396 lines
10 KiB
C
396 lines
10 KiB
C
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/******************************************************************************
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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 program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License version 2
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* as published by the Free Software Foundation; or, when distributed
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* separately from the Linux kernel or incorporated into other
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* 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 <linux/errno.h>
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#include <linux/string.h>
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#include <xen/interface/xen.h>
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#include <xen/interface/sched.h>
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#include <xen/interface/physdev.h>
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extern struct { char _entry[32]; } hypercall_page[];
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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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"call %[call]" \
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: "=a" (__res) \
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: [call] "m" (hypercall_page[__HYPERVISOR_##name]) \
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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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"call %[call]" \
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: "=a" (__res), "=b" (__ign1) \
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: "1" ((long)(a1)), \
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[call] "m" (hypercall_page[__HYPERVISOR_##name]) \
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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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"call %[call]" \
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: "=a" (__res), "=b" (__ign1), "=c" (__ign2) \
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: "1" ((long)(a1)), "2" ((long)(a2)), \
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[call] "m" (hypercall_page[__HYPERVISOR_##name]) \
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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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"call %[call]" \
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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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[call] "m" (hypercall_page[__HYPERVISOR_##name]) \
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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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"call %[call]" \
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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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[call] "m" (hypercall_page[__HYPERVISOR_##name]) \
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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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"call %[call]" \
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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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[call] "m" (hypercall_page[__HYPERVISOR_##name]) \
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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(struct trap_info *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(struct mmu_update *req, int count,
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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(struct mmuext_op *op, int count,
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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(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(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(unsigned long event_selector,
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unsigned long event_address,
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unsigned long failsafe_selector,
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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(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(int cmd, unsigned long 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(u64 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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static inline int
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HYPERVISOR_set_debugreg(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(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(u64 ma, u64 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(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(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(unsigned long va, pte_t new_val,
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unsigned long flags)
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{
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unsigned long pte_hi = 0;
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#ifdef CONFIG_X86_PAE
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pte_hi = new_val.pte_high;
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#endif
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return _hypercall4(int, update_va_mapping, va,
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new_val.pte_low, pte_hi, flags);
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}
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static inline int
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HYPERVISOR_event_channel_op(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 (unlikely(rc == -ENOSYS)) {
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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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return rc;
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}
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static inline int
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HYPERVISOR_xen_version(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(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(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 (unlikely(rc == -ENOSYS)) {
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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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return rc;
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}
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static inline int
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HYPERVISOR_grant_table_op(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(unsigned long va, pte_t new_val,
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unsigned long flags, domid_t domid)
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{
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unsigned long pte_hi = 0;
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#ifdef CONFIG_X86_PAE
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pte_hi = new_val.pte_high;
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#endif
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return _hypercall5(int, update_va_mapping_otherdomain, va,
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new_val.pte_low, pte_hi, flags, domid);
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}
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static inline int
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HYPERVISOR_vm_assist(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(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(unsigned long srec)
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{
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return _hypercall3(int, sched_op, SCHEDOP_shutdown,
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SHUTDOWN_suspend, srec);
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}
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static inline int
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HYPERVISOR_nmi_op(unsigned long op, unsigned long arg)
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{
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return _hypercall2(int, nmi_op, op, arg);
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}
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static inline void
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MULTI_update_va_mapping(struct multicall_entry *mcl, unsigned long va,
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pte_t new_val, unsigned long flags)
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{
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mcl->op = __HYPERVISOR_update_va_mapping;
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mcl->args[0] = va;
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#ifdef CONFIG_X86_PAE
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mcl->args[1] = new_val.pte_low;
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mcl->args[2] = new_val.pte_high;
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#else
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mcl->args[1] = new_val.pte_low;
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mcl->args[2] = 0;
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#endif
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mcl->args[3] = flags;
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}
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static inline void
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MULTI_grant_table_op(struct multicall_entry *mcl, unsigned int cmd,
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void *uop, unsigned int count)
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{
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mcl->op = __HYPERVISOR_grant_table_op;
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mcl->args[0] = cmd;
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mcl->args[1] = (unsigned long)uop;
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mcl->args[2] = count;
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}
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static inline void
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MULTI_update_va_mapping_otherdomain(struct multicall_entry *mcl, unsigned long va,
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pte_t new_val, unsigned long flags,
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domid_t domid)
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{
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mcl->op = __HYPERVISOR_update_va_mapping_otherdomain;
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mcl->args[0] = va;
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#ifdef CONFIG_X86_PAE
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mcl->args[1] = new_val.pte_low;
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mcl->args[2] = new_val.pte_high;
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#else
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mcl->args[1] = new_val.pte_low;
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mcl->args[2] = 0;
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#endif
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mcl->args[3] = flags;
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mcl->args[4] = domid;
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}
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static inline void
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MULTI_update_descriptor(struct multicall_entry *mcl, u64 maddr,
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struct desc_struct desc)
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{
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mcl->op = __HYPERVISOR_update_descriptor;
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mcl->args[0] = maddr;
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mcl->args[1] = maddr >> 32;
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mcl->args[2] = desc.a;
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mcl->args[3] = desc.b;
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}
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||
|
|
|
||
|
|
static inline void
|
||
|
|
MULTI_memory_op(struct multicall_entry *mcl, unsigned int cmd, void *arg)
|
||
|
|
{
|
||
|
|
mcl->op = __HYPERVISOR_memory_op;
|
||
|
|
mcl->args[0] = cmd;
|
||
|
|
mcl->args[1] = (unsigned long)arg;
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline void
|
||
|
|
MULTI_mmu_update(struct multicall_entry *mcl, struct mmu_update *req,
|
||
|
|
int count, int *success_count, domid_t domid)
|
||
|
|
{
|
||
|
|
mcl->op = __HYPERVISOR_mmu_update;
|
||
|
|
mcl->args[0] = (unsigned long)req;
|
||
|
|
mcl->args[1] = count;
|
||
|
|
mcl->args[2] = (unsigned long)success_count;
|
||
|
|
mcl->args[3] = domid;
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline void
|
||
|
|
MULTI_mmuext_op(struct multicall_entry *mcl, struct mmuext_op *op, int count,
|
||
|
|
int *success_count, domid_t domid)
|
||
|
|
{
|
||
|
|
mcl->op = __HYPERVISOR_mmuext_op;
|
||
|
|
mcl->args[0] = (unsigned long)op;
|
||
|
|
mcl->args[1] = count;
|
||
|
|
mcl->args[2] = (unsigned long)success_count;
|
||
|
|
mcl->args[3] = domid;
|
||
|
|
}
|
||
|
|
#endif /* __HYPERCALL_H__ */
|