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fa9ecc30bfbf9ac5ecfc4eb0f0cefbdc50f92f21
xen/extras/mini-os/include/hypervisor.h
T
kaf24@firebug.cl.cam.ac.uk ca068fad60 I've created a patch to get the mini-os to compile in Xen-unstable. The patch 
is pretty big, but this is mostly because I've replaced hypervisor.h with the
hypercalls.h header file from Linux (which seems easier to maintain
anyway). I've ignored X86_64.

Signed-off-by: Simon Kagstrom <simon.kagstrom@bth.se>
2005-10-27 17:43:29 +01:00

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/******************************************************************************
* hypervisor.h
*
* Hypervisor handling.
*
* TODO - x86_64 broken!
*
* Copyright (c) 2002, K A Fraser
* Copyright (c) 2005, Grzegorz Milos
*/
#ifndef _HYPERVISOR_H_
#define _HYPERVISOR_H_
#include <types.h>
#include <xen/xen.h>
#include <xen/dom0_ops.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 mask_evtchn(u32 port);
void unmask_evtchn(u32 port);
void clear_evtchn(u32 port);
/*
* Assembler stubs for hyper-calls.
*/
#if defined(__i386__)
/* Taken from Linux */
#ifndef __HYPERCALL_H__
#define __HYPERCALL_H__
#include <xen/sched.h>
#define _hypercall0(type, name) \
({ \
long __res; \
asm volatile ( \
TRAP_INSTR \
: "=a" (__res) \
: "0" (__HYPERVISOR_##name) \
: "memory" ); \
(type)__res; \
})
#define _hypercall1(type, name, a1) \
({ \
long __res, __ign1; \
asm volatile ( \
TRAP_INSTR \
: "=a" (__res), "=b" (__ign1) \
: "0" (__HYPERVISOR_##name), "1" ((long)(a1)) \
: "memory" ); \
(type)__res; \
})
#define _hypercall2(type, name, a1, a2) \
({ \
long __res, __ign1, __ign2; \
asm volatile ( \
TRAP_INSTR \
: "=a" (__res), "=b" (__ign1), "=c" (__ign2) \
: "0" (__HYPERVISOR_##name), "1" ((long)(a1)), \
"2" ((long)(a2)) \
: "memory" ); \
(type)__res; \
})
#define _hypercall3(type, name, a1, a2, a3) \
({ \
long __res, __ign1, __ign2, __ign3; \
asm volatile ( \
TRAP_INSTR \
: "=a" (__res), "=b" (__ign1), "=c" (__ign2), \
"=d" (__ign3) \
: "0" (__HYPERVISOR_##name), "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, __ign4; \
asm volatile ( \
TRAP_INSTR \
: "=a" (__res), "=b" (__ign1), "=c" (__ign2), \
"=d" (__ign3), "=S" (__ign4) \
: "0" (__HYPERVISOR_##name), "1" ((long)(a1)), \
"2" ((long)(a2)), "3" ((long)(a3)), \
"4" ((long)(a4)) \
: "memory" ); \
(type)__res; \
})
#define _hypercall5(type, name, a1, a2, a3, a4, a5) \
({ \
long __res, __ign1, __ign2, __ign3, __ign4, __ign5; \
asm volatile ( \
TRAP_INSTR \
: "=a" (__res), "=b" (__ign1), "=c" (__ign2), \
"=d" (__ign3), "=S" (__ign4), "=D" (__ign5) \
: "0" (__HYPERVISOR_##name), "1" ((long)(a1)), \
"2" ((long)(a2)), "3" ((long)(a3)), \
"4" ((long)(a4)), "5" ((long)(a5)) \
: "memory" ); \
(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_selector, unsigned long event_address,
unsigned long failsafe_selector, unsigned long failsafe_address)
{
return _hypercall4(int, set_callbacks,
event_selector, event_address,
failsafe_selector, failsafe_address);
}
static inline int
HYPERVISOR_fpu_taskswitch(
int set)
{
return _hypercall1(int, fpu_taskswitch, set);
}
static inline int
HYPERVISOR_sched_op(
int cmd, unsigned long arg)
{
return _hypercall2(int, sched_op, cmd, arg);
}
static inline long
HYPERVISOR_set_timer_op(
u64 timeout)
{
unsigned long timeout_hi = (unsigned long)(timeout>>32);
unsigned long timeout_lo = (unsigned long)timeout;
return _hypercall2(long, set_timer_op, timeout_lo, timeout_hi);
}
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);
}
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(
u64 ma, u64 desc)
{
return _hypercall4(int, update_descriptor, ma, ma>>32, desc, desc>>32);
}
static inline int
HYPERVISOR_memory_op(
unsigned int cmd, void *arg)
{
return _hypercall2(int, memory_op, cmd, arg);
}
static inline int
HYPERVISOR_multicall(
void *call_list, int nr_calls)
{
return _hypercall2(int, multicall, call_list, nr_calls);
}
static inline int
HYPERVISOR_update_va_mapping(
unsigned long va, pte_t new_val, unsigned long flags)
{
unsigned long pte_hi = 0;
#ifdef CONFIG_X86_PAE
pte_hi = new_val.pte_high;
#endif
return _hypercall4(int, update_va_mapping, va,
new_val.pte_low, pte_hi, flags);
}
static inline int
HYPERVISOR_event_channel_op(
void *op)
{
return _hypercall1(int, event_channel_op, op);
}
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(
void *physdev_op)
{
return _hypercall1(int, physdev_op, physdev_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, pte_t new_val, unsigned long flags, domid_t domid)
{
unsigned long pte_hi = 0;
#ifdef CONFIG_X86_PAE
pte_hi = new_val.pte_high;
#endif
return _hypercall5(int, update_va_mapping_otherdomain, va,
new_val.pte_low, pte_hi, 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_suspend(
unsigned long srec)
{
return _hypercall3(int, sched_op, SCHEDOP_shutdown,
SHUTDOWN_suspend, srec);
}
#endif /* __HYPERCALL_H__ */
#elif defined(__x86_64__)
#define __syscall_clobber "r11","rcx","memory"
/*
* 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" ((unsigned long)__HYPERVISOR_set_trap_table), "D" (table)
: __syscall_clobber );
return ret;
}
static inline int
HYPERVISOR_mmu_update(
mmu_update_t *req, int count, int *success_count, domid_t domid)
{
int ret;
__asm__ __volatile__ (
"movq %5, %%r10;" TRAP_INSTR
: "=a" (ret)
: "0" ((unsigned long)__HYPERVISOR_mmu_update), "D" (req), "S" ((long)count),
"d" (success_count), "g" ((unsigned long)domid)
: __syscall_clobber, "r10" );
return ret;
}
static inline int
HYPERVISOR_mmuext_op(
struct mmuext_op *op, int count, int *success_count, domid_t domid)
{
int ret;
__asm__ __volatile__ (
"movq %5, %%r10;" TRAP_INSTR
: "=a" (ret)
: "0" (__HYPERVISOR_mmuext_op), "D" (op), "S" ((long)count),
"d" (success_count), "g" ((unsigned long)domid)
: __syscall_clobber, "r10" );
return ret;
}
static inline int
HYPERVISOR_set_gdt(
unsigned long *frame_list, int entries)
{
int ret;
__asm__ __volatile__ (
TRAP_INSTR
: "=a" (ret)
: "0" ((unsigned long)__HYPERVISOR_set_gdt), "D" (frame_list), "S" ((long)entries)
: __syscall_clobber );
return ret;
}
static inline int
HYPERVISOR_stack_switch(
unsigned long ss, unsigned long esp)
{
int ret;
__asm__ __volatile__ (
TRAP_INSTR
: "=a" (ret)
: "0" ((unsigned long)__HYPERVISOR_stack_switch), "D" (ss), "S" (esp)
: __syscall_clobber );
return ret;
}
static inline int
HYPERVISOR_set_callbacks(
unsigned long event_address, unsigned long failsafe_address,
unsigned long syscall_address)
{
int ret;
__asm__ __volatile__ (
TRAP_INSTR
: "=a" (ret)
: "0" ((unsigned long)__HYPERVISOR_set_callbacks), "D" (event_address),
"S" (failsafe_address), "d" (syscall_address)
: __syscall_clobber );
return ret;
}
static inline int
HYPERVISOR_fpu_taskswitch(
int set)
{
int ret;
__asm__ __volatile__ (
TRAP_INSTR
: "=a" (ret) : "0" ((unsigned long)__HYPERVISOR_fpu_taskswitch),
"D" ((unsigned long) set) : __syscall_clobber );
return ret;
}
static inline int
HYPERVISOR_yield(
void)
{
int ret;
__asm__ __volatile__ (
TRAP_INSTR
: "=a" (ret)
: "0" ((unsigned long)__HYPERVISOR_sched_op), "D" ((unsigned long)SCHEDOP_yield)
: __syscall_clobber );
return ret;
}
static inline int
HYPERVISOR_block(
void)
{
int ret;
__asm__ __volatile__ (
TRAP_INSTR
: "=a" (ret)
: "0" ((unsigned long)__HYPERVISOR_sched_op), "D" ((unsigned long)SCHEDOP_block)
: __syscall_clobber );
return ret;
}
static inline int
HYPERVISOR_shutdown(
void)
{
int ret;
__asm__ __volatile__ (
TRAP_INSTR
: "=a" (ret)
: "0" ((unsigned long)__HYPERVISOR_sched_op),
"D" ((unsigned long)(SCHEDOP_shutdown | (SHUTDOWN_poweroff << SCHEDOP_reasonshift)))
: __syscall_clobber );
return ret;
}
static inline int
HYPERVISOR_reboot(
void)
{
int ret;
__asm__ __volatile__ (
TRAP_INSTR
: "=a" (ret)
: "0" ((unsigned long)__HYPERVISOR_sched_op),
"D" ((unsigned long)(SCHEDOP_shutdown | (SHUTDOWN_reboot << SCHEDOP_reasonshift)))
: __syscall_clobber );
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" ((unsigned long)__HYPERVISOR_sched_op),
"D" ((unsigned long)(SCHEDOP_shutdown | (SHUTDOWN_suspend << SCHEDOP_reasonshift))),
"S" (srec)
: __syscall_clobber );
return ret;
}
/*
* We can have the timeout value in a single argument for the hypercall, but
* that will break the common code.
*/
static inline long
HYPERVISOR_set_timer_op(
u64 timeout)
{
int ret;
__asm__ __volatile__ (
TRAP_INSTR
: "=a" (ret)
: "0" ((unsigned long)__HYPERVISOR_set_timer_op),
"D" (timeout)
: __syscall_clobber );
return ret;
}
#endif
#endif /* __HYPERVISOR_H__ */
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