forked from luck/tmp_suning_uos_patched
90dfdc7ceb
Introduce kvm_hypercall[0-3].
Define three new hypercalls for MIPS: GET_CLOCK_FREQ, EXIT_VM, and
CONSOLE_OUTPUT.
[andreas.herrmann:
* Properly define hypercalls and HC numbers for MIPS
in kvm_para.h header files]
Signed-off-by: David Daney <david.daney@cavium.com>
Signed-off-by: Andreas Herrmann <andreas.herrmann@caviumnetworks.com>
Cc: linux-mips@linux-mips.org
Cc: James Hogan <james.hogan@imgtec.com>
Cc: kvm@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/7005/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
110 lines
2.1 KiB
C
110 lines
2.1 KiB
C
#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 */
|