1/*
2 * This program is free software; you can redistribute it and/or modify
3 * it under the terms of the GNU General Public License, version 2, as
4 * published by the Free Software Foundation.
5 *
6 * This program is distributed in the hope that it will be useful,
7 * but WITHOUT ANY WARRANTY; without even the implied warranty of
8 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
9 * GNU General Public License for more details.
10 *
11 * You should have received a copy of the GNU General Public License
12 * along with this program; if not, write to the Free Software
13 * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
14 *
15 * Copyright IBM Corp. 2008
16 *
17 * Authors: Hollis Blanchard <hollisb@us.ibm.com>
18 */
19#ifndef __POWERPC_KVM_PARA_H__
20#define __POWERPC_KVM_PARA_H__
21
22#include <uapi/asm/kvm_para.h>
23
24#ifdef CONFIG_KVM_GUEST
25
26#include <linux/of.h>
27
28static inline int kvm_para_available(void)
29{
30	struct device_node *hyper_node;
31
32	hyper_node = of_find_node_by_path("/hypervisor");
33	if (!hyper_node)
34		return 0;
35
36	if (!of_device_is_compatible(hyper_node, "linux,kvm"))
37		return 0;
38
39	return 1;
40}
41
42#else
43
44static inline int kvm_para_available(void)
45{
46	return 0;
47}
48
49#endif
50
51static inline unsigned int kvm_arch_para_features(void)
52{
53	unsigned long r;
54
55	if (!kvm_para_available())
56		return 0;
57
58	if(epapr_hypercall0_1(KVM_HCALL_TOKEN(KVM_HC_FEATURES), &r))
59		return 0;
60
61	return r;
62}
63
64static inline bool kvm_check_and_clear_guest_paused(void)
65{
66	return false;
67}
68
69#endif /* __POWERPC_KVM_PARA_H__ */
70