406 lines
12 KiB
C
406 lines
12 KiB
C
/******************************************************************************
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* hypercall.h
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*
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* Linux-specific hypervisor handling.
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*
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* Copyright (c) 2002-2004, K A Fraser
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*
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* This file may be distributed separately from the Linux kernel, or
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* incorporated into other software packages, subject to the following license:
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this source file (the "Software"), to deal in the Software without
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* restriction, including without limitation the rights to use, copy, modify,
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* merge, publish, distribute, sublicense, and/or sell copies of the Software,
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* and to permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* IN THE SOFTWARE.
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*/
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#ifndef __HYPERCALL_H__
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#define __HYPERCALL_H__
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#include <sys/systm.h>
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#include <xen/interface/xen.h>
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#include <xen/interface/sched.h>
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#define __STR(x) #x
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#define STR(x) __STR(x)
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#define ENOXENSYS 38
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#define CONFIG_XEN_COMPAT 0x030002
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#if defined(XEN)
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#define HYPERCALL_STR(name) \
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"call hypercall_page + ("STR(__HYPERVISOR_##name)" * 32)"
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#else
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#define HYPERCALL_STR(name) \
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"mov hypercall_stubs,%%eax; " \
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"add $("STR(__HYPERVISOR_##name)" * 32),%%eax; " \
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"call *%%eax"
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#endif
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#define _hypercall0(type, name) \
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({ \
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long __res; \
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__asm__ volatile ( \
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HYPERCALL_STR(name) \
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: "=a" (__res) \
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: \
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: "memory" ); \
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(type)__res; \
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})
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#define _hypercall1(type, name, a1) \
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({ \
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long __res, __ign1; \
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__asm__ volatile ( \
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HYPERCALL_STR(name) \
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: "=a" (__res), "=b" (__ign1) \
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: "1" ((long)(a1)) \
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: "memory" ); \
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(type)__res; \
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})
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#define _hypercall2(type, name, a1, a2) \
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({ \
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long __res, __ign1, __ign2; \
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__asm__ volatile ( \
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HYPERCALL_STR(name) \
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: "=a" (__res), "=b" (__ign1), "=c" (__ign2) \
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: "1" ((long)(a1)), "2" ((long)(a2)) \
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: "memory" ); \
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(type)__res; \
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})
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#define _hypercall3(type, name, a1, a2, a3) \
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({ \
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long __res, __ign1, __ign2, __ign3; \
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__asm__ volatile ( \
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HYPERCALL_STR(name) \
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: "=a" (__res), "=b" (__ign1), "=c" (__ign2), \
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"=d" (__ign3) \
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: "1" ((long)(a1)), "2" ((long)(a2)), \
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"3" ((long)(a3)) \
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: "memory" ); \
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(type)__res; \
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})
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#define _hypercall4(type, name, a1, a2, a3, a4) \
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({ \
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long __res, __ign1, __ign2, __ign3, __ign4; \
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__asm__ volatile ( \
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HYPERCALL_STR(name) \
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: "=a" (__res), "=b" (__ign1), "=c" (__ign2), \
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"=d" (__ign3), "=S" (__ign4) \
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: "1" ((long)(a1)), "2" ((long)(a2)), \
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"3" ((long)(a3)), "4" ((long)(a4)) \
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: "memory" ); \
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(type)__res; \
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})
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#define _hypercall5(type, name, a1, a2, a3, a4, a5) \
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({ \
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long __res, __ign1, __ign2, __ign3, __ign4, __ign5; \
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__asm__ volatile ( \
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HYPERCALL_STR(name) \
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: "=a" (__res), "=b" (__ign1), "=c" (__ign2), \
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"=d" (__ign3), "=S" (__ign4), "=D" (__ign5) \
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: "1" ((long)(a1)), "2" ((long)(a2)), \
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"3" ((long)(a3)), "4" ((long)(a4)), \
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"5" ((long)(a5)) \
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: "memory" ); \
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(type)__res; \
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})
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static inline int
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HYPERVISOR_set_trap_table(
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trap_info_t *table)
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{
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return _hypercall1(int, set_trap_table, table);
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}
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static inline int
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HYPERVISOR_mmu_update(
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mmu_update_t *req, int count, int *success_count, domid_t domid)
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{
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return _hypercall4(int, mmu_update, req, count, success_count, domid);
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}
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static inline int
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HYPERVISOR_mmuext_op(
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mmuext_op_t *op, int count, int *success_count, domid_t domid)
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{
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return _hypercall4(int, mmuext_op, op, count, success_count, domid);
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}
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static inline int
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HYPERVISOR_set_gdt(
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unsigned long *frame_list, int entries)
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{
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return _hypercall2(int, set_gdt, frame_list, entries);
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}
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static inline int
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HYPERVISOR_stack_switch(
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unsigned long ss, unsigned long esp)
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{
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return _hypercall2(int, stack_switch, ss, esp);
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}
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static inline int
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HYPERVISOR_set_callbacks(
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unsigned long event_selector, unsigned long event_address,
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unsigned long failsafe_selector, unsigned long failsafe_address)
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{
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return _hypercall4(int, set_callbacks,
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event_selector, event_address,
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failsafe_selector, failsafe_address);
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}
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static inline int
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HYPERVISOR_fpu_taskswitch(
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int set)
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{
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return _hypercall1(int, fpu_taskswitch, set);
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}
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static inline int
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HYPERVISOR_sched_op_compat(
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int cmd, unsigned long arg)
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{
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return _hypercall2(int, sched_op_compat, cmd, arg);
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}
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static inline int
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HYPERVISOR_sched_op(
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int cmd, void *arg)
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{
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return _hypercall2(int, sched_op, cmd, arg);
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}
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static inline long
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HYPERVISOR_set_timer_op(
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uint64_t timeout)
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{
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unsigned long timeout_hi = (unsigned long)(timeout>>32);
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unsigned long timeout_lo = (unsigned long)timeout;
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return _hypercall2(long, set_timer_op, timeout_lo, timeout_hi);
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}
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#if 0
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static inline int
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HYPERVISOR_platform_op(
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struct xen_platform_op *platform_op)
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{
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platform_op->interface_version = XENPF_INTERFACE_VERSION;
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return _hypercall1(int, platform_op, platform_op);
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}
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#endif
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static inline int
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HYPERVISOR_set_debugreg(
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int reg, unsigned long value)
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{
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return _hypercall2(int, set_debugreg, reg, value);
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}
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static inline unsigned long
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HYPERVISOR_get_debugreg(
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int reg)
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{
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return _hypercall1(unsigned long, get_debugreg, reg);
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}
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static inline int
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HYPERVISOR_update_descriptor(
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uint64_t ma, uint64_t desc)
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{
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return _hypercall4(int, update_descriptor, ma, ma>>32, desc, desc>>32);
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}
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static inline int
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HYPERVISOR_memory_op(
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unsigned int cmd, void *arg)
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{
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return _hypercall2(int, memory_op, cmd, arg);
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}
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static inline int
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HYPERVISOR_multicall(
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void *call_list, int nr_calls)
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{
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return _hypercall2(int, multicall, call_list, nr_calls);
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}
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static inline int
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HYPERVISOR_update_va_mapping(
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unsigned long va, uint64_t new_val, unsigned long flags)
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{
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uint32_t hi, lo;
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lo = (uint32_t)(new_val & 0xffffffff);
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hi = (uint32_t)(new_val >> 32);
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return _hypercall4(int, update_va_mapping, va,
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lo, hi, flags);
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}
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static inline int
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HYPERVISOR_event_channel_op(
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int cmd, void *arg)
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{
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int rc = _hypercall2(int, event_channel_op, cmd, arg);
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#if CONFIG_XEN_COMPAT <= 0x030002
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if (__predict_false(rc == -ENOXENSYS)) {
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struct evtchn_op op;
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op.cmd = cmd;
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memcpy(&op.u, arg, sizeof(op.u));
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rc = _hypercall1(int, event_channel_op_compat, &op);
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memcpy(arg, &op.u, sizeof(op.u));
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}
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#endif
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return (rc);
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}
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static inline int
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HYPERVISOR_xen_version(
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int cmd, void *arg)
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{
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return _hypercall2(int, xen_version, cmd, arg);
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}
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static inline int
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HYPERVISOR_console_io(
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int cmd, int count, char *str)
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{
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return _hypercall3(int, console_io, cmd, count, str);
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}
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static inline int
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HYPERVISOR_physdev_op(
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int cmd, void *arg)
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{
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int rc = _hypercall2(int, physdev_op, cmd, arg);
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#if CONFIG_XEN_COMPAT <= 0x030002
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if (__predict_false(rc == -ENOXENSYS)) {
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struct physdev_op op;
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op.cmd = cmd;
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memcpy(&op.u, arg, sizeof(op.u));
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rc = _hypercall1(int, physdev_op_compat, &op);
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memcpy(arg, &op.u, sizeof(op.u));
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}
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#endif
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return (rc);
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}
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static inline int
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HYPERVISOR_grant_table_op(
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unsigned int cmd, void *uop, unsigned int count)
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{
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return _hypercall3(int, grant_table_op, cmd, uop, count);
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}
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static inline int
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HYPERVISOR_update_va_mapping_otherdomain(
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unsigned long va, uint64_t new_val, unsigned long flags, domid_t domid)
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{
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uint32_t hi, lo;
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lo = (uint32_t)(new_val & 0xffffffff);
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hi = (uint32_t)(new_val >> 32);
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return _hypercall5(int, update_va_mapping_otherdomain, va,
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lo, hi, flags, domid);
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}
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static inline int
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HYPERVISOR_vm_assist(
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unsigned int cmd, unsigned int type)
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{
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return _hypercall2(int, vm_assist, cmd, type);
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}
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static inline int
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HYPERVISOR_vcpu_op(
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int cmd, int vcpuid, void *extra_args)
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{
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return _hypercall3(int, vcpu_op, cmd, vcpuid, extra_args);
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}
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static inline int
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HYPERVISOR_suspend(
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unsigned long srec)
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{
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struct sched_shutdown sched_shutdown = {
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.reason = SHUTDOWN_suspend
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};
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int rc = _hypercall3(int, sched_op, SCHEDOP_shutdown,
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&sched_shutdown, srec);
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#if CONFIG_XEN_COMPAT <= 0x030002
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if (rc == -ENOXENSYS)
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rc = _hypercall3(int, sched_op_compat, SCHEDOP_shutdown,
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SHUTDOWN_suspend, srec);
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#endif
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return (rc);
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}
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#if CONFIG_XEN_COMPAT <= 0x030002
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static inline int
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HYPERVISOR_nmi_op(
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unsigned long op, void *arg)
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{
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return _hypercall2(int, nmi_op, op, arg);
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}
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#endif
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static inline int
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HYPERVISOR_callback_op(
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int cmd, void *arg)
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{
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return _hypercall2(int, callback_op, cmd, arg);
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}
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#ifndef CONFIG_XEN
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static inline unsigned long
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HYPERVISOR_hvm_op(
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int op, void *arg)
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{
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return _hypercall2(unsigned long, hvm_op, op, arg);
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}
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#endif
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static inline int
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HYPERVISOR_xenoprof_op(
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int op, void *arg)
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{
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return _hypercall2(int, xenoprof_op, op, arg);
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}
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static inline int
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HYPERVISOR_kexec_op(
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unsigned long op, void *args)
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{
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return _hypercall2(int, kexec_op, op, args);
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}
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#endif /* __HYPERCALL_H__ */
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/*
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* Local variables:
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* c-file-style: "linux"
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* indent-tabs-mode: t
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* c-indent-level: 8
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* c-basic-offset: 8
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* tab-width: 8
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* End:
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*/
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