[deliverable/linux.git] / arch / mips / include / asm / kvm_para.h

#ifndef _ASM_MIPS_KVM_PARA_H
#define _ASM_MIPS_KVM_PARA_H

#include <uapi/asm/kvm_para.h>

#define KVM_HYPERCALL ".word 0x42000028"

/*
 * Hypercalls for KVM.
 *
 * Hypercall number is passed in v0.
 * Return value will be placed in v0.
 * Up to 3 arguments are passed in a0, a1, and a2.
 */
static inline unsigned long kvm_hypercall0(unsigned long num)
{
	register unsigned long n asm("v0");
	register unsigned long r asm("v0");

	n = num;
	__asm__ __volatile__(
		KVM_HYPERCALL
		: "=r" (r) : "r" (n) : "memory"
		);

	return r;
}

static inline unsigned long kvm_hypercall1(unsigned long num,
					unsigned long arg0)
{
	register unsigned long n asm("v0");
	register unsigned long r asm("v0");
	register unsigned long a0 asm("a0");

	n = num;
	a0 = arg0;
	__asm__ __volatile__(
		KVM_HYPERCALL
		: "=r" (r) : "r" (n), "r" (a0) : "memory"
		);

	return r;
}

static inline unsigned long kvm_hypercall2(unsigned long num,
					unsigned long arg0, unsigned long arg1)
{
	register unsigned long n asm("v0");
	register unsigned long r asm("v0");
	register unsigned long a0 asm("a0");
	register unsigned long a1 asm("a1");

	n = num;
	a0 = arg0;
	a1 = arg1;
	__asm__ __volatile__(
		KVM_HYPERCALL
		: "=r" (r) : "r" (n), "r" (a0), "r" (a1) : "memory"
		);

	return r;
}

static inline unsigned long kvm_hypercall3(unsigned long num,
	unsigned long arg0, unsigned long arg1, unsigned long arg2)
{
	register unsigned long n asm("v0");
	register unsigned long r asm("v0");
	register unsigned long a0 asm("a0");
	register unsigned long a1 asm("a1");
	register unsigned long a2 asm("a2");

	n = num;
	a0 = arg0;
	a1 = arg1;
	a2 = arg2;
	__asm__ __volatile__(
		KVM_HYPERCALL
		: "=r" (r) : "r" (n), "r" (a0), "r" (a1), "r" (a2) : "memory"
		);

	return r;
}

static inline bool kvm_check_and_clear_guest_paused(void)
{
	return false;
}

static inline unsigned int kvm_arch_para_features(void)
{
	return 0;
}

#ifdef CONFIG_MIPS_PARAVIRT
static inline bool kvm_para_available(void)
{
	return true;
}
#else
static inline bool kvm_para_available(void)
{
	return false;
}
#endif


#endif /* _ASM_MIPS_KVM_PARA_H */
Commit	Line	Data
90dfdc7c DD	1	#ifndef _ASM_MIPS_KVM_PARA_H
	2	#define _ASM_MIPS_KVM_PARA_H
	3
	4	#include <uapi/asm/kvm_para.h>
	5
	6	#define KVM_HYPERCALL ".word 0x42000028"
	7
	8	/*
	9	* Hypercalls for KVM.
	10	*
	11	* Hypercall number is passed in v0.
	12	* Return value will be placed in v0.
	13	* Up to 3 arguments are passed in a0, a1, and a2.
	14	*/
	15	static inline unsigned long kvm_hypercall0(unsigned long num)
	16	{
	17	register unsigned long n asm("v0");
	18	register unsigned long r asm("v0");
	19
	20	n = num;
	21	__asm__ __volatile__(
	22	KVM_HYPERCALL
	23	: "=r" (r) : "r" (n) : "memory"
	24	);
	25
	26	return r;
	27	}
	28
	29	static inline unsigned long kvm_hypercall1(unsigned long num,
	30	unsigned long arg0)
	31	{
	32	register unsigned long n asm("v0");
	33	register unsigned long r asm("v0");
	34	register unsigned long a0 asm("a0");
	35
	36	n = num;
	37	a0 = arg0;
	38	__asm__ __volatile__(
	39	KVM_HYPERCALL
	40	: "=r" (r) : "r" (n), "r" (a0) : "memory"
	41	);
	42
	43	return r;
	44	}
	45
	46	static inline unsigned long kvm_hypercall2(unsigned long num,
	47	unsigned long arg0, unsigned long arg1)
	48	{
	49	register unsigned long n asm("v0");
	50	register unsigned long r asm("v0");
	51	register unsigned long a0 asm("a0");
	52	register unsigned long a1 asm("a1");
	53
	54	n = num;
	55	a0 = arg0;
	56	a1 = arg1;
	57	__asm__ __volatile__(
	58	KVM_HYPERCALL
	59	: "=r" (r) : "r" (n), "r" (a0), "r" (a1) : "memory"
	60	);
	61
	62	return r;
	63	}
	64
65	static inline unsigned long kvm_hypercall3(unsigned long num,
66	unsigned long arg0, unsigned long arg1, unsigned long arg2)
67	{
68	register unsigned long n asm("v0");
69	register unsigned long r asm("v0");
70	register unsigned long a0 asm("a0");
71	register unsigned long a1 asm("a1");
72	register unsigned long a2 asm("a2");
73
74	n = num;
75	a0 = arg0;
76	a1 = arg1;
77	a2 = arg2;
78	__asm__ __volatile__(
79	KVM_HYPERCALL
80	: "=r" (r) : "r" (n), "r" (a0), "r" (a1), "r" (a2) : "memory"
81	);
82
83	return r;
84	}
85
86	static inline bool kvm_check_and_clear_guest_paused(void)
87	{
88	return false;
89	}
90
91	static inline unsigned int kvm_arch_para_features(void)
92	{
93	return 0;
94	}
95
96	#ifdef CONFIG_MIPS_PARAVIRT
97	static inline bool kvm_para_available(void)
98	{
99	return true;
100	}
101	#else
102	static inline bool kvm_para_available(void)
103	{
104	return false;
105	}
106	#endif
107
108
109	#endif /* _ASM_MIPS_KVM_PARA_H */