1 /******************************************************************************
4 * Linux-specific hypervisor handling.
6 * Copyright (c) 2002-2004, K A Fraser
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License version 2
10 * as published by the Free Software Foundation; or, when distributed
11 * separately from the Linux kernel or incorporated into other
12 * software packages, subject to the following license:
14 * Permission is hereby granted, free of charge, to any person obtaining a copy
15 * of this source file (the "Software"), to deal in the Software without
16 * restriction, including without limitation the rights to use, copy, modify,
17 * merge, publish, distribute, sublicense, and/or sell copies of the Software,
18 * and to permit persons to whom the Software is furnished to do so, subject to
19 * the following conditions:
21 * The above copyright notice and this permission notice shall be included in
22 * all copies or substantial portions of the Software.
24 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
25 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
26 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
27 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
28 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
29 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
33 #ifndef _ASM_IA64_XEN_HYPERVISOR_H
34 #define _ASM_IA64_XEN_HYPERVISOR_H
38 #include <linux/init.h>
39 #include <xen/interface/xen.h>
40 #include <xen/interface/version.h> /* to compile feature.c */
41 #include <xen/features.h> /* to comiple xen-netfront.c */
42 #include <asm/xen/hypercall.h>
44 /* xen_domain_type is set before executing any C code by early_xen_setup */
45 enum xen_domain_type {
51 extern enum xen_domain_type xen_domain_type;
53 #define xen_domain() (xen_domain_type != XEN_NATIVE)
54 #define xen_pv_domain() (xen_domain_type == XEN_PV_DOMAIN)
55 #define xen_initial_domain() (xen_pv_domain() && \
56 (xen_start_info->flags & SIF_INITDOMAIN))
57 #define xen_hvm_domain() (xen_domain_type == XEN_HVM_DOMAIN)
59 /* deprecated. remove this */
60 #define is_running_on_xen() (xen_domain_type == XEN_PV_DOMAIN)
62 extern struct shared_info *HYPERVISOR_shared_info;
63 extern struct start_info *xen_start_info;
65 void __init xen_setup_vcpu_info_placement(void);
66 void force_evtchn_callback(void);
68 /* for drivers/xen/balloon/balloon.c */
69 #ifdef CONFIG_XEN_SCRUB_PAGES
70 #define scrub_pages(_p, _n) memset((void *)(_p), 0, (_n) << PAGE_SHIFT)
72 #define scrub_pages(_p, _n) ((void)0)
75 /* For setup_arch() in arch/ia64/kernel/setup.c */
76 void xen_ia64_enable_opt_feature(void);
78 #else /* CONFIG_XEN */
80 #define xen_domain() (0)
81 #define xen_pv_domain() (0)
82 #define xen_initial_domain() (0)
83 #define xen_hvm_domain() (0)
84 #define is_running_on_xen() (0) /* deprecated. remove this */
87 #define is_initial_xendomain() (0) /* deprecated. remove this */
89 #endif /* _ASM_IA64_XEN_HYPERVISOR_H */