# HG changeset patch
# User yamahata@xxxxxxxxxxxxx
# Node ID c6fdb5202a674778a11cea6b2859ea27881ad9d2
# Parent  a6082da54fe964b340bf32661b0df2b70c8601b7
xen/ia64 counter part of linux-2.6-xen-sparse/drivers/xen/util.c
PATCHNAME: xen_util_linux

Signed-off-by: Isaku Yamahata <yamahata@xxxxxxxxxxxxx>

diff -r a6082da54fe9 -r c6fdb5202a67 linux-2.6-xen-sparse/arch/ia64/xen/Makefile
--- a/linux-2.6-xen-sparse/arch/ia64/xen/Makefile	Mon May  8 11:42:39 2006 +0900
+++ b/linux-2.6-xen-sparse/arch/ia64/xen/Makefile	Mon May  8 11:42:41 2006 +0900
@@ -4,5 +4,5 @@
 
 obj-y := hypercall.o xenivt.o xenentry.o xensetup.o xenpal.o xenhpski.o xenconsole.o xen_ksyms.o
 
-obj-$(CONFIG_XEN_IA64_DOM0_VP) += hypervisor.o pci-dma-xen.o
+obj-$(CONFIG_XEN_IA64_DOM0_VP) += hypervisor.o pci-dma-xen.o util.o
 pci-dma-xen-$(CONFIG_XEN_IA64_DOM0_VP) := ../../i386/kernel/pci-dma-xen.o
\ No newline at end of file
diff -r a6082da54fe9 -r c6fdb5202a67 linux-2.6-xen-sparse/arch/ia64/xen/drivers/Makefile
--- a/linux-2.6-xen-sparse/arch/ia64/xen/drivers/Makefile	Mon May  8 11:42:39 2006 +0900
+++ b/linux-2.6-xen-sparse/arch/ia64/xen/drivers/Makefile	Mon May  8 11:42:41 2006 +0900
@@ -1,5 +1,7 @@
 
+ifneq ($(CONFIG_XEN_IA64_DOM0_VP),y)
 obj-y   += util.o
+endif
 
 obj-y	+= core/
 obj-y	+= console/
diff -r a6082da54fe9 -r c6fdb5202a67 linux-2.6-xen-sparse/arch/ia64/xen/util.c
--- /dev/null	Thu Jan  1 00:00:00 1970 +0000
+++ b/linux-2.6-xen-sparse/arch/ia64/xen/util.c	Mon May  8 11:42:41 2006 +0900
@@ -0,0 +1,110 @@
+/******************************************************************************
+ * arch/ia64/xen/util.c
+ * This file is the ia64 counterpart of drivers/xen/util.c
+ *
+ * Copyright (c) 2006 Isaku Yamahata <yamahata at valinux co jp>
+ *                    VA Linux Systems Japan K.K.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ */
+
+#include <linux/config.h>
+#include <linux/mm.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/vmalloc.h>
+#include <asm/uaccess.h>
+#include <xen/driver_util.h>
+
+struct vm_struct *alloc_vm_area(unsigned long size)
+{
+	int order;
+	unsigned long virt;
+	unsigned long nr_pages;
+	struct vm_struct* area;
+	
+	order = get_order(size);
+	virt = __get_free_pages(GFP_KERNEL, order);
+	if (virt == 0) {
+		goto err0;
+	}
+	nr_pages = 1 << order;
+	scrub_pages(virt, nr_pages);
+	
+	area = kmalloc(sizeof(*area), GFP_KERNEL);
+	if (area == NULL) {
+		goto err1;
+	}
+	
+        area->flags = VM_IOREMAP;//XXX
+        area->addr = (void*)virt;
+        area->size = size;
+        area->pages = NULL; //XXX
+        area->nr_pages = nr_pages;
+        area->phys_addr = __pa(virt);
+
+	return area;
+
+err1:
+	free_pages(virt, order);
+err0:
+	return NULL;
+	
+}
+EXPORT_SYMBOL_GPL(alloc_vm_area);
+
+void free_vm_area(struct vm_struct *area)
+{
+	unsigned int order = get_order(area->size);
+	unsigned long i;
+
+	// This area is used for foreign page mappping.
+	// So underlying machine page may not be assigned.
+	for (i = 0; i < (1 << order); i++) {
+		unsigned long error;
+		error = HYPERVISOR_populate_physmap(
+			(area->phys_addr >> PAGE_SHIFT) + i, 0, 0);
+		if (error) {
+			BUG();//XXX
+			return;
+		}
+	}
+	free_pages((unsigned long)area->addr, order);
+	kfree(area);
+}
+EXPORT_SYMBOL_GPL(free_vm_area);
+
+void lock_vm_area(struct vm_struct *area)
+{
+	// nothing
+}
+EXPORT_SYMBOL_GPL(lock_vm_area);
+
+void unlock_vm_area(struct vm_struct *area)
+{
+	// nothing
+}
+EXPORT_SYMBOL_GPL(unlock_vm_area);
+
+/*
+ * Local variables:
+ *  c-file-style: "linux"
+ *  indent-tabs-mode: t
+ *  c-indent-level: 8
+ *  c-basic-offset: 8
+ *  tab-width: 8
+ * End:
+ */