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/******************************************************************************
* hypervisor.h
*
* Linux-specific hypervisor handling.
*
* Copyright (c) 2002, K A Fraser
*/
#ifndef __HYPERVISOR_H__
#define __HYPERVISOR_H__
#include <asm/hypervisor-ifs/hypervisor-if.h>
#include <asm/ptrace.h>
/* arch/xeno/kernel/setup.c */
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)
/* arch/xeno/kernel/hypervisor.c */
void do_hypervisor_callback(struct pt_regs *regs);
/* arch/xeno/mm/hypervisor.c */
/*
* NB. ptr values should be fake-physical. 'vals' should be alread
* fully adjusted (ie. for start_info.phys_base).
*/
void queue_l1_entry_update(unsigned long ptr, unsigned long val);
void queue_l2_entry_update(unsigned long ptr, unsigned long val);
void queue_baseptr_create(unsigned long ptr);
void queue_baseptr_remove(unsigned long ptr);
void queue_tlb_flush(void);
void queue_tlb_flush_one(unsigned long ptr);
void flush_page_update_queue(void);
/*
* 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) );
return ret;
}
static inline int HYPERVISOR_pt_update(page_update_request_t *req, int count)
{
int ret;
__asm__ __volatile__ (
TRAP_INSTR
: "=a" (ret) : "0" (__HYPERVISOR_pt_update),
"b" (req), "c" (count) );
return ret;
}
static inline int HYPERVISOR_console_write(const char *str, int count)
{
int ret;
__asm__ __volatile__ (
TRAP_INSTR
: "=a" (ret) : "0" (__HYPERVISOR_console_write),
"b" (str), "c" (count) );
return ret;
}
static inline int HYPERVISOR_set_pagetable(unsigned long ptr)
{
int ret;
__asm__ __volatile__ (
TRAP_INSTR
: "=a" (ret) : "0" (__HYPERVISOR_set_pagetable),
"b" (ptr) );
return ret;
}
static inline int HYPERVISOR_set_guest_stack(
unsigned long ss, unsigned long esp)
{
int ret;
__asm__ __volatile__ (
TRAP_INSTR
: "=a" (ret) : "0" (__HYPERVISOR_set_guest_stack),
"b" (ss), "c" (esp) );
return ret;
}
static inline int HYPERVISOR_net_update(void)
{
int ret;
__asm__ __volatile__ (
TRAP_INSTR
: "=a" (ret) : "0" (__HYPERVISOR_net_update) );
return ret;
}
static inline int HYPERVISOR_fpu_taskswitch(void)
{
int ret;
__asm__ __volatile__ (
TRAP_INSTR
: "=a" (ret) : "0" (__HYPERVISOR_fpu_taskswitch) );
return ret;
}
static inline int HYPERVISOR_yield(void)
{
int ret;
__asm__ __volatile__ (
TRAP_INSTR
: "=a" (ret) : "0" (__HYPERVISOR_yield) );
return ret;
}
static inline int HYPERVISOR_exit(void)
{
int ret;
__asm__ __volatile__ (
TRAP_INSTR
: "=a" (ret) : "0" (__HYPERVISOR_exit) );
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_network_op(void *network_op)
{
int ret;
__asm__ __volatile__ (
TRAP_INSTR
: "=a" (ret) : "0" (__HYPERVISOR_network_op),
"b" (network_op) );
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) );
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) );
return ret;
}
#endif /* __HYPERVISOR_H__ */
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