Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/hch/hfsplus

[pandora-kernel.git] / arch / powerpc / include / asm / kvm_para.h

diff --git a/arch/powerpc/include/asm/kvm_para.h b/arch/powerpc/include/asm/kvm_para.h
index 2d48f6a..50533f9 100644 (file)
--- a/arch/powerpc/include/asm/kvm_para.h
+++ b/arch/powerpc/include/asm/kvm_para.h
@@ -20,16 +20,153 @@
 #ifndef __POWERPC_KVM_PARA_H__
 #define __POWERPC_KVM_PARA_H__
 
+#include <linux/types.h>
+
+struct kvm_vcpu_arch_shared {
+       __u64 scratch1;
+       __u64 scratch2;
+       __u64 scratch3;
+       __u64 critical;         /* Guest may not get interrupts if == r1 */
+       __u64 sprg0;
+       __u64 sprg1;
+       __u64 sprg2;
+       __u64 sprg3;
+       __u64 srr0;
+       __u64 srr1;
+       __u64 dar;
+       __u64 msr;
+       __u32 dsisr;
+       __u32 int_pending;      /* Tells the guest if we have an interrupt */
+       __u32 sr[16];
+};
+
+#define KVM_SC_MAGIC_R0                0x4b564d21 /* "KVM!" */
+#define HC_VENDOR_KVM          (42 << 16)
+#define HC_EV_SUCCESS          0
+#define HC_EV_UNIMPLEMENTED    12
+
+#define KVM_FEATURE_MAGIC_PAGE 1
+
+#define KVM_MAGIC_FEAT_SR      (1 << 0)
+
 #ifdef __KERNEL__
 
+#ifdef CONFIG_KVM_GUEST
+
+#include <linux/of.h>
+
+static inline int kvm_para_available(void)
+{
+       struct device_node *hyper_node;
+
+       hyper_node = of_find_node_by_path("/hypervisor");
+       if (!hyper_node)
+               return 0;
+
+       if (!of_device_is_compatible(hyper_node, "linux,kvm"))
+               return 0;
+
+       return 1;
+}
+
+extern unsigned long kvm_hypercall(unsigned long *in,
+                                  unsigned long *out,
+                                  unsigned long nr);
+
+#else
+
 static inline int kvm_para_available(void)
 {
        return 0;
 }
 
+static unsigned long kvm_hypercall(unsigned long *in,
+                                  unsigned long *out,
+                                  unsigned long nr)
+{
+       return HC_EV_UNIMPLEMENTED;
+}
+
+#endif
+
+static inline long kvm_hypercall0_1(unsigned int nr, unsigned long *r2)
+{
+       unsigned long in[8];
+       unsigned long out[8];
+       unsigned long r;
+
+       r = kvm_hypercall(in, out, nr | HC_VENDOR_KVM);
+       *r2 = out[0];
+
+       return r;
+}
+
+static inline long kvm_hypercall0(unsigned int nr)
+{
+       unsigned long in[8];
+       unsigned long out[8];
+
+       return kvm_hypercall(in, out, nr | HC_VENDOR_KVM);
+}
+
+static inline long kvm_hypercall1(unsigned int nr, unsigned long p1)
+{
+       unsigned long in[8];
+       unsigned long out[8];
+
+       in[0] = p1;
+       return kvm_hypercall(in, out, nr | HC_VENDOR_KVM);
+}
+
+static inline long kvm_hypercall2(unsigned int nr, unsigned long p1,
+                                 unsigned long p2)
+{
+       unsigned long in[8];
+       unsigned long out[8];
+
+       in[0] = p1;
+       in[1] = p2;
+       return kvm_hypercall(in, out, nr | HC_VENDOR_KVM);
+}
+
+static inline long kvm_hypercall3(unsigned int nr, unsigned long p1,
+                                 unsigned long p2, unsigned long p3)
+{
+       unsigned long in[8];
+       unsigned long out[8];
+
+       in[0] = p1;
+       in[1] = p2;
+       in[2] = p3;
+       return kvm_hypercall(in, out, nr | HC_VENDOR_KVM);
+}
+
+static inline long kvm_hypercall4(unsigned int nr, unsigned long p1,
+                                 unsigned long p2, unsigned long p3,
+                                 unsigned long p4)
+{
+       unsigned long in[8];
+       unsigned long out[8];
+
+       in[0] = p1;
+       in[1] = p2;
+       in[2] = p3;
+       in[3] = p4;
+       return kvm_hypercall(in, out, nr | HC_VENDOR_KVM);
+}
+
+
 static inline unsigned int kvm_arch_para_features(void)
 {
-       return 0;
+       unsigned long r;
+
+       if (!kvm_para_available())
+               return 0;
+
+       if(kvm_hypercall0_1(KVM_HC_FEATURES, &r))
+               return 0;
+
+       return r;
 }
 
 #endif /* __KERNEL__ */