/* $NetBSD: hypercalls.h,v 1.2 2020/04/25 15:26:16 bouyer Exp $ */

/* $NetBSD: hypercalls.h,v 1.2 2020/04/25 15:26:16 bouyer Exp $ */
/******************************************************************************
* hypercall.h
*
* Linux-specific hypervisor handling.
*
* Copyright (c) 2002-2004, K A Fraser
*
* 64-bit updates:
* Benjamin Liu <[email protected]>
* Jun Nakajima <[email protected]>
*
* 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; or, when distributed
* separately from the Linux kernel or incorporated into other
* software packages, subject to the following license:
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this source file (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use, copy, modify,
* merge, publish, distribute, sublicense, and/or sell copies of the Software,
* and to permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
* IN THE SOFTWARE.
*/

#ifndef __HYPERCALL_H__
#define __HYPERCALL_H__

#define __STR(x) #x
#define STR(x) __STR(x)

#define HYPERCALL_STR(name) \
"call hypercall_page + ("STR(__HYPERVISOR_##name)" * 32)"

#define _hypercall0(type, name) \
({ \
long __res; \
asm volatile ( \
HYPERCALL_STR(name) \
: "=a" (__res) \
: \
: "memory" ); \
(type)__res; \
})

#define _hypercall1(type, name, a1) \
({ \
long __res, __ign1; \
asm volatile ( \
HYPERCALL_STR(name) \
: "=a" (__res), "=D" (__ign1) \
: "1" ((long)(a1)) \
: "memory" ); \
(type)__res; \
})

#define _hypercall2(type, name, a1, a2) \
({ \
long __res, __ign1, __ign2; \
asm volatile ( \
HYPERCALL_STR(name) \
: "=a" (__res), "=D" (__ign1), "=S" (__ign2) \
: "1" ((long)(a1)), "2" ((long)(a2)) \
: "memory" ); \
(type)__res; \
})

#define _hypercall3(type, name, a1, a2, a3) \
({ \
long __res, __ign1, __ign2, __ign3; \
asm volatile ( \
HYPERCALL_STR(name) \
: "=a" (__res), "=D" (__ign1), "=S" (__ign2), \
"=d" (__ign3) \
: "1" ((long)(a1)), "2" ((long)(a2)), \
"3" ((long)(a3)) \
: "memory" ); \
(type)__res; \
})

#define _hypercall4(type, name, a1, a2, a3, a4) \
({ \
long __res, __ign1, __ign2, __ign3; \
asm volatile ( \
"movq %7,%%r10; " \
HYPERCALL_STR(name) \
: "=a" (__res), "=D" (__ign1), "=S" (__ign2), \
"=d" (__ign3) \
: "1" ((long)(a1)), "2" ((long)(a2)), \
"3" ((long)(a3)), "g" ((long)(a4)) \
: "memory", "r10" ); \
(type)__res; \
})

#define _hypercall5(type, name, a1, a2, a3, a4, a5) \
({ \
long __res, __ign1, __ign2, __ign3; \
asm volatile ( \
"movq %7,%%r10; movq %8,%%r8; " \
HYPERCALL_STR(name) \
: "=a" (__res), "=D" (__ign1), "=S" (__ign2), \
"=d" (__ign3) \
: "1" ((long)(a1)), "2" ((long)(a2)), \
"3" ((long)(a3)), "g" ((long)(a4)), \
"g" ((long)(a5)) \
: "memory", "r10", "r8" ); \
(type)__res; \
})

static inline int
HYPERVISOR_set_trap_table(
trap_info_t *table)
{
return _hypercall1(int, set_trap_table, table);
}

static inline int
HYPERVISOR_mmu_update(
mmu_update_t *req, int count, int *success_count, domid_t domid)
{
return _hypercall4(int, mmu_update, req, count, success_count, domid);
}

static inline int
HYPERVISOR_mmuext_op(
struct mmuext_op *op, int count, int *success_count, domid_t domid)
{
return _hypercall4(int, mmuext_op, op, count, success_count, domid);
}

static inline int
HYPERVISOR_set_gdt(
unsigned long *frame_list, int entries)
{
return _hypercall2(int, set_gdt, frame_list, entries);
}

static inline int
HYPERVISOR_stack_switch(
unsigned long ss, unsigned long esp)
{
return _hypercall2(int, stack_switch, ss, esp);
}

static inline int
HYPERVISOR_set_callbacks(
unsigned long event_address, unsigned long failsafe_address,
unsigned long syscall_address)
{
return _hypercall3(int, set_callbacks,
event_address, failsafe_address, syscall_address);
}

static inline int
HYPERVISOR_fpu_taskswitch(
int set)
{
return _hypercall1(int, fpu_taskswitch, set);
}

static inline int
HYPERVISOR_sched_op_compat(
int cmd, unsigned long arg)
{
return _hypercall2(int, sched_op_compat, cmd, arg);
}

static inline int
HYPERVISOR_sched_op(
int cmd, void *arg)
{
return _hypercall2(int, sched_op, cmd, arg);
}

static inline long
HYPERVISOR_set_timer_op(
u64 timeout)
{
return _hypercall1(long, set_timer_op, timeout);
}

static inline int
HYPERVISOR_platform_op(
struct xen_platform_op *platform_op)
{
platform_op->interface_version = XENPF_INTERFACE_VERSION;
return _hypercall1(int, platform_op, platform_op);
}

static inline int
HYPERVISOR_set_debugreg(
int reg, unsigned long value)
{
return _hypercall2(int, set_debugreg, reg, value);
}

static inline unsigned long
HYPERVISOR_get_debugreg(
int reg)
{
return _hypercall1(unsigned long, get_debugreg, reg);
}

static inline int
HYPERVISOR_update_descriptor(
unsigned long ma, unsigned long word)
{
return _hypercall2(int, update_descriptor, ma, word);
}

static inline int
HYPERVISOR_memory_op(
unsigned int cmd, void *arg)
{
return _hypercall2(int, memory_op, cmd, arg);
}

static inline int
HYPERVISOR_multicall(
multicall_entry_t *call_list, int nr_calls)
{
return _hypercall2(int, multicall, call_list, nr_calls);
}

static inline int
HYPERVISOR_update_va_mapping(
unsigned long va, unsigned long new_val, unsigned long flags)
{
return _hypercall3(int, update_va_mapping, va, new_val, flags);
}

static inline int
HYPERVISOR_event_channel_op(evtchn_op_t *op)
{
KASSERT(op != NULL);
#if __XEN_INTERFACE_VERSION__ < 0x00030202
return _hypercall1(int, event_channel_op, op);
#else
return _hypercall2(int, event_channel_op, op->cmd, &op->u);
#endif
}

static inline int
HYPERVISOR_acm_op(
int cmd, void *arg)
{
return _hypercall2(int, acm_op, cmd, arg);
}

static inline int
HYPERVISOR_xen_version(
int cmd, void *arg)
{
return _hypercall2(int, xen_version, cmd, arg);
}

static inline int
HYPERVISOR_console_io(
int cmd, int count, char *str)
{
return _hypercall3(int, console_io, cmd, count, str);
}

static inline int
HYPERVISOR_physdev_op(int cmd, void *op)
{
return _hypercall2(int, physdev_op, cmd, op);
}

static inline int
HYPERVISOR_grant_table_op(
unsigned int cmd, void *uop, unsigned int count)
{
return _hypercall3(int, grant_table_op, cmd, uop, count);
}

static inline int
HYPERVISOR_update_va_mapping_otherdomain(
unsigned long va, unsigned long new_val, unsigned long flags,
domid_t domid)
{
return _hypercall4(int, update_va_mapping_otherdomain, va,
new_val, flags, domid);
}

static inline int
HYPERVISOR_vm_assist(
unsigned int cmd, unsigned int type)
{
return _hypercall2(int, vm_assist, cmd, type);
}

static inline int
HYPERVISOR_vcpu_op(
int cmd, int vcpuid, void *extra_args)
{
return _hypercall3(int, vcpu_op, cmd, vcpuid, extra_args);
}

static inline int
HYPERVISOR_set_segment_base(
int reg, unsigned long value)
{
return _hypercall2(int, set_segment_base, reg, value);
}

static inline int
HYPERVISOR_suspend(
unsigned long srec)
{
#if __XEN_INTERFACE_VERSION__ >= 0x00030201

struct sched_shutdown shutdown_reason = {
.reason = SHUTDOWN_suspend,
};

return _hypercall3(int, sched_op, SCHEDOP_shutdown,
&shutdown_reason, srec);
#else
return _hypercall3(int, sched_op, SCHEDOP_shutdown,
SHUTDOWN_suspend, srec);
#endif
}

static inline long
HYPERVISOR_yield(
void)
{
return _hypercall2(int, sched_op, SCHEDOP_yield, 0);
}

static inline long
HYPERVISOR_block(
void)
{
return _hypercall2(int, sched_op, SCHEDOP_block, 0);
}

static inline long
HYPERVISOR_shutdown(
void)
{
#if __XEN_INTERFACE_VERSION__ >= 0x00030201

struct sched_shutdown shutdown_reason = {
.reason = SHUTDOWN_poweroff,
};

return _hypercall2(int, sched_op, SCHEDOP_shutdown,
&shutdown_reason);
#else
- return _hypercall2(int, sched_op, SCHEDOP_shutdown, SHUTDOWN_poweroff);
#endif
}

static inline long
HYPERVISOR_crash(
void)
{
#if __XEN_INTERFACE_VERSION__ >= 0x00030201

struct sched_shutdown shutdown_reason = {
.reason = SHUTDOWN_crash,
};

return _hypercall2(int, sched_op, SCHEDOP_shutdown,
&shutdown_reason);
#else
return _hypercall2(int, sched_op, SCHEDOP_shutdown, SHUTDOWN_crash);
#endif
}

static inline long
HYPERVISOR_reboot(
void)
{
#if __XEN_INTERFACE_VERSION__ >= 0x00030201

struct sched_shutdown shutdown_reason = {
.reason = SHUTDOWN_reboot,
};

return _hypercall2(int, sched_op, SCHEDOP_shutdown,
&shutdown_reason);
#else
return _hypercall2(int, sched_op, SCHEDOP_shutdown, SHUTDOWN_reboot);
#endif
}

static inline int
HYPERVISOR_nmi_op(
unsigned long op, void *arg)
{
return _hypercall2(int, nmi_op, op, arg);
}

static inline long
HYPERVISOR_hvm_op(
int op, void *arg)
{
return _hypercall2(long, hvm_op, op, arg);
}

static inline int
HYPERVISOR_callback_op(
int cmd, void *arg)
{
return _hypercall2(int, callback_op, cmd, arg);
}

static inline int
HYPERVISOR_xenoprof_op(
int op, void *arg)
{
return _hypercall2(int, xenoprof_op, op, arg);
}

static inline int
HYPERVISOR_kexec_op(
unsigned long op, void *args)
{
return _hypercall2(int, kexec_op, op, args);
}

#if __XEN_INTERFACE_VERSION__ < 0x00030204
static inline int
HYPERVISOR_dom0_op(
dom0_op_t *dom0_op)
{
dom0_op->interface_version = DOM0_INTERFACE_VERSION;
return _hypercall1(int, dom0_op, dom0_op);
}
#endif /* __XEN_INTERFACE_VERSION__ */

#include <xen/include/public/arch-x86/xen-mca.h>

static inline int
HYPERVISOR_machine_check(struct xen_mc *mc)
{
mc->interface_version = XEN_MCA_INTERFACE_VERSION;
return _hypercall1(int, mca, mc);
}

static inline int
HYPERVISOR_sysctl(void *sysctl)
{
return _hypercall1(int, sysctl, sysctl);
}

#endif /* __HYPERCALL_H__ */