1 files changed, 51 insertions, 0 deletions

diff --git a/include/kvm/arm_psci.h b/include/kvm/arm_psci.h
new file mode 100644
index 000000000000..e518e4e3dfb5
--- /dev/null
+++ b/include/kvm/arm_psci.h
@@ -0,0 +1,51 @@
+/*
+ * Copyright (C) 2012,2013 - ARM Ltd
+ * Author: Marc Zyngier <marc.zyngier@arm.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * 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, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef __KVM_ARM_PSCI_H__
+#define __KVM_ARM_PSCI_H__
+
+#include <linux/kvm_host.h>
+#include <uapi/linux/psci.h>
+
+#define KVM_ARM_PSCI_0_1        PSCI_VERSION(0, 1)
+#define KVM_ARM_PSCI_0_2        PSCI_VERSION(0, 2)
+#define KVM_ARM_PSCI_1_0        PSCI_VERSION(1, 0)
+
+#define KVM_ARM_PSCI_LATEST     KVM_ARM_PSCI_1_0
+
+/*
+ * We need the KVM pointer independently from the vcpu as we can call
+ * this from HYP, and need to apply kern_hyp_va on it...
+ */
+static inline int kvm_psci_version(struct kvm_vcpu *vcpu, struct kvm *kvm)
+{
+        /*
+         * Our PSCI implementation stays the same across versions from
+         * v0.2 onward, only adding the few mandatory functions (such
+         * as FEATURES with 1.0) that are required by newer
+         * revisions. It is thus safe to return the latest.
+         */
+        if (test_bit(KVM_ARM_VCPU_PSCI_0_2, vcpu->arch.features))
+                return KVM_ARM_PSCI_LATEST;
+
+        return KVM_ARM_PSCI_0_1;
+}
+
+
+int kvm_hvc_call_handler(struct kvm_vcpu *vcpu);
+
+#endif /* __KVM_ARM_PSCI_H__ */