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/******************************************************************************
* hypervisor.h
*
* Linux-specific hypervisor handling.
*
* Copyright (c) 2002, K A Fraser
*/
#ifndef _HYPERVISOR_H_
#define _HYPERVISOR_H_
#include <types.h>
#include <xen-public/xen.h>
#include <xen-public/io/domain_controller.h>
/*
* a placeholder for the start of day information passed up from the hypervisor
*/
union start_info_union
{
start_info_t start_info;
char padding[512];
};
extern union start_info_union start_info_union;
#define start_info (start_info_union.start_info)
/* hypervisor.c */
void do_hypervisor_callback(struct pt_regs *regs);
void enable_hypervisor_event(unsigned int ev);
void disable_hypervisor_event(unsigned int ev);
void ack_hypervisor_event(unsigned int ev);
/*
* Assembler stubs for hyper-calls.
*/
static __inline__ int HYPERVISOR_set_trap_table(trap_info_t *table)
{
int ret;
__asm__ __volatile__ (
TRAP_INSTR
: "=a" (ret) : "0" (__HYPERVISOR_set_trap_table),
"b" (table) : "memory" );
return ret;
}
static __inline__ int HYPERVISOR_mmu_update(mmu_update_t *req,
int count,
int *success_count)
{
int ret;
__asm__ __volatile__ (
TRAP_INSTR
: "=a" (ret) : "0" (__HYPERVISOR_mmu_update),
"b" (req), "c" (count), "d" (success_count) : "memory" );
return ret;
}
static __inline__ int HYPERVISOR_set_gdt(unsigned long *frame_list, int entries)
{
int ret;
__asm__ __volatile__ (
TRAP_INSTR
: "=a" (ret) : "0" (__HYPERVISOR_set_gdt),
"b" (frame_list), "c" (entries) : "memory" );
return ret;
}
static __inline__ int HYPERVISOR_stack_switch(unsigned long ss, unsigned long esp)
{
int ret;
__asm__ __volatile__ (
TRAP_INSTR
: "=a" (ret) : "0" (__HYPERVISOR_stack_switch),
"b" (ss), "c" (esp) : "memory" );
return ret;
}
static __inline__ int HYPERVISOR_set_callbacks(
unsigned long event_selector, unsigned long event_address,
unsigned long failsafe_selector, unsigned long failsafe_address)
{
int ret;
__asm__ __volatile__ (
TRAP_INSTR
: "=a" (ret) : "0" (__HYPERVISOR_set_callbacks),
"b" (event_selector), "c" (event_address),
"d" (failsafe_selector), "S" (failsafe_address) : "memory" );
return ret;
}
static __inline__ int HYPERVISOR_fpu_taskswitch(void)
{
int ret;
__asm__ __volatile__ (
TRAP_INSTR
: "=a" (ret) : "0" (__HYPERVISOR_fpu_taskswitch) : "memory" );
return ret;
}
static __inline__ int HYPERVISOR_yield(void)
{
int ret;
__asm__ __volatile__ (
TRAP_INSTR
: "=a" (ret) : "0" (__HYPERVISOR_sched_op),
"b" (SCHEDOP_yield) : "memory" );
return ret;
}
static __inline__ int HYPERVISOR_block(void)
{
int ret;
__asm__ __volatile__ (
TRAP_INSTR
: "=a" (ret) : "0" (__HYPERVISOR_sched_op),
"b" (SCHEDOP_block) : "memory" );
return ret;
}
static __inline__ int HYPERVISOR_shutdown(void)
{
int ret;
__asm__ __volatile__ (
TRAP_INSTR
: "=a" (ret) : "0" (__HYPERVISOR_sched_op),
"b" (SCHEDOP_shutdown | (SHUTDOWN_poweroff << SCHEDOP_reasonshift))
: "memory" );
return ret;
}
static __inline__ int HYPERVISOR_reboot(void)
{
int ret;
__asm__ __volatile__ (
TRAP_INSTR
: "=a" (ret) : "0" (__HYPERVISOR_sched_op),
"b" (SCHEDOP_shutdown | (SHUTDOWN_reboot << SCHEDOP_reasonshift))
: "memory" );
return ret;
}
static __inline__ int HYPERVISOR_suspend(unsigned long srec)
{
int ret;
/* NB. On suspend, control software expects a suspend record in %esi. */
__asm__ __volatile__ (
TRAP_INSTR
: "=a" (ret) : "0" (__HYPERVISOR_sched_op),
"b" (SCHEDOP_shutdown | (SHUTDOWN_suspend << SCHEDOP_reasonshift)),
"S" (srec) : "memory" );
return ret;
}
static __inline__ long HYPERVISOR_set_timer_op(void *timer_arg)
{
int ret;
__asm__ __volatile__ (
TRAP_INSTR
: "=a" (ret) : "0" (__HYPERVISOR_set_timer_op),
"b" (timer_arg) : "memory" );
return ret;
}
static __inline__ int HYPERVISOR_dom0_op(void *dom0_op)
{
int ret;
__asm__ __volatile__ (
TRAP_INSTR
: "=a" (ret) : "0" (__HYPERVISOR_dom0_op),
"b" (dom0_op) : "memory" );
return ret;
}
static __inline__ int HYPERVISOR_set_debugreg(int reg, unsigned long value)
{
int ret;
__asm__ __volatile__ (
TRAP_INSTR
: "=a" (ret) : "0" (__HYPERVISOR_set_debugreg),
"b" (reg), "c" (value) : "memory" );
return ret;
}
static __inline__ unsigned long HYPERVISOR_get_debugreg(int reg)
{
unsigned long ret;
__asm__ __volatile__ (
TRAP_INSTR
: "=a" (ret) : "0" (__HYPERVISOR_get_debugreg),
"b" (reg) : "memory" );
return ret;
}
static __inline__ int HYPERVISOR_update_descriptor(
unsigned long pa, unsigned long word1, unsigned long word2)
{
int ret;
__asm__ __volatile__ (
TRAP_INSTR
: "=a" (ret) : "0" (__HYPERVISOR_update_descriptor),
"b" (pa), "c" (word1), "d" (word2) : "memory" );
return ret;
}
static __inline__ int HYPERVISOR_set_fast_trap(int idx)
{
int ret;
__asm__ __volatile__ (
TRAP_INSTR
: "=a" (ret) : "0" (__HYPERVISOR_set_fast_trap),
"b" (idx) : "memory" );
return ret;
}
static __inline__ int HYPERVISOR_dom_mem_op(void *dom_mem_op)
{
int ret;
__asm__ __volatile__ (
TRAP_INSTR
: "=a" (ret) : "0" (__HYPERVISOR_dom_mem_op),
"b" (dom_mem_op) : "memory" );
return ret;
}
static __inline__ int HYPERVISOR_multicall(void *call_list, int nr_calls)
{
int ret;
__asm__ __volatile__ (
TRAP_INSTR
: "=a" (ret) : "0" (__HYPERVISOR_multicall),
"b" (call_list), "c" (nr_calls) : "memory" );
return ret;
}
static __inline__ int HYPERVISOR_update_va_mapping(
unsigned long page_nr, unsigned long new_val, unsigned long flags)
{
int ret;
__asm__ __volatile__ (
TRAP_INSTR
: "=a" (ret) : "0" (__HYPERVISOR_update_va_mapping),
"b" (page_nr), "c" (new_val), "d" (flags) : "memory" );
return ret;
}
static __inline__ int HYPERVISOR_xen_version(int cmd)
{
int ret;
__asm__ __volatile__ (
TRAP_INSTR
: "=a" (ret) : "0" (__HYPERVISOR_xen_version),
"b" (cmd) : "memory" );
return ret;
}
static __inline__ int HYPERVISOR_console_io(int cmd, int count, char *str)
{
int ret;
__asm__ __volatile__ (
TRAP_INSTR
: "=a" (ret) : "0" (__HYPERVISOR_console_io),
"b" (cmd), "c" (count), "d" (str) : "memory" );
return ret;
}
#endif /* __HYPERVISOR_H__ */
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