [PATCH] Add OF_claim_virt() and OF_release_phys().

Submitted by:	tmm
---
 sys/boot/ofw/libofw/openfirm.c | 70 ++++++++++++++++++++++++++++++++++
 sys/boot/ofw/libofw/openfirm.h |  2 +
 2 files changed, 72 insertions(+)

diff --git a/sys/boot/ofw/libofw/openfirm.c b/sys/boot/ofw/libofw/openfirm.c
index 3970d95eddd..bb2dd20d448 100644
--- a/sys/boot/ofw/libofw/openfirm.c
+++ b/sys/boot/ofw/libofw/openfirm.c
@@ -705,6 +705,45 @@ OF_claim(void *virt, u_int size, u_int align)
 	return (void *)args.baseaddr;
 }
 
+/* Allocate an area of physical memory */
+vm_offset_t
+OF_claim_virt(vm_offset_t virt, size_t size, int align)
+{
+	static struct {
+		cell_t	name;
+		cell_t	nargs;
+		cell_t	nret;
+		cell_t	method;
+		cell_t	ihandle;
+		cell_t	align;
+		cell_t	size;
+		cell_t	virt;
+		cell_t	status;
+		cell_t	ret;
+	} args = {
+		(cell_t)"call-method",
+		5,
+		2,
+		(cell_t)"claim",
+		0,
+		0,
+		0,
+		0,
+		0,	/* ret */
+		0,
+	};
+
+	args.ihandle = mmu;
+	args.align = align;
+	args.size = size;
+	args.virt = virt;
+
+	if (openfirmware(&args) == -1)
+		return (vm_offset_t)-1;
+
+	return (vm_offset_t)args.ret;
+}
+
 /* Allocate an area of physical memory */
 void *
 OF_alloc_phys(size_t size, int align)
@@ -766,6 +805,37 @@ OF_release(void *virt, u_int size)
 	openfirmware(&args);
 }
 
+/* Release an area of physical memory. */
+void
+OF_release_phys(vm_offset_t phys, u_int size)
+{
+	static struct {
+		cell_t	name;
+		cell_t	nargs;
+		cell_t	nret;
+		cell_t	method;
+		cell_t	ihandle;
+		cell_t	size;
+		cell_t	phys_hi;
+		cell_t	phys_lo;
+	} args = {
+		(cell_t)"call-method",
+		5,
+		0,
+		(cell_t)"release",
+		0,
+		0,
+		0,
+		0
+	};
+
+	args.ihandle = memory;
+	args.phys_hi = (u_int32_t)(phys >> 32);
+	args.phys_lo = (u_int32_t)phys;
+	args.size = size;
+	openfirmware(&args);
+}
+
 /*
  * Control transfer functions.
  */
diff --git a/sys/boot/ofw/libofw/openfirm.h b/sys/boot/ofw/libofw/openfirm.h
index 90e9d9ed408..86c39b080e4 100644
--- a/sys/boot/ofw/libofw/openfirm.h
+++ b/sys/boot/ofw/libofw/openfirm.h
@@ -105,8 +105,10 @@ int		OF_seek(ihandle_t, u_quad_t);
 
 /* Memory functions */
 void 		*OF_claim(void *, u_int, u_int);
+vm_offset_t 	OF_claim_virt(vm_offset_t, size_t, int);
 void		*OF_alloc_phys(size_t, int);
 void		OF_release(void *, u_int);
+void		OF_release_phys(vm_offset_t, u_int);
 
 /* Control transfer functions */
 void		OF_boot(char *);