arch/x86/include/asm/xen/hypervisor.h

   1 /******************************************************************************
   2  * hypervisor.h
   3  *
   4  * Linux-specific hypervisor handling.
   5  *
   6  * Copyright (c) 2002-2004, K A Fraser
   7  *
   8  * This program is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU General Public License version 2
  10  * as published by the Free Software Foundation; or, when distributed
  11  * separately from the Linux kernel or incorporated into other
  12  * software packages, subject to the following license:
  13  *
  14  * Permission is hereby granted, free of charge, to any person obtaining a copy
  15  * of this source file (the "Software"), to deal in the Software without
  16  * restriction, including without limitation the rights to use, copy, modify,
  17  * merge, publish, distribute, sublicense, and/or sell copies of the Software,
  18  * and to permit persons to whom the Software is furnished to do so, subject to
  19  * the following conditions:
  20  *
  21  * The above copyright notice and this permission notice shall be included in
  22  * all copies or substantial portions of the Software.
  23  *
  24  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  25  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  26  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  27  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  28  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  29  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  30  * IN THE SOFTWARE.
  31  */
  32
  33 #ifndef _ASM_X86_XEN__HYPERVISOR_H
  34 #define _ASM_X86_XEN__HYPERVISOR_H
  35
  36 #include <linux/types.h>
  37 #include <linux/kernel.h>
  38
  39 #include <xen/interface/xen.h>
  40 #include <xen/interface/version.h>
  41
  42 #include <asm/ptrace.h>
  43 #include <asm/page.h>
  44 #include <asm/desc.h>
  45 #if defined(__i386__)
  46 #  ifdef CONFIG_X86_PAE
  47 #   include <asm-generic/pgtable-nopud.h>
  48 #  else
  49 #   include <asm-generic/pgtable-nopmd.h>
  50 #  endif
  51 #endif
  52 #include <asm/xen/hypercall.h>
  53
  54 /* arch/i386/kernel/setup.c */
  55 extern struct shared_info *HYPERVISOR_shared_info;
  56 extern struct start_info *xen_start_info;
  57
  58 /* arch/i386/mach-xen/evtchn.c */
  59 /* Force a proper event-channel callback from Xen. */
  60 extern void force_evtchn_callback(void);
  61
  62 /* Turn jiffies into Xen system time. */
  63 u64 jiffies_to_st(unsigned long jiffies);
  64
  65
  66 #define MULTI_UVMFLAGS_INDEX 3
  67 #define MULTI_UVMDOMID_INDEX 4
  68
  69 enum xen_domain_type {
  70         XEN_NATIVE,
  71         XEN_PV_DOMAIN,
  72         XEN_HVM_DOMAIN,
  73 };
  74
  75 extern enum xen_domain_type xen_domain_type;
  76
  77 #define xen_domain()            (xen_domain_type != XEN_NATIVE)
  78 #define xen_pv_domain()         (xen_domain_type == XEN_PV_DOMAIN)
  79 #define xen_initial_domain()    (xen_pv_domain() && xen_start_info->flags & SIF_INITDOMAIN)
  80 #define xen_hvm_domain()        (xen_domain_type == XEN_HVM_DOMAIN)
  81
  82 #endif /* _ASM_X86_XEN__HYPERVISOR_H */