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.
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.
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.
15 * Copyright IBM Corp. 2008
17 * Authors: Hollis Blanchard <hollisb@us.ibm.com>
19 #ifndef __POWERPC_KVM_PARA_H__
20 #define __POWERPC_KVM_PARA_H__
22 #include <uapi/asm/kvm_para.h>
24 #ifdef CONFIG_KVM_GUEST
28 static inline int kvm_para_available(void)
30 struct device_node *hyper_node;
32 hyper_node = of_find_node_by_path("/hypervisor");
36 if (!of_device_is_compatible(hyper_node, "linux,kvm"))
42 extern unsigned long kvm_hypercall(unsigned long *in,
48 static inline int kvm_para_available(void)
53 static unsigned long kvm_hypercall(unsigned long *in,
57 return EV_UNIMPLEMENTED;
62 static inline long kvm_hypercall0_1(unsigned int nr, unsigned long *r2)
68 r = kvm_hypercall(in, out, KVM_HCALL_TOKEN(nr));
74 static inline long kvm_hypercall0(unsigned int nr)
79 return kvm_hypercall(in, out, KVM_HCALL_TOKEN(nr));
82 static inline long kvm_hypercall1(unsigned int nr, unsigned long p1)
88 return kvm_hypercall(in, out, KVM_HCALL_TOKEN(nr));
91 static inline long kvm_hypercall2(unsigned int nr, unsigned long p1,
99 return kvm_hypercall(in, out, KVM_HCALL_TOKEN(nr));
102 static inline long kvm_hypercall3(unsigned int nr, unsigned long p1,
103 unsigned long p2, unsigned long p3)
106 unsigned long out[8];
111 return kvm_hypercall(in, out, KVM_HCALL_TOKEN(nr));
114 static inline long kvm_hypercall4(unsigned int nr, unsigned long p1,
115 unsigned long p2, unsigned long p3,
119 unsigned long out[8];
125 return kvm_hypercall(in, out, KVM_HCALL_TOKEN(nr));
129 static inline unsigned int kvm_arch_para_features(void)
133 if (!kvm_para_available())
136 if(kvm_hypercall0_1(KVM_HC_FEATURES, &r))
142 static inline bool kvm_check_and_clear_guest_paused(void)
147 #endif /* __POWERPC_KVM_PARA_H__ */